US20100047736A1 - Handpiece for Detection of Dental Demineralization - Google Patents
Handpiece for Detection of Dental Demineralization Download PDFInfo
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- US20100047736A1 US20100047736A1 US12/607,167 US60716709A US2010047736A1 US 20100047736 A1 US20100047736 A1 US 20100047736A1 US 60716709 A US60716709 A US 60716709A US 2010047736 A1 US2010047736 A1 US 2010047736A1
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- endcap
- implement
- gas
- dentition
- housing
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- 0 C*C(*)C(*=C)*=**C1*([C@](C)*=C(C)*N=C)=CC1 Chemical compound C*C(*)C(*=C)*=**C1*([C@](C)*=C(C)*N=C)=CC1 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/24—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the mouth, i.e. stomatoscopes, e.g. with tongue depressors; Instruments for opening or keeping open the mouth
- A61B1/247—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the mouth, i.e. stomatoscopes, e.g. with tongue depressors; Instruments for opening or keeping open the mouth with means for viewing areas outside the direct line of sight, e.g. dentists' mirrors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C19/00—Dental auxiliary appliances
- A61C19/04—Measuring instruments specially adapted for dentistry
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00002—Operational features of endoscopes
- A61B1/00039—Operational features of endoscopes provided with input arrangements for the user
- A61B1/0004—Operational features of endoscopes provided with input arrangements for the user for electronic operation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00108—Constructional details of the endoscope body characterised by self-sufficient functionality for stand-alone use
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/012—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor
- A61B1/015—Control of fluid supply or evacuation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
- A61B1/043—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances for fluorescence imaging
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
- A61B1/0661—Endoscope light sources
- A61B1/0684—Endoscope light sources using light emitting diodes [LED]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/24—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the mouth, i.e. stomatoscopes, e.g. with tongue depressors; Instruments for opening or keeping open the mouth
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
- A61B5/0082—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes
- A61B5/0088—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes for oral or dental tissue
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00002—Operational features of endoscopes
- A61B1/00011—Operational features of endoscopes characterised by signal transmission
- A61B1/00016—Operational features of endoscopes characterised by signal transmission using wireless means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
- A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
- A61B1/00096—Optical elements
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
- A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
- A61B1/00101—Insertion part of the endoscope body characterised by distal tip features the distal tip features being detachable
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/02—Rinsing or air-blowing devices, e.g. using fluid jets or comprising liquid medication
- A61C17/022—Air-blowing devices, e.g. with means for heating the air
Definitions
- the invention relates to dental devices and more particularly to devices for detection of tooth decay/dental demineralization.
- Dental caries is a chronic infectious disease and earlier detection would reduce the ravages of the disease.
- Current caries detection methods clinical exams, x-rays
- Since the loss of mineral (demineralization) from the enamel is a chronic process that occurs over a period of months to years, and since very small lesions (i.e., early detection) are completely reversible through the use of fluoride treatments and other preventive measures, the early detection of dental demineralization allows dental professionals to administer professional treatments to reverse the demineralization process rather than undertake more costly and less desirable restorative treatments.
- a handheld dental implement includes a housing defining an interior space; a power source; a light source electrically coupled to the power source; and a gas reservoir.
- a wireless handheld dental implement includes a housing defining an interior space; a power source; a light source electrically coupled to the power source; a reflective surface; and a gas conduit positioned to transmit gas into contact with the reflective surface.
- a handheld dental implement includes a power source; a light source electrically coupled to the power source; and a microphone.
- a dental investigation system includes a handpiece including a light source, a light detecting device, and a wireless communicator; and a receiver coupled to a processing unit configured to receive wireless transmissions from the handpiece.
- a dental investigation system includes a processing unit; a handpiece in communication with the processing unit; and a microphone in communication with the processing unit.
- a method of recording data regarding a dental subject includes the steps of receiving pictures of a dental subject; associating the pictures with the dental subject; receiving audio input, the audio input containing information related to the dental subject; and associating the audio input with the dental subject.
- a computer readable medium includes instructions thereon such that when interpreted by a processor cause the processor to perform the steps of receiving pictures of a dental subject; associating the pictures with the dental subject; receiving audio input, the audio input containing information related to the dental subject; and associating the audio input with the dental subject.
- FIG. 1 is a perspective, partially cut-away view of a handpiece for detection of dental demineralization
- FIG. 2 is a perspective view of a lightpipe of the handpiece of FIG. 1 ;
- FIG. 3 is a cross sectional view of a light source and the lightpipe of FIG. 1 in contact with a tooth of a patient;
- FIG. 4 is a side elevational view of a camera and the lightpipe of FIG. 1 in contact with a tooth of a patient;
- FIG. 5 is a perspective view of a prior art handpiece
- FIG. 6 is a perspective view of a second embodiment handpiece for detection of dental demineralization
- FIG. 7 is an exploded perspective view of the handpiece of FIG. 6 ;
- FIG. 8 is a rear elevational view of the handpiece of FIG. 6 ;
- FIG. 9 is a side, partially cut-away, view of the handpiece of FIG. 6 ;
- FIG. 10 is a perspective view of the handpiece of FIG. 6 in a cradle
- FIG. 11 is a diagrammatical view of a computer and receiver for use with the handpiece of FIG. 6 ;
- FIG. 12 is a perspective view of a third embodiment handpiece for detection of dental demineralization
- FIG. 13 is a side, partially cut-away, view of the handpiece of FIG. 12 ;
- FIG. 14 is an exploded perspective view of the handpiece of FIG. 12 .
- QLF quantitative light fluorescence
- Inspektor Inspektor Dental Care
- QLF allows earlier detection than a purely visual inspection and does not have the side effects associated with radiographic examinations.
- QLF provides an objective method of analysis of dental demineralization by permitting a dentist or other caregiver to quantify the size of lesions as well as monitor changes in the size of lesions over time.
- a more detailed description of QLF and a method for utilizing QLF is described in U.S. patent application Ser. No. 10/411,625 to Stookey et al. filed Apr. 10, 2003, the disclosure of which is incorporated herein by reference.
- green fluorescence is analyzed to determine demineralization and red fluorescence is analyzed to determine the presence of plaque.
- Handpiece 10 To gather data for processing in a QLF system, a handpiece 10 , shown in FIG. 1 , is utilized.
- Handpiece 10 includes a handle or shell 12 , a light pipe 14 attached to shell 12 , an optical train 15 to receive light from light pipe 14 , a camera 16 to detect light provided to optical train 15 , a light source 18 to provide light to light pipe 14 , and a conduit 20 extending through shell 12 .
- Shell 12 includes a left half shell 21 and a right half shell 23 that cooperate to house, at least partially, optical train 15 , camera 16 , light source 18 , and conduit 20 .
- Shell 12 furthermore couples to light pipe 14 as shown in FIG. 1 .
- Shell 12 includes inner cavities shaped to receive and hold camera 16 , light source 18 , inter-shell hose 40 , and light pipe 14 in specific orientations. Lip 30 of light pipe 14 is received in recess 32 of shell 12 . Likewise, light source 18 is positioned to allow light therefrom to be directed through light pipe 14 , off reflecting facet 34 , and out inspection surface 36 . Similarly, camera 16 is positioned such that light entering inspection surface 36 , reflecting off reflecting facet 34 , and traveling through light pipe 14 is received by camera 16 . Additionally, shell 12 provides for wires (fiber optic, electrical, or otherwise) to extend from a rear end 52 thereof. A fiber optic cable 46 extends to the external light source (not shown), an electrical cable 48 extends to a computer 1126 to store, process, and display the image received by camera 16 .
- wires fiber optic, electrical, or otherwise
- Light source 18 is preferably a fiber optic system that conveys illumination from a remote source but may also be a local source within shell 12 or any other source known in the art.
- the light may be optically filtered by the system either before or after exiting light source 18 . Such filtering excludes unwanted light and noise from the desired signal.
- light source 18 includes one or more light emitting diodes, laser diodes, or some combination thereof (locally or remotely).
- each of the light sources may be of a different wavelength and combined as desired.
- the wavelength of the light used may be tailored, lengthened or shortened, to the dental tissue being observed as well as to the desired light penetration and to the light collection instrumentation (camera 16 ) so as to provide the desired optical response.
- tissue is used herein to include all types of tissue found in the mouth, i.e. teeth, gums, tongue, cancerous cells.
- Optical train 15 includes a lens 50 and at least one filter. Embodiments are envisioned where lens 50 and the filter(s) may be combined into one structure or where no filter is present. Optical train 15 tailors the incoming information into a form that is best received by camera 16 and that best provides the data for processing. Such tailoring may include providing selective attenuation of the reflected or scattered input illumination, in addition to fluorescent emission data. While optical train 15 is described as having one lens 50 and filter, many lenses and filters may be included in optical train 15 to provide different fields of view and different magnifications.
- Camera 16 is part of a digital imaging system that collects high-resolution images and live video of dental tissue. Camera 16 then transmits the images, either through a wire as shown or wirelessly, to computer 1126 for storage and processing.
- handpiece 1010 is “wireless,” it should be appreciated that “wireless” is intended to refer to the lack of electrical or supply lines extending to or from handpiece 1010 that would tether handpiece 1010 to another object such as a computer 1126 or an air supply (not shown).
- One suitable model camera is the DXC-LS1/1 sold by Sony.
- camera 16 is a color camera that detects spectral responses of tissue to the provided illumination.
- camera 16 is a black and white sensing camera.
- a bandpass filter 17 as part of optical train 15 configured to filter out light of substantially the same wavelength as the illumination source 18 is used and black and white camera 16 is used to detect scattering intensity.
- a bandpass filter 17 configured to filter out light of substantially the same wavelength as the tissue fluorescence is used and black and white camera 16 detects the intensity of tissue fluorescence.
- Light pipe 14 is a translucent (transparent) monolithic polymer such as polystyrene, polycarbonate, acrylic, or glass piece that attaches to an end of the shell 12 .
- Translucent as used herein is meant to describe any material that is not opaque, thus meaning anything that transmits light while causing light diffusion as well as anything that is transparent (transmitting light without causing substantial light diffusion). While light pipe 14 is described and shown as being a solid piece, embodiments are envisioned having voids and gaps within light pipe 14 .
- Light pipe 14 is constructed from polycarbonate but may be constructed from any material that will allow light transmission of an adequate fidelity and acceptable, preferably low, signal loss.
- light pipe 14 includes a proximal attachment end 22 , a tapering body 24 , a distal end 26 , and a conduit support 28 .
- Proximal attachment end 22 includes a lip 30 of constant depth and width. Lip 30 is sized and shaped to be securely received in a recess 32 of shell 12 . Separating left half shell 21 from right half shell 23 allows removal of light pipe 14 . Coupling left half shell 21 to right half shell 23 secures light pipe 14 to shells 21 , 23 .
- shell 12 may be configured to have a pocket that slidably receives lip 30 therein and is secured by a latch so as to not require the detachment of left half shell 21 from right half shell 23 .
- Tapering body 24 includes conduit support 28 attached thereto which will be discussed in more detail below.
- Distal end 26 includes a reflecting facet 34 and an inspection surface 36 .
- Reflecting facet 34 is in internal surface of light pipe 14 . Reflecting facet 34 allows light entering from proximal attachment end 22 across a proximal light transfer plane 25 to reflect and exit through distal light transfer plane 27 of inspection surface 36 as shown in FIG. 3 .
- reflecting facet 34 allows light entering from distal light transfer plane 27 of inspection surface 36 to reflect and exit through proximal light transfer plane 25 of proximal attachment end 22 as shown in FIG. 4 .
- reflecting facet 34 is shaped even more specifically to direct light from inspection surface 36 to camera 16 .
- the reflective properties of reflecting facet 34 are provided by the difference in refractive index between the material of light pipe 14 and the air surrounding light pipe 14 . Thus, it is not necessary to attach a reflective surface to light pipe 14 to achieve the reflecting properties of reflecting facet 34 . However, embodiments are envisioned where an external member is attached to light pipe 14 to provide reflective properties.
- Reflecting facet 34 is preferably at a 45-degree angle relative to inspection surface 36 and proximal attachment end 22 .
- the 45-degree angle allows true image transmission and refraction between inspection surface 36 and proximal attachment end 22 .
- reflecting facet 34 is not at a 45-degree angle, and various lenses, optical filters, and/or optical processors, either integral or external to light pipe 14 , are utilized to construct a true image.
- Tapering body 24 and distal end 26 are sized and shaped to be received in the mouth of a patient and to access posterior molars which, as a function of being farthest from the mouth opening, are typically the most difficult to access. Additionally, the size and shape of tapering body 24 allows the device to be used on smaller patients where oral space is more limited. Furthermore, light pipe 14 is lightweight, and as such provides increased maneuverability and less user fatigue.
- Conduit 20 is provided to selectively deliver air to tooth 54 to dehydrate suspected lesions.
- conduit 20 may delivery any number of fluids to a position proximate distal end 26 of light pipe 14 such as a fluoride containing solution, other reparative fluids, a contrast agent, or a biomarker.
- Conduit 20 extends within shell 12 and below tapering body 24 .
- conduit 20 includes a connector 38 , an inter-shell hose 40 , and an extra-shell channel 42 .
- Connector 38 allows an external supply hose (not shown) to supply air, water, or another fluid to be attached to inter-shell hose 40 .
- Inter-shell hose 40 is coupled to extra-shell channel 42 via shell 12 to allow matter from inter-shell hose 40 to pass into extra-shell channel 42 and out a distal end 44 of extra-shell channel 42 .
- Extra-shell channel 42 is a metal channel that couples to conduit support 28 of light pipe 14 for support. Distal end 44 of extra-shell channel 42 is positioned such that any matter exiting therefrom will be proximate inspection surface 36 . Such local delivery assists a caregiver in determining the activity status of a detected lesion.
- a supply tube of air (not pictured) is attached to connector 38 and air is selectively pumped therethrough.
- Connector 38 is coupled to inter-shell hose 40 which is coupled to extra-shell channel 42 to allow localized delivery of the desired material.
- extra-shell channel 42 is shown as a tube that removably couples to an underside of light pipe 14 , other embodiments include extra shell channel 42 defined within light pipe 14 .
- the shape and makeup of light pipe 14 are designed to create a focal plane 56 for camera 16 at or proximate to inspection surface 36 .
- inspection surface 36 is placed within a patient's mouth to abutt a selected tooth 54 .
- Abutting selected tooth 54 combined with the location of focal plane 56 of camera 16 allows for a caregiver to easily find a location for handpiece 10 resulting in a clear picture.
- Focal plane 56 is configured to be at a distance that is the sum of the horizontal and vertical distances shown by dotted line in FIG. 4 .
- Abutting inspection surface 36 with tooth 54 results in reproducibility of the desired picture from one inspection to the next by removing possible fluctuation of the distance between inspection surface 36 and tooth 54 between successive inspections and by reducing fluctuations from unsteadiness of an operator's hand.
- inspection surface 36 abutting tooth 54 increases the likelihood that only light provided by light source 18 is exciting the observed dental tissue and that the fluorescence observed by camera 16 is a result of the provided illumination rather than from ambient light. Inspection surface 36 abutting tooth 54 covers the portion of tooth 54 to be examined by the caregiver, thus light pipe 14 simultaneously provides desired illumination while not providing space between tooth 54 and handpiece 10 that would allow undesired tooth illumination.
- acrylic light pipe 14 or any plastic equivalent created by injection molding or otherwise, is relatively inexpensive to manufacture and thus may be used in a disposable fashion. Such disposable use results in increased hygiene practices for a dental practitioner.
- Non-disposable dental implements are typically subjected to a sterilization process, such as autoclaving, between patients. This sterilization is costly and can cause deterioration of the material being sterilized. Deterioration of a light pathway such as a lens, a mirror/reflecting surface, or a translucent material can adversely effect the pictures gathered from such equipment. Accordingly, the disposable nature of light pipe 14 results in increased image fidelity and increased hygiene for the patient. However, embodiments are also envisioned that incorporate a reusable light pipe 14 .
- Handpiece 1010 includes many similar pieces to those shown in handpiece 10 .
- Handpiece 1010 includes shell 1012 , and end cap 1014 selectively attached to shell 1012 .
- Shell 1012 houses lens 1013 , prism 1015 , camera 1016 , filter 1017 , LED's 1018 , air outlet conduit 1020 , air valve 1060 coupled to air outlet conduit 1020 , air outlet valve button 1062 , air supply valve 1064 , air canister 1066 , battery 1068 , electronics 1070 , and on/capture button 1072 .
- End cap 1014 includes left end cap housing 1080 , right end cap housing 1082 , and mirror 1084 .
- Shell 1012 is composed from plastic, includes right shell housing 1086 , and left shell housing 1088 .
- Right and left shell housings 1086 , 1088 each include button hole 1090 and power lead hole 1092 .
- right and left shell housings 1086 , 1088 form a closed proximal end 1094 and an open distal end 1096 .
- Open distal end 1096 includes an exterior groove therein that cooperates with an inner surface (not shown) of end cap 1014 to provide a keyed interlock therebetween.
- Each button hole 1090 is sized shaped, and located to receive and allow external exposure of one of capture button 1072 and air outlet valve button 1062 .
- Each power lead hole 1092 is sized, shaped, and located to receive and allow external exposure of electrical leads 1098 of battery 1068 .
- Lens 1013 , prism 1015 , and filter 1017 function similarly to optical train 15 to condition light to be received by camera 1016 .
- LED's 1018 emit light that reflects off mirror 1084 and illuminates tooth 54 . In the current embodiment, LED's 1018 emit light having a wavelength of 405 nm.
- Air canister 1066 includes outlet hub 1100 that couples to hub 1102 of air supply valve 1064 .
- Air supply valve 1064 further includes air inlet 1104 and air output 1106 coupled to air valve 1060 .
- Air valve 1060 is operated via air outlet valve button 1062 . Depression of air outlet valve button 1062 opens air valve 1060 and allows fluid communication between air canister 1066 and air outlet conduit 1020 .
- Air outlet conduit 1020 fluidly couples to cap conduit 1108 when end cap 1014 is coupled to shell 1012 .
- Air inlet 1104 is configured to receive an air supply hose (not shown) therein to provide an air charge to air canister 1066 . Accordingly, air canister 1066 may be recharged as desired.
- air canister 1066 provides pressurized air in air supply valve 1064 and air valve 1060 .
- depression of air outlet valve button 1062 allows the pressurized air to escape via air outlet conduit 1020 and cap conduit 1108 .
- Valve 1060 may be electrically or mechanically operated and air outlet valve button 1062 may be an electrical or mechanical button. Depression of air outlet valve button 1062 allows valve 1060 to open for a pre-determined length of time. Alternatively, valve 1060 is opened as long as air outlet valve button 1062 is depressed.
- Camera 1016 is coupled to and controlled by electronics 1070 and powered by battery 1068 .
- Capture button 1072 provides an input to electronics 1070 to operate camera 1016 .
- Electronics 1070 include antenna 1071 that allows wireless transmission of images from camera 1016 .
- Antenna 1071 may be embedded in electronics 1070 or physically separate therefrom.
- battery 1068 includes exposed electrical leads 1098 that allow battery 1068 to be re-charged.
- One embodiment includes microphone 1099 coupled to electronics 1070 . Operation of microphone 1099 is discussed in more detail below. Embodiments are also envisioned where microphone 1099 is located outside of handpiece 1010 . Such embodiments include having microphone 1099 positioned generally within the room of an examination and electronically coupled, wired or wirelessly, to computer 1126 .
- End cap 1014 selectively attaches to shell 1012 and includes excitation/air window 1110 and cap conduit 1108 .
- End cap 1014 is designed to be disposable such that many disposable end caps 1014 would be used with each shell 1012 and its contents over the lifetime of handpiece 1010 .
- Mirror 1084 is oriented at a 45 degree angle relative to LED's 1018 , filter 1017 , and near surface 1112 of camera 1016 to direct light from tooth 54 to camera 1016 and from LED's 1018 to tooth 54 .
- Cap conduit 1108 is located such that air exiting therefrom creates a current along mirror 1084 and tooth 54 .
- FIG. 11 shows handpiece 1010 in a cradle 1114 .
- Cradle 1114 includes housing 1116 , power cord 1118 , and internal electrical contacts (not shown).
- Housing 1116 includes bay 1122 that is sized to at least partially receive closed proximal end 1094 therein.
- Power cord 1118 is electrically coupled to the internal electrical contacts, potentially via a transformer (not shown).
- the internal electrical contacts are located within bay 1122 such that the internal electrical contacts abut electrical leads 1098 when handpiece 1010 is placed within cradle 1114 .
- Bay 1122 may include a longitudinal keyway (not shown) therein that receives a key (not shown) disposed along or on shell 1012 of handpiece 1010 to align electrical leads 1098 with the internal electrical contacts.
- Cradle 1114 may also include a lever system (not shown) coupled to an air supply (not shown) such that placement of handpiece 1010 within cradle 1114 causes automatic charging of air canister 1066 .
- air canister 1066 may be charged in cradle 1114 in a non-automatic manner or by manual connection of an air source (not shown) to air inlet 1104 when handpiece 1010 is out of cradle 1114 .
- FIG. 11 shows wireless receiver 1124 .
- Wireless receiver 1124 couples to a computer 1126 , via a wired connection, to allow wireless communication between computer 1126 and handpiece 1010 .
- the wireless communication may include a video signal or still pictures from camera 1016 and audio signals from microphone 1099 .
- Blowing air on the surface of tooth 54 containing the suspected lesion allows dehydration of the lesion and results in a change in the fluorescence of tooth 54 when properly illuminated if the lesion is active.
- Non-active lesions and defects show little or no change in damage when dehydrated.
- a dental care provider selects handpiece 10 and attaches lightpipe 14 (disposable or otherwise) thereto. Then, in certain embodiments, the provider places handpiece 10 within a sanitary sheath (not pictured) preferably made of thin plastic to provide a contaminant barrier for the entire handpiece 10 . With or without the sheath, extra-shell channel 42 is coupled to lightpipe 14 and intra-shell hose 40 . The external light source (not shown) and computer 1126 are activated to provide light to light source 18 and to receive data from camera 16 . The provider then places distal end 26 of lightpipe 14 into the mouth of the patient such that inspection surface 36 of lightpipe 14 abuts chosen tooth 54 .
- a dental care provider selects handpiece 1010 and attaches end cap 1014 to shell 1012 .
- End cap 1014 includes cap conduit 1108 integrally therein, so an external conduit, such as extra-shell channel 42 , is not necessary.
- Computer 1126 and wireless receiver 1124 are activated to receive data from camera 1016 and microphone 1099 . The provider then places end cap 1014 portion of handpiece 1010 into the mouth of the patient such that air window 1110 of end cap 1014 abuts chosen tooth 54 .
- the patient has been examined with the system before, using either handpiece 10 or handpiece 1010 , then, for each examined tooth 54 , computer 1126 is instructed to access the past images of the tooth 54 (hereinafter, the “past images”).
- the provider using computer 1126 , attempts to match the placement of inspection surface 36 to the placement used for the past images.
- the matching process may take the form of an overlay of the current video signal with the past image of tooth 54 shown on monitor 1128 of computer 1126 .
- Such an overlay may provide an indication of the alikeness of individual pixels such that a dental professional may visually interpret the number of alike pixels.
- the dental professional then adjusts the handpiece 10 , 1010 to achieve what appears to be a maximum number of alike pixels.
- the first picture of tooth 54 is taken just as for any other tooth. Then, at some later time during the visit, air is introduced via depression of a foot pedal (not shown), depression of air outlet valve button 1062 , or otherwise sent through conduit 20 and cap conduit 1108 to dehydrate the lesion. The lesion is then checked for activity.
- One manner of determining the activity status of a suspected area involves taking a second picture of tooth 54 after the air is introduced to the tooth. After the introduction of air, the dental professional again attempts to match the placement of the handpiece 10 , 1010 to the position used for taking the first picture. Once the positioning is sufficiently alike, capture button 1072 is depressed or the handpiece 10 , 1010 is otherwise instructed to record an image.
- Computer 1126 then performs the overlay or other comparison of the second picture to the first picture.
- Computer 1126 determines the change in fluorescence, expressed as a percent change in fluorescence in one embodiment. If the fluorescence has changed between the two pictures by a pre-defined percentage, then the lesion is known to be active. However, if the fluorescence has not changed by the pre-defined percentage, then the lesion is held to be inactive or held to be a tooth imperfection.
- the finding of an active lesion is accompanied by a beep sound or other obvious sound or visual indicator. Likewise, the finding of a non-active lesion is accompanied by an indicator that is easily distinguishable from the indication of an active lesion.
- a finding of an active lesion permits the dental professional to implement a preventive treatment regimen consisting of periodic professional applications of a fluoride system, e.g., a fluoride varnish, and home-use of a daily fluoride treatment regimen. After a period of 2-3 months the lesion may be re-examined to determine the status and the need for further treatment regimens.
- a preventive treatment regimen consisting of periodic professional applications of a fluoride system, e.g., a fluoride varnish, and home-use of a daily fluoride treatment regimen.
- microphone 1099 is provided.
- Microphone 1099 is in communication with voice-recognition software on computer 1126 via antenna 1071 and wireless receiver 1124 .
- the dental professional may indicate which tooth 54 is currently being investigated or shown via pictures from camera 1016 as well as indicating which surface of tooth 54 is being investigated/shown. Accordingly, pictures and audio information regarding tooth 54 are associated with tooth 54 at computer 1126 .
- Patient notes may include the status of found lesions, periodontal conditions, or any other information that would be useful when reviewing the pictures. Additionally, microphone 1099 may be used to cause action within computer 1126 or handpiece 1010 .
- Microphone 1099 may be used to cause action within computer 1126 by audibly declaring which tooth 54 is being observed.
- the software may include a system that stores one or more pictures for each tooth 54
- the audible declaration by the dental professional may be used to indicate to computer 1126 which tooth 54 is about to be viewed for purposes of bringing up the past image of tooth 54 .
- the audible declaration instructs the software to save any taken first images so as to associate them with the proper tooth 54 .
- Microphone 1099 may also be used to cause action within handpiece 1010 or computer 1126 .
- the dental professional may utter, “capture” or other chosen language to instruct handpiece 1010 or the software in computer 1126 to save an image.
- Other events such as turning handpiece 1010 on and off may also be set up to be performed in response to verbal commands.
- verbal commands instead of a physical activity, such as depressing capture button 1072 may increase image surety by lessening the likelihood that handpiece 1010 will be moved and the taken image changed by the dental professional moving to depress capture button 1072 .
- microphone 1099 is not part of handpiece 1010 but is rather otherwise coupled to the computer 1126 .
- FIG. 5 shows a prior art handpiece 110 that is sold commercially by Inspektor.
- Inspektor handpiece 110 uses a detachable mirror 114 to aim light to tooth 54 and from tooth 54 .
- Mirror 114 and mirror mount 115 detach such that mirror 114 and mirror mount 115 may be placed in an autoclave machine for purposes of sterilization.
- Inspektor handpiece 110 is adjusted relative to tooth 54 such that the focal point 120 of a camera 116 is located on the tooth 54 surface. Maintaining the focal point 120 of camera 116 on the tooth 54 surface requires the provider to hold handpiece 110 steady. Proper placement of handpiece 110 is determined by using the received picture as feedback.
- mirror 114 and a lens of camera 116 are open surfaces exposed to the oral environment. Thus, mirror 114 and lens of camera 116 are susceptible to collecting foreign debris.
- Handpiece 2010 includes many similar pieces to those shown in handpiece 1010 .
- Handpiece 2010 includes shell 2012 and end cap 2014 selectively attached to shell 2012 .
- Shell 2012 houses LED's 2018 , air outlet conduit 2020 , air valve 2060 coupled to air outlet conduit 2020 , air outlet valve button 2062 , air canister 2066 , battery 2068 , electronics 2070 , and LED activation button 2072 .
- Shell 2012 is composed from plastic, includes right shell housing 2086 , and left shell housing 2088 .
- Right shell housing 2086 includes two button holes 2090 .
- Power lead holes (not shown) are also disposed within one or both of shell housings 2086 , 2088 .
- right and left shell housings 2086 , 2088 form a closed proximal end 2094 and an open distal end 2096 .
- Open distal end 2096 includes an exterior groove therein (not shown) that cooperates with an inner surface (not shown) of end cap 2014 to provide a keyed interlock therebetween.
- Each button hole 2090 is sized shaped, and located to receive and allow external exposure of one of LED activation button 2072 and air outlet valve button 2062 .
- Each power lead hole (not shown) is sized, shaped, and located to receive and allow external exposure of electrical leads 2098 of battery 2068 .
- End cap 2014 includes left end cap housing 2080 , right end cap housing 2082 , mirror 2084 , and cap conduit 2108 .
- Right and left end cap housings 2082 , 2080 each include sight windows 2016 defined therein.
- LED's 2018 emit light that reflects off mirror 2084 and illuminates tooth 54 .
- LED's 2018 emit light having a wavelength of 405 nm.
- Air canister 2066 couples to air valve 2060 . While not shown, handpiece 2010 includes an air charging valve and related conduit, similar to air supply valve 1064 . Air valve 2060 is operated via air outlet valve button 2062 . Depression of air outlet valve button 2062 opens air valve 2060 and allows fluid communication between air canister 2066 and air outlet conduit 2020 . Air outlet conduit 2020 fluidly couples to cap conduit 2108 when end cap 2014 is coupled to shell 2012 . Air canister 2066 provides pressurized air in air valve 2060 . Thus, depression of air outlet valve button 2062 allows the pressurized air to escape via air outlet conduit 2020 and cap conduit 2108 . Valve 2060 may be electrically or mechanically operated and air outlet valve button 2062 may be an electrical or mechanical button. Depression of air outlet valve button 2062 allows valve 2060 to open for a pre-determined length of time. Alternatively, valve 2060 is opened as long as air outlet valve button 2062 is depressed.
- battery 2068 includes exposed electrical leads 2098 that allow battery 2068 to be re-charged.
- One embodiment includes microphone (not shown) coupled to electronics 1070 . Operation of the microphone is similar to operation of microphone 1099 .
- End cap 2014 selectively attaches to shell 2012 and includes excitation/air window 2110 , cap conduit 2108 , and sight windows 2016 .
- End cap 2014 is designed to be disposable such that many disposable end caps 2014 would be used with each shell 2012 and its contents over the lifetime of handpiece 2010 .
- Mirror 2084 is oriented at a 45 degree angle relative to tooth 54 , although other angles may be used.
- Cap conduit 2108 is located such that air exiting therefrom creates a current along mirror 2084 and tooth 54 .
- Sight windows 2016 provide clearance such that the dental care provider may view illuminated tooth 54 that is abutting air window 2110 .
- a cradle (not shown), similar to cradle 1114 , is also envisioned.
- a dental care provider selects handpiece 2010 and attaches end cap 2014 to shell 2012 .
- the provider puts on goggles or glasses (not shown) having filters for lenses.
- the provider places end cap 2014 portion of handpiece 2010 into the mouth of the patient such that air window 2110 of end cap 2014 abuts chosen tooth 54 .
- LED's 2018 are activated via led activation button 2072 and the resulting fluorescence of tooth 54 is viewed by the dental care provider through sight windows 2016 and the glasses.
- air outlet valve button 2062 is depressed to release air, and the change in fluorescence, if any, is viewed by the dental care provider. This allows the dental care provider to determine if the suspected lesion is an active lesion and appropriate measures may be taken.
Abstract
A dental implement including a housing, a light source, and an air supply.
Description
- The present application is a continuation of U.S. patent application Ser. No. 11/617,103 filed on Dec. 28, 2006 and published on Jul. 3, 2008 as 2008/0160477, the specification of which is incorporated herein by reference.
- The invention relates to dental devices and more particularly to devices for detection of tooth decay/dental demineralization.
- While there has been a remarkable decline in the prevalence of dental caries (tooth decay) in U.S. children and adults during the past 40 years, dental caries continues to be a major public health problem in select portions of the U.S. population. Dental caries has been identified as the single most common chronic disease of childhood. Despite the strides made in treating and preventing dental caries, significantly more needs to be done to further combat the problem.
- Dental caries is a chronic infectious disease and earlier detection would reduce the ravages of the disease. Current caries detection methods (clinical exams, x-rays) are unable to detect the decay process until it has progressed to a point where it is necessary to place a restoration (filling). Since the loss of mineral (demineralization) from the enamel is a chronic process that occurs over a period of months to years, and since very small lesions (i.e., early detection) are completely reversible through the use of fluoride treatments and other preventive measures, the early detection of dental demineralization allows dental professionals to administer professional treatments to reverse the demineralization process rather than undertake more costly and less desirable restorative treatments.
- According to one embodiment of the present disclosure, a handheld dental implement is provided. The implement includes a housing defining an interior space; a power source; a light source electrically coupled to the power source; and a gas reservoir.
- According to another embodiment of the present disclosure, a wireless handheld dental implement is provided. The implement includes a housing defining an interior space; a power source; a light source electrically coupled to the power source; a reflective surface; and a gas conduit positioned to transmit gas into contact with the reflective surface.
- According to still another embodiment of the present disclosure, a handheld dental implement is provided. The implement includes a power source; a light source electrically coupled to the power source; and a microphone.
- According to yet another embodiment of the present disclosure, a dental investigation system is provided. The system includes a handpiece including a light source, a light detecting device, and a wireless communicator; and a receiver coupled to a processing unit configured to receive wireless transmissions from the handpiece.
- According to another embodiment of the present disclosure, a dental investigation system is provided. The system includes a processing unit; a handpiece in communication with the processing unit; and a microphone in communication with the processing unit.
- According to still another embodiment of the present disclosure, a method of recording data regarding a dental subject is provided. The method includes the steps of receiving pictures of a dental subject; associating the pictures with the dental subject; receiving audio input, the audio input containing information related to the dental subject; and associating the audio input with the dental subject.
- According to another embodiment of the present disclosure, a computer readable medium is provided. The computer readable medium includes instructions thereon such that when interpreted by a processor cause the processor to perform the steps of receiving pictures of a dental subject; associating the pictures with the dental subject; receiving audio input, the audio input containing information related to the dental subject; and associating the audio input with the dental subject.
- Additional features of the invention will become apparent to those skilled in the art upon consideration of the following detailed description of the illustrated embodiment exemplifying the best mode of carrying out the invention as presently perceived.
- The detailed description particularly refers to the accompanying figures in which:
-
FIG. 1 is a perspective, partially cut-away view of a handpiece for detection of dental demineralization; -
FIG. 2 is a perspective view of a lightpipe of the handpiece ofFIG. 1 ; -
FIG. 3 is a cross sectional view of a light source and the lightpipe ofFIG. 1 in contact with a tooth of a patient; -
FIG. 4 is a side elevational view of a camera and the lightpipe ofFIG. 1 in contact with a tooth of a patient; -
FIG. 5 is a perspective view of a prior art handpiece; -
FIG. 6 is a perspective view of a second embodiment handpiece for detection of dental demineralization; -
FIG. 7 is an exploded perspective view of the handpiece ofFIG. 6 ; -
FIG. 8 is a rear elevational view of the handpiece ofFIG. 6 ; -
FIG. 9 is a side, partially cut-away, view of the handpiece ofFIG. 6 ; -
FIG. 10 is a perspective view of the handpiece ofFIG. 6 in a cradle; -
FIG. 11 is a diagrammatical view of a computer and receiver for use with the handpiece ofFIG. 6 ; -
FIG. 12 is a perspective view of a third embodiment handpiece for detection of dental demineralization; -
FIG. 13 is a side, partially cut-away, view of the handpiece ofFIG. 12 ; and -
FIG. 14 is an exploded perspective view of the handpiece ofFIG. 12 . - Tooth decay or dental caries result from a de-mineralization of dental tissue. Introduction of light to dental tissue and observance of the fluorescence of the dental tissue allows early detection of dental demineralization through a process called quantitative light fluorescence (QLF). “QLF” has been trademarked by Inspektor Dental Care (hereinafter “Inspektor”). The use of the term “QLF” herein is meant to denote a quantitative light fluorescence type system, and not the specific system of Inspektor unless specifically stated otherwise. QLF allows earlier detection than a purely visual inspection and does not have the side effects associated with radiographic examinations. Furthermore, QLF provides an objective method of analysis of dental demineralization by permitting a dentist or other caregiver to quantify the size of lesions as well as monitor changes in the size of lesions over time. A more detailed description of QLF and a method for utilizing QLF is described in U.S. patent application Ser. No. 10/411,625 to Stookey et al. filed Apr. 10, 2003, the disclosure of which is incorporated herein by reference. Generally speaking, green fluorescence is analyzed to determine demineralization and red fluorescence is analyzed to determine the presence of plaque.
- To gather data for processing in a QLF system, a
handpiece 10, shown inFIG. 1 , is utilized.Handpiece 10 includes a handle orshell 12, alight pipe 14 attached toshell 12, anoptical train 15 to receive light fromlight pipe 14, acamera 16 to detect light provided tooptical train 15, alight source 18 to provide light tolight pipe 14, and aconduit 20 extending throughshell 12. Shell 12 includes a left half shell 21 and a right half shell 23 that cooperate to house, at least partially,optical train 15,camera 16,light source 18, andconduit 20.Shell 12 furthermore couples to lightpipe 14 as shown inFIG. 1 . -
Shell 12 includes inner cavities shaped to receive and holdcamera 16,light source 18,inter-shell hose 40, andlight pipe 14 in specific orientations.Lip 30 oflight pipe 14 is received inrecess 32 ofshell 12. Likewise,light source 18 is positioned to allow light therefrom to be directed throughlight pipe 14, off reflectingfacet 34, and outinspection surface 36. Similarly,camera 16 is positioned such that light enteringinspection surface 36, reflecting off reflectingfacet 34, and traveling throughlight pipe 14 is received bycamera 16. Additionally,shell 12 provides for wires (fiber optic, electrical, or otherwise) to extend from arear end 52 thereof. A fiberoptic cable 46 extends to the external light source (not shown), anelectrical cable 48 extends to acomputer 1126 to store, process, and display the image received bycamera 16. -
Light source 18 is preferably a fiber optic system that conveys illumination from a remote source but may also be a local source withinshell 12 or any other source known in the art. The light may be optically filtered by the system either before or after exitinglight source 18. Such filtering excludes unwanted light and noise from the desired signal. Furthermore, in one embodiment,light source 18 includes one or more light emitting diodes, laser diodes, or some combination thereof (locally or remotely). In such embodiments, each of the light sources may be of a different wavelength and combined as desired. The wavelength of the light used may be tailored, lengthened or shortened, to the dental tissue being observed as well as to the desired light penetration and to the light collection instrumentation (camera 16) so as to provide the desired optical response. It should be appreciated that while much of the description herein refers to fluorescence as the desired optical response, all types of optical responses are intended to within the scope of the present disclosure. It should also be appreciated that the term “dental tissue” is used herein to include all types of tissue found in the mouth, i.e. teeth, gums, tongue, cancerous cells. -
Optical train 15 includes alens 50 and at least one filter. Embodiments are envisioned wherelens 50 and the filter(s) may be combined into one structure or where no filter is present.Optical train 15 tailors the incoming information into a form that is best received bycamera 16 and that best provides the data for processing. Such tailoring may include providing selective attenuation of the reflected or scattered input illumination, in addition to fluorescent emission data. Whileoptical train 15 is described as having onelens 50 and filter, many lenses and filters may be included inoptical train 15 to provide different fields of view and different magnifications. -
Camera 16 is part of a digital imaging system that collects high-resolution images and live video of dental tissue.Camera 16 then transmits the images, either through a wire as shown or wirelessly, tocomputer 1126 for storage and processing. When describinghandpiece 1010 as “wireless,” it should be appreciated that “wireless” is intended to refer to the lack of electrical or supply lines extending to or fromhandpiece 1010 that would tetherhandpiece 1010 to another object such as acomputer 1126 or an air supply (not shown). One suitable model camera is the DXC-LS1/1 sold by Sony. In the present embodiment,camera 16 is a color camera that detects spectral responses of tissue to the provided illumination. However, in another embodiment,camera 16 is a black and white sensing camera. In one embodiment using black andwhite camera 16, abandpass filter 17 as part ofoptical train 15 configured to filter out light of substantially the same wavelength as theillumination source 18 is used and black andwhite camera 16 is used to detect scattering intensity. In another embodiment using black andwhite camera 16, abandpass filter 17 configured to filter out light of substantially the same wavelength as the tissue fluorescence is used and black andwhite camera 16 detects the intensity of tissue fluorescence. - Before reaching
camera 16, the light of the tooth images passes throughlight pipe 14.Light pipe 14 is a translucent (transparent) monolithic polymer such as polystyrene, polycarbonate, acrylic, or glass piece that attaches to an end of theshell 12. “Translucent” as used herein is meant to describe any material that is not opaque, thus meaning anything that transmits light while causing light diffusion as well as anything that is transparent (transmitting light without causing substantial light diffusion). Whilelight pipe 14 is described and shown as being a solid piece, embodiments are envisioned having voids and gaps withinlight pipe 14.Light pipe 14 is constructed from polycarbonate but may be constructed from any material that will allow light transmission of an adequate fidelity and acceptable, preferably low, signal loss. - As shown in
FIG. 2 ,light pipe 14 includes aproximal attachment end 22, a taperingbody 24, adistal end 26, and aconduit support 28.Proximal attachment end 22 includes alip 30 of constant depth and width.Lip 30 is sized and shaped to be securely received in arecess 32 ofshell 12. Separating left half shell 21 from right half shell 23 allows removal oflight pipe 14. Coupling left half shell 21 to right half shell 23 secureslight pipe 14 to shells 21, 23. Alternatively,shell 12 may be configured to have a pocket that slidably receiveslip 30 therein and is secured by a latch so as to not require the detachment of left half shell 21 from right half shell 23. - Tapering
body 24 includesconduit support 28 attached thereto which will be discussed in more detail below.Distal end 26 includes a reflectingfacet 34 and aninspection surface 36. Reflectingfacet 34 is in internal surface oflight pipe 14. Reflectingfacet 34 allows light entering fromproximal attachment end 22 across a proximallight transfer plane 25 to reflect and exit through distallight transfer plane 27 ofinspection surface 36 as shown inFIG. 3 . Likewise, reflectingfacet 34 allows light entering from distallight transfer plane 27 ofinspection surface 36 to reflect and exit through proximallight transfer plane 25 ofproximal attachment end 22 as shown inFIG. 4 . As will be discussed in more detail later, reflectingfacet 34 is shaped even more specifically to direct light frominspection surface 36 tocamera 16. The reflective properties of reflectingfacet 34 are provided by the difference in refractive index between the material oflight pipe 14 and the air surroundinglight pipe 14. Thus, it is not necessary to attach a reflective surface tolight pipe 14 to achieve the reflecting properties of reflectingfacet 34. However, embodiments are envisioned where an external member is attached tolight pipe 14 to provide reflective properties. - Reflecting
facet 34 is preferably at a 45-degree angle relative toinspection surface 36 andproximal attachment end 22. The 45-degree angle allows true image transmission and refraction betweeninspection surface 36 andproximal attachment end 22. However, it should be appreciated that embodiments are envisioned where reflectingfacet 34 is not at a 45-degree angle, and various lenses, optical filters, and/or optical processors, either integral or external tolight pipe 14, are utilized to construct a true image. - Tapering
body 24 anddistal end 26 are sized and shaped to be received in the mouth of a patient and to access posterior molars which, as a function of being farthest from the mouth opening, are typically the most difficult to access. Additionally, the size and shape of taperingbody 24 allows the device to be used on smaller patients where oral space is more limited. Furthermore,light pipe 14 is lightweight, and as such provides increased maneuverability and less user fatigue. -
Conduit 20 is provided to selectively deliver air totooth 54 to dehydrate suspected lesions. Alternatively,conduit 20 may delivery any number of fluids to a position proximatedistal end 26 oflight pipe 14 such as a fluoride containing solution, other reparative fluids, a contrast agent, or a biomarker. -
Conduit 20 extends withinshell 12 and below taperingbody 24. As shown inFIG. 1 ,conduit 20 includes aconnector 38, aninter-shell hose 40, and anextra-shell channel 42.Connector 38 allows an external supply hose (not shown) to supply air, water, or another fluid to be attached tointer-shell hose 40.Inter-shell hose 40 is coupled toextra-shell channel 42 viashell 12 to allow matter frominter-shell hose 40 to pass intoextra-shell channel 42 and out adistal end 44 ofextra-shell channel 42.Extra-shell channel 42 is a metal channel that couples toconduit support 28 oflight pipe 14 for support.Distal end 44 ofextra-shell channel 42 is positioned such that any matter exiting therefrom will beproximate inspection surface 36. Such local delivery assists a caregiver in determining the activity status of a detected lesion. - To effect the delivery, a supply tube of air (not pictured) is attached to
connector 38 and air is selectively pumped therethrough.Connector 38 is coupled tointer-shell hose 40 which is coupled toextra-shell channel 42 to allow localized delivery of the desired material. Furthermore, while theextra-shell channel 42 is shown as a tube that removably couples to an underside oflight pipe 14, other embodiments includeextra shell channel 42 defined withinlight pipe 14. - The shape and makeup of
light pipe 14 are designed to create afocal plane 56 forcamera 16 at or proximate toinspection surface 36. In use,inspection surface 36 is placed within a patient's mouth to abutt a selectedtooth 54. Abutting selectedtooth 54, combined with the location offocal plane 56 ofcamera 16 allows for a caregiver to easily find a location for handpiece 10 resulting in a clear picture.Focal plane 56 is configured to be at a distance that is the sum of the horizontal and vertical distances shown by dotted line inFIG. 4 . Abuttinginspection surface 36 withtooth 54 results in reproducibility of the desired picture from one inspection to the next by removing possible fluctuation of the distance betweeninspection surface 36 andtooth 54 between successive inspections and by reducing fluctuations from unsteadiness of an operator's hand. Light fromlight source 18, as it travels to and fromtooth 54, only passes through ambient air for a short distance, if at all, when theinspection surface 36 abutstooth 54. Control over the mediums through which the light passes increases the amount of control present over the signal and reduces chances for error that may be introduced if foreign matter is allowed in the light path. Furthermore,inspection surface 36 abuttingtooth 54 increases the likelihood that only light provided bylight source 18 is exciting the observed dental tissue and that the fluorescence observed bycamera 16 is a result of the provided illumination rather than from ambient light.Inspection surface 36 abuttingtooth 54 covers the portion oftooth 54 to be examined by the caregiver, thuslight pipe 14 simultaneously provides desired illumination while not providing space betweentooth 54 andhandpiece 10 that would allow undesired tooth illumination. - It should also be appreciated that acrylic
light pipe 14, or any plastic equivalent created by injection molding or otherwise, is relatively inexpensive to manufacture and thus may be used in a disposable fashion. Such disposable use results in increased hygiene practices for a dental practitioner. Non-disposable dental implements are typically subjected to a sterilization process, such as autoclaving, between patients. This sterilization is costly and can cause deterioration of the material being sterilized. Deterioration of a light pathway such as a lens, a mirror/reflecting surface, or a translucent material can adversely effect the pictures gathered from such equipment. Accordingly, the disposable nature oflight pipe 14 results in increased image fidelity and increased hygiene for the patient. However, embodiments are also envisioned that incorporate areusable light pipe 14. - Another
embodiment handpiece 1010 is shown inFIGS. 6-10 .Handpiece 1010 includes many similar pieces to those shown inhandpiece 10.Handpiece 1010 includesshell 1012, andend cap 1014 selectively attached toshell 1012.Shell 1012houses lens 1013,prism 1015,camera 1016,filter 1017, LED's 1018,air outlet conduit 1020,air valve 1060 coupled toair outlet conduit 1020, airoutlet valve button 1062,air supply valve 1064,air canister 1066,battery 1068,electronics 1070, and on/capture button 1072.End cap 1014 includes leftend cap housing 1080, rightend cap housing 1082, andmirror 1084. -
Shell 1012 is composed from plastic, includesright shell housing 1086, and leftshell housing 1088. Right and leftshell housings button hole 1090 andpower lead hole 1092. When assembled, right and leftshell housings proximal end 1094 and an opendistal end 1096. Opendistal end 1096 includes an exterior groove therein that cooperates with an inner surface (not shown) ofend cap 1014 to provide a keyed interlock therebetween. Eachbutton hole 1090 is sized shaped, and located to receive and allow external exposure of one ofcapture button 1072 and airoutlet valve button 1062. Eachpower lead hole 1092 is sized, shaped, and located to receive and allow external exposure ofelectrical leads 1098 ofbattery 1068. -
Lens 1013,prism 1015, andfilter 1017 function similarly tooptical train 15 to condition light to be received bycamera 1016. LED's 1018 emit light that reflects offmirror 1084 and illuminatestooth 54. In the current embodiment, LED's 1018 emit light having a wavelength of 405 nm. -
Air canister 1066 includesoutlet hub 1100 that couples tohub 1102 ofair supply valve 1064.Air supply valve 1064 further includesair inlet 1104 andair output 1106 coupled toair valve 1060.Air valve 1060 is operated via airoutlet valve button 1062. Depression of airoutlet valve button 1062 opensair valve 1060 and allows fluid communication betweenair canister 1066 andair outlet conduit 1020.Air outlet conduit 1020 fluidly couples to capconduit 1108 whenend cap 1014 is coupled toshell 1012.Air inlet 1104 is configured to receive an air supply hose (not shown) therein to provide an air charge toair canister 1066. Accordingly,air canister 1066 may be recharged as desired. Once charged,air canister 1066 provides pressurized air inair supply valve 1064 andair valve 1060. Thus, depression of airoutlet valve button 1062 allows the pressurized air to escape viaair outlet conduit 1020 andcap conduit 1108.Valve 1060 may be electrically or mechanically operated and airoutlet valve button 1062 may be an electrical or mechanical button. Depression of airoutlet valve button 1062 allowsvalve 1060 to open for a pre-determined length of time. Alternatively,valve 1060 is opened as long as airoutlet valve button 1062 is depressed. -
Camera 1016 is coupled to and controlled byelectronics 1070 and powered bybattery 1068.Capture button 1072 provides an input toelectronics 1070 to operatecamera 1016.Electronics 1070 includeantenna 1071 that allows wireless transmission of images fromcamera 1016.Antenna 1071 may be embedded inelectronics 1070 or physically separate therefrom. As previously noted,battery 1068 includes exposedelectrical leads 1098 that allowbattery 1068 to be re-charged. One embodiment includesmicrophone 1099 coupled toelectronics 1070. Operation ofmicrophone 1099 is discussed in more detail below. Embodiments are also envisioned wheremicrophone 1099 is located outside ofhandpiece 1010. Such embodiments include havingmicrophone 1099 positioned generally within the room of an examination and electronically coupled, wired or wirelessly, tocomputer 1126. -
End cap 1014 selectively attaches to shell 1012 and includes excitation/air window 1110 andcap conduit 1108.End cap 1014 is designed to be disposable such that manydisposable end caps 1014 would be used with eachshell 1012 and its contents over the lifetime ofhandpiece 1010.Mirror 1084 is oriented at a 45 degree angle relative to LED's 1018,filter 1017, and nearsurface 1112 ofcamera 1016 to direct light fromtooth 54 tocamera 1016 and from LED's 1018 totooth 54.Cap conduit 1108 is located such that air exiting therefrom creates a current alongmirror 1084 andtooth 54. -
FIG. 11 shows handpiece 1010 in acradle 1114.Cradle 1114 includeshousing 1116,power cord 1118, and internal electrical contacts (not shown).Housing 1116 includesbay 1122 that is sized to at least partially receive closedproximal end 1094 therein.Power cord 1118 is electrically coupled to the internal electrical contacts, potentially via a transformer (not shown). The internal electrical contacts are located withinbay 1122 such that the internal electrical contacts abutelectrical leads 1098 whenhandpiece 1010 is placed withincradle 1114.Bay 1122 may include a longitudinal keyway (not shown) therein that receives a key (not shown) disposed along or onshell 1012 ofhandpiece 1010 to alignelectrical leads 1098 with the internal electrical contacts.Cradle 1114 may also include a lever system (not shown) coupled to an air supply (not shown) such that placement ofhandpiece 1010 withincradle 1114 causes automatic charging ofair canister 1066. Alternatively,air canister 1066 may be charged incradle 1114 in a non-automatic manner or by manual connection of an air source (not shown) toair inlet 1104 whenhandpiece 1010 is out ofcradle 1114. -
FIG. 11 showswireless receiver 1124.Wireless receiver 1124 couples to acomputer 1126, via a wired connection, to allow wireless communication betweencomputer 1126 andhandpiece 1010. The wireless communication may include a video signal or still pictures fromcamera 1016 and audio signals frommicrophone 1099. - When examining teeth, active (growing) lesions, inactive lesions, and developmental defects are characterized by a localized decrease in mineralization, or demineralization. Defects are not typically repairable and inactive lesions often remain in such a state for years with no worsening of the condition. However, active lesions are growing decay that provide a heightened risk to the patient. Therefore, it is desirable to discriminate an active lesion from an inactive lesion or a tooth defect.
- Blowing air on the surface of
tooth 54 containing the suspected lesion allows dehydration of the lesion and results in a change in the fluorescence oftooth 54 when properly illuminated if the lesion is active. Non-active lesions and defects show little or no change in damage when dehydrated. Thus, it is desirable to be able to dehydrate lesions once found to determine their nature. It is furthermore desirable to be able to introduce a dehydration agent without gross alteration ofcamera 16 or the picture being taken so as to allow easy comparison of the hydrated and dehydrated pictures of the lesion. - In use, a dental care provider selects
handpiece 10 and attaches lightpipe 14 (disposable or otherwise) thereto. Then, in certain embodiments, the provider placeshandpiece 10 within a sanitary sheath (not pictured) preferably made of thin plastic to provide a contaminant barrier for theentire handpiece 10. With or without the sheath,extra-shell channel 42 is coupled tolightpipe 14 andintra-shell hose 40. The external light source (not shown) andcomputer 1126 are activated to provide light tolight source 18 and to receive data fromcamera 16. The provider then placesdistal end 26 oflightpipe 14 into the mouth of the patient such thatinspection surface 36 oflightpipe 14 abuts chosentooth 54. - Alternatively, a dental care provider selects
handpiece 1010 and attachesend cap 1014 to shell 1012.End cap 1014 includescap conduit 1108 integrally therein, so an external conduit, such asextra-shell channel 42, is not necessary.Computer 1126 andwireless receiver 1124 are activated to receive data fromcamera 1016 andmicrophone 1099. The provider then placesend cap 1014 portion ofhandpiece 1010 into the mouth of the patient such thatair window 1110 ofend cap 1014 abuts chosentooth 54. - If the patient has been examined with the system before, using either
handpiece 10 orhandpiece 1010, then, for each examinedtooth 54,computer 1126 is instructed to access the past images of the tooth 54 (hereinafter, the “past images”). The provider, usingcomputer 1126, attempts to match the placement ofinspection surface 36 to the placement used for the past images. The matching process may take the form of an overlay of the current video signal with the past image oftooth 54 shown onmonitor 1128 ofcomputer 1126. Such an overlay may provide an indication of the alikeness of individual pixels such that a dental professional may visually interpret the number of alike pixels. The dental professional then adjusts thehandpiece - It should be appreciated that abutting of inspection surface 36 (or
end cap 1014 proximate air window 1110) totooth 54 removes one direction of motion that must be re-aligned to the previous examination. Once the dental professional achieves what he believes is the optimal position, the dental professional presses capturebutton 1072 or otherwise causes the picture to be recorded (hereinafter, the “first picture”). The provider then continues to perform this procedure on eachtooth 54. - If, at any point, a suspected lesion is found, the first picture of
tooth 54 is taken just as for any other tooth. Then, at some later time during the visit, air is introduced via depression of a foot pedal (not shown), depression of airoutlet valve button 1062, or otherwise sent throughconduit 20 andcap conduit 1108 to dehydrate the lesion. The lesion is then checked for activity. One manner of determining the activity status of a suspected area involves taking a second picture oftooth 54 after the air is introduced to the tooth. After the introduction of air, the dental professional again attempts to match the placement of thehandpiece capture button 1072 is depressed or thehandpiece Computer 1126 then performs the overlay or other comparison of the second picture to the first picture.Computer 1126 determines the change in fluorescence, expressed as a percent change in fluorescence in one embodiment. If the fluorescence has changed between the two pictures by a pre-defined percentage, then the lesion is known to be active. However, if the fluorescence has not changed by the pre-defined percentage, then the lesion is held to be inactive or held to be a tooth imperfection. Embodiments are envisioned where the finding of an active lesion is accompanied by a beep sound or other obvious sound or visual indicator. Likewise, the finding of a non-active lesion is accompanied by an indicator that is easily distinguishable from the indication of an active lesion. - A finding of an active lesion permits the dental professional to implement a preventive treatment regimen consisting of periodic professional applications of a fluoride system, e.g., a fluoride varnish, and home-use of a daily fluoride treatment regimen. After a period of 2-3 months the lesion may be re-examined to determine the status and the need for further treatment regimens.
- During the examination the dental professional may wish to provide information, record notes regarding the patient, or to orally provide
instruction regarding handpiece 1010 operation. Accordingly,microphone 1099 is provided.Microphone 1099 is in communication with voice-recognition software oncomputer 1126 viaantenna 1071 andwireless receiver 1124. The dental professional may indicate whichtooth 54 is currently being investigated or shown via pictures fromcamera 1016 as well as indicating which surface oftooth 54 is being investigated/shown. Accordingly, pictures and audioinformation regarding tooth 54 are associated withtooth 54 atcomputer 1126. Patient notes may include the status of found lesions, periodontal conditions, or any other information that would be useful when reviewing the pictures. Additionally,microphone 1099 may be used to cause action withincomputer 1126 orhandpiece 1010.Microphone 1099 may be used to cause action withincomputer 1126 by audibly declaring whichtooth 54 is being observed. Whereas the software may include a system that stores one or more pictures for eachtooth 54, the audible declaration by the dental professional may be used to indicate tocomputer 1126 whichtooth 54 is about to be viewed for purposes of bringing up the past image oftooth 54. Similarly, the audible declaration instructs the software to save any taken first images so as to associate them with theproper tooth 54.Microphone 1099 may also be used to cause action withinhandpiece 1010 orcomputer 1126. Upon achieving desired placement ofhandpiece 1010, the dental professional may utter, “capture” or other chosen language to instructhandpiece 1010 or the software incomputer 1126 to save an image. Other events, such as turninghandpiece 1010 on and off may also be set up to be performed in response to verbal commands. Using verbal commands instead of a physical activity, such asdepressing capture button 1072 may increase image surety by lessening the likelihood that handpiece 1010 will be moved and the taken image changed by the dental professional moving to depresscapture button 1072. Other embodiments are envisioned wheremicrophone 1099 is not part ofhandpiece 1010 but is rather otherwise coupled to thecomputer 1126. -
FIG. 5 shows aprior art handpiece 110 that is sold commercially by Inspektor.Inspektor handpiece 110 uses adetachable mirror 114 to aim light totooth 54 and fromtooth 54.Mirror 114 andmirror mount 115 detach such thatmirror 114 andmirror mount 115 may be placed in an autoclave machine for purposes of sterilization. In use,Inspektor handpiece 110 is adjusted relative totooth 54 such that thefocal point 120 of acamera 116 is located on thetooth 54 surface. Maintaining thefocal point 120 ofcamera 116 on thetooth 54 surface requires the provider to holdhandpiece 110 steady. Proper placement ofhandpiece 110 is determined by using the received picture as feedback. In use,mirror 114 and a lens ofcamera 116 are open surfaces exposed to the oral environment. Thus,mirror 114 and lens ofcamera 116 are susceptible to collecting foreign debris. - Another
embodiment handpiece 2010 is shown inFIGS. 12-14 .Handpiece 2010 includes many similar pieces to those shown inhandpiece 1010.Handpiece 2010 includesshell 2012 andend cap 2014 selectively attached toshell 2012.Shell 2012 houses LED's 2018,air outlet conduit 2020,air valve 2060 coupled toair outlet conduit 2020, airoutlet valve button 2062,air canister 2066,battery 2068,electronics 2070, andLED activation button 2072. -
Shell 2012 is composed from plastic, includesright shell housing 2086, and leftshell housing 2088.Right shell housing 2086 includes two button holes 2090. Power lead holes (not shown) are also disposed within one or both ofshell housings shell housings proximal end 2094 and an opendistal end 2096. Opendistal end 2096 includes an exterior groove therein (not shown) that cooperates with an inner surface (not shown) ofend cap 2014 to provide a keyed interlock therebetween. Eachbutton hole 2090 is sized shaped, and located to receive and allow external exposure of one ofLED activation button 2072 and airoutlet valve button 2062. Each power lead hole (not shown) is sized, shaped, and located to receive and allow external exposure of electrical leads 2098 ofbattery 2068. -
End cap 2014 includes leftend cap housing 2080, rightend cap housing 2082,mirror 2084, andcap conduit 2108. Right and leftend cap housings sight windows 2016 defined therein. - LED's 2018 emit light that reflects off
mirror 2084 and illuminatestooth 54. In the current embodiment, LED's 2018 emit light having a wavelength of 405 nm. -
Air canister 2066 couples toair valve 2060. While not shown,handpiece 2010 includes an air charging valve and related conduit, similar toair supply valve 1064.Air valve 2060 is operated via airoutlet valve button 2062. Depression of airoutlet valve button 2062 opensair valve 2060 and allows fluid communication betweenair canister 2066 andair outlet conduit 2020.Air outlet conduit 2020 fluidly couples to capconduit 2108 whenend cap 2014 is coupled toshell 2012.Air canister 2066 provides pressurized air inair valve 2060. Thus, depression of airoutlet valve button 2062 allows the pressurized air to escape viaair outlet conduit 2020 andcap conduit 2108.Valve 2060 may be electrically or mechanically operated and airoutlet valve button 2062 may be an electrical or mechanical button. Depression of airoutlet valve button 2062 allowsvalve 2060 to open for a pre-determined length of time. Alternatively,valve 2060 is opened as long as airoutlet valve button 2062 is depressed. - As previously noted,
battery 2068 includes exposed electrical leads 2098 that allowbattery 2068 to be re-charged. One embodiment includes microphone (not shown) coupled toelectronics 1070. Operation of the microphone is similar to operation ofmicrophone 1099. -
End cap 2014 selectively attaches to shell 2012 and includes excitation/air window 2110,cap conduit 2108, andsight windows 2016.End cap 2014 is designed to be disposable such that manydisposable end caps 2014 would be used with eachshell 2012 and its contents over the lifetime ofhandpiece 2010.Mirror 2084 is oriented at a 45 degree angle relative totooth 54, although other angles may be used.Cap conduit 2108 is located such that air exiting therefrom creates a current alongmirror 2084 andtooth 54.Sight windows 2016 provide clearance such that the dental care provider may view illuminatedtooth 54 that is abuttingair window 2110. A cradle (not shown), similar tocradle 1114, is also envisioned. - In use, a dental care provider selects
handpiece 2010 and attachesend cap 2014 to shell 2012. The provider puts on goggles or glasses (not shown) having filters for lenses. The provider then placesend cap 2014 portion ofhandpiece 2010 into the mouth of the patient such thatair window 2110 ofend cap 2014 abuts chosentooth 54. LED's 2018 are activated via ledactivation button 2072 and the resulting fluorescence oftooth 54 is viewed by the dental care provider throughsight windows 2016 and the glasses. When a suspected lesion is found, airoutlet valve button 2062 is depressed to release air, and the change in fluorescence, if any, is viewed by the dental care provider. This allows the dental care provider to determine if the suspected lesion is an active lesion and appropriate measures may be taken. - Although the invention has been described in detail with reference to certain illustrated embodiments, variations exist within the scope and spirit of the invention as described and as defined in the following claims.
Claims (33)
1. A handheld dental implement including:
a housing defining an interior space;
an endcap coupled to the housing, the endcap including an outer wall having an internal surface and an external surface, the external surface opposing the internal surface, the outer wall further defining an interior space, the endcap being readily removable from the housing;
a light source located within the interior space of the housing; and
a mirror coupled to the internal surface of the outer wall of the endcap such that the mirror is located within the interior space defined by the outer wall.
2. The implement of claim 1 , wherein the endcap is coupled to a distal end of the housing.
3. The implement of claim 1 , further including a gas source located at least partially within the interior space of the housing.
4. The implement of claim 3 , the endcap further including a gas conduit within the outer wall thereof.
5. The implement of claim 4 , wherein the gas conduit is fluidly coupled to the gas source.
6. The implement of claim 5 , wherein the gas conduit includes a gas outlet and the gas outlet is positioned such that gas expelled therefrom contacts the mirror.
7. The implement of claim 1 , further including a gas conduit positioned to transmit gas from a gas source into contact with the mirror.
8. The implement of claim 7 , wherein the gas conduit is further positioned to transmit gas from the gas reservoir into contact with a diagnostic subject.
9. The implement of claim 1 , further including a light detecting device located within the housing.
10. The implement of claim 9 , wherein the mirror is positioned to reflect light from the light source onto a diagnostic specimen, and the mirror is further positioned to reflect light from the diagnostic specimen to the light detecting device.
11. The implement of claim 1 , wherein the endcap includes a distal end having a plurality of points on the outer wall that are sized and located to be abutted against a diagnostic specimen.
12. An endcap for use with a dental implement housing including:
an outer wall having an internal surface and an external surface, the external surface opposing the internal surface, the outer wall further defining an interior space; and
a reflective surface positioned on the internal surface such that the reflective surface is located within the interior space, and the reflective surface is positioned to reflect light from a light source onto a diagnostic specimen and reflect light from the diagnostic specimen to a light detecting device.
13. The endcap of claim 12 , wherein the endcap defines a proximal end and a distal end, the distal end of the endcap being smaller than the proximal end, and the endcap tapering in size from the proximal end to the distal end.
14. The implement of claim 12 , wherein the outer wall contains a gas conduit therein.
15. The implement of claim 14 , wherein the gas conduit includes a gas inlet and a gas outlet.
16. The implement of claim 15 , wherein the gas inlet is positioned to interface with a gas conduit of the dental implement housing.
17. The implement of claim 15 , wherein the gas outlet is positioned to expel gas into contact with the reflective surface.
18. The implement of claim 15 , wherein the gas outlet is positioned to expel gas into contact with the diagnostic specimen.
19. The implement of claim 12 , wherein the endcap includes a distal end having a plurality of points on the outer wall that are sized and located to be abutted against a diagnostic specimen.
20. An endcap for use with a dental implement housing including:
an outer wall having an internal surface and an external surface, the external surface opposing the internal surface, the outer wall further defining an interior space, the interior space being sized and located to provide for the transfer of light therethrough; and
a gas conduit disposed in the outer wall.
21. The endcap of claim 20 , wherein the endcap defines a proximal end and a distal end, the distal end of the endcap being smaller than the proximal end, and the endcap tapering in size from the proximal end to the distal end.
22. The implement of claim 20 , wherein the gas conduit includes an gas inlet and a gas outlet.
23. The implement of claim 22 , wherein the gas inlet is positioned to interface with a gas conduit of the dental implement housing.
24. The implement of claim 22 , wherein the gas outlet is positioned to expel gas into contact with the reflective surface.
25. The implement of claim 22 , wherein the gas outlet is positioned to expel gas into contact with the diagnostic specimen.
26. A method of examining the dentition of a plurality of patients including the steps of:
obtaining a dental instrument having a housing;
attaching a first endcap to the dental instrument housing, the endcap having an outer wall having an internal surface and an external surface, the external surface opposing the internal surface, the outer wall further defining an interior space, the interior space being sized and located to provide for the transfer of light therethrough, the endcap further including a gas conduit disposed in the outer wall;
examining the dentition of a first patient with the dental instrument;
detaching the first endcap from the dental instrument housing;
attaching a second endcap to the dental instrument housing; and
examining the dentition of a second patient with the dental instrument.
27. The method of claim 26 , further including the step of exposing the dentition of the first patient to gas expelled from the gas conduit of the first endcap after the step of examining the dentition of the first patient.
28. The method of claim 27 , further including the step of reexamining the dentition of the first patient after the step of exposing the dentition of the first patient to gas expelled from the gas conduit.
29. The method of claim 26 , wherein the step of examining the dentition of a first patient includes abutting a distal end of the first endcap to the dentition of the first patient.
30. The method of claim 26 , wherein the examination of the dentition of the first patient occurs at a first appointment on a first day and further including the step of examining the dentition of the first patient with the dental instrument at a second appointment on a second day.
31. The method of claim 30 , wherein the examination of the dentition of the first patient at the second appointment includes obtaining images from substantially identical views as images obtained of the dentition of the first patient at the first appointment.
32. The method of claim 31 , further including the step of comparing the images of the dentition taken at the first appointment to images of the dentition taken at the second appointment.
33. The method of claim 32 , wherein the comparison is automatically performed by software present in a dental examination device coupled to the dental instrument.
Priority Applications (1)
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US12/607,167 US20100047736A1 (en) | 2006-12-28 | 2009-10-28 | Handpiece for Detection of Dental Demineralization |
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US11/617,103 US8360771B2 (en) | 2006-12-28 | 2006-12-28 | Handpiece for detection of dental demineralization |
US12/607,167 US20100047736A1 (en) | 2006-12-28 | 2009-10-28 | Handpiece for Detection of Dental Demineralization |
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Also Published As
Publication number | Publication date |
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EP2097040A1 (en) | 2009-09-09 |
AU2007340054A1 (en) | 2008-07-10 |
KR20090094156A (en) | 2009-09-03 |
CA2673835A1 (en) | 2008-07-10 |
AU2007340054A2 (en) | 2010-05-13 |
EP2097040A4 (en) | 2011-12-21 |
US8360771B2 (en) | 2013-01-29 |
WO2008082968A1 (en) | 2008-07-10 |
US20080160477A1 (en) | 2008-07-03 |
JP2010514508A (en) | 2010-05-06 |
KR101051927B1 (en) | 2011-07-26 |
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