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Publication numberUS2171695 A
Publication typeGrant
Publication date5 Sep 1939
Filing date8 Feb 1939
Priority date8 Feb 1939
Publication numberUS 2171695 A, US 2171695A, US-A-2171695, US2171695 A, US2171695A
InventorsHarper Robert N
Original AssigneeHarper Robert N
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Method and apparatus for procuring impressions of the surfaces of the anterior teeth or dental work
US 2171695 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

Sept. 5, 1939. HARPER I 2,171,695

METHOD AND APPARATUS FOR PROCURING IMPRESSIONS OF THE SURFACES OF' THE ANTERIOR TEETH FOR DENTAL WORK Filed Feb. 8, 1939 'IIIIIIIIIIIIIIIIIM v W Q/MHW Patented Sept. 5, 1939 UNITED STATES PATENT OFFICE Robert N. Harper, Danville, Va.

Application February 8, 1939, Serial No. 255,348

5 Claims.

This invention relates to a method and apparatus for procuring impressions of the surfaces of the anterior teeth for dental work and has for one of its objects to provide a tray that is adjustable and is shaped to hold material for taking impressions of the labial and incisal surfaces of the upper and the lower anterior teeth together with part of the incisal-lingual surfaces of the uppers simultaneously with any degree of overjet.

A further object of this invention is to provide a tray that is adjustable to all types of occlusion and is adapted to secure upper and lower impressions at the same time, usually in centric relation.

A further object is to secure in a single impression accurate and detailed outlines of the teeth from which a model is made, that is convenient to file for use as guides in arranging the 0 artificial replacing of teeth in prosthodontia, as records in orthodontia and periodontia as well as definte means of identification. It also provides a means of obtaining accurate impressions of any labial cavities that may appear for inlay 5 replacements.

With these and other objects in view the invention consists of a novel method and features of construction as will be more fully described and pointed out in the appended claims.

) Figure 1 is a plan view of the tray.

Figure 2 is a side elevation of the tray.

Figure 3 is a sectional view on the line 3-3 of Figure 1, illustrating, in section, the impression material.

5 Figure 4 is a section on the line 44 of Figure 1.

Figure 5 is a front elevation of the model.

Figure 6 is a sectional view of the model.

Referring now to the several figures of the drawing, the tray comprises an upper section I0 provided with a curved plate II at its forward end, and a lower section l2 provided with a curved plate I3 at its forward end. The two sections l0 and i2 of the tray are adjustably coni nected together by the Winged nut l5 and bolt I! that passes through the opening [6 in the upper section and slot M in the lower section. By

manipulating the winged nut the sections I I and I2 may be clamped in adjusted position. The I sections are also provided with cooperating guide pins l8 and guides l9 to keep the sections l0 and I2 in alinement with each other.

As shown in Figure 2 the curved plates I I and I3 overlap and form a substantial surface for i supporting the impression material 2|. The rear or plane portions of sections IE! and I2 serve as handles with which the tray may be manipulated in pressing impression material evenly against the labial surfaces 22 of the anterior teeth, for obtaining a mold for a model 20 showing the rela- 5 tive position of the upper and lower anterior teeth. By this method the overjet and overbite may be registered on a single model, that is practicable for filing for future use and reference. The accurate model obtained by this method '10 avoids the necessity of an articulator. The taking of the single simple impression upon the upper and lower teeth is not as annoying or objectionable to patients as the bite procedure heretofore in use.

In protrusive cases, where the teeth of the lower jaw protrude anterior to the upper teeth, the tray is inverted and an accurate unitary impression can be obtained in that way, showing the relative position of the upper and lower anterior teeth.

The method of the invention as practiced with the apparatus illustrated is as follows:

The sections l0 and I2 are adjusted so as to position the curved plate H from the curved plate l3 a distance substantially equal to the distance that the upper anterior teeth of the patient extend beyond or anterior to the lower teeth, A unitary mass of impression material 2| is then placed upon the pair of concave surfaces of the curved plates H and 13. The impression material 2| carried by the curved plates of the tray is then firmly pressed upon the labial side of the anterior teeth in the upper and the lower jaw by a single impression of the tray. When so impressed the material spreads over the labial side of the anterior teeth and also flows to cover the incisal surfaces of the teeth and to some extent the lingual surfaces particularly of the upper teeth due to the overbite.

After the impression has been taken, the formed material or mold is carefully taken from the teeth and is filled with a suitable plastic or molding composition such as plaster of Paris to form the record or model 26 whereby a correct reproduction of the teeth and interdentulous spaces is obtained. The amount of overjet or overbite, or the amount of retrusion or protrusion can be measured from the model with accuracy and the model can be retained as a permanent record.

It will be understood that various changes may be made in details within the scope of the appended claims without departing from the spirit of this invention.

Having described the invention, I claim:

1. An impression tray for dental work comprising a pair of superposed supporting sections, means for adjustably securing said sections together, a curved plate formed upon one edge of each section said curved plates being mounted in spaced apart concentric relation to each other one of said plates extending above and below its supporting section, said plates together forming an open concave receptacle for supporting a unitary mass of impression material in position to be molded against the labial side of the anterior teeth of the upper and lower jaws in occlusion.

2. An impression tray for dental work comprising a pair of overlap-ping curved plates concentric with respect to each other, and means for supporting said plates, said plates forming an open concave surface for sustaining a unitary mass of impression material upon said surface whereby the said material may be simultaneous- 1y molded against the labial sides of the anterior upper and lower teeth in occlusion.

3. An impression tray for dental work comprising an upper section having an upstanding curved plate projecting from said. section, a low' er section having a curved plate projecting therefrom and overlapping the curved plate on the upper section, said sections being adjustably mounted upon each other and having means to secure said sections in adjusted position, said curved plates being shaped and adapted to carry a unitary mass of plastic impression material to be impressed upon the labial side of the upper and lower anterior teeth simultaneously by means of said curved plates.

4. The method of forming a unitary model having impressed thereon a replica of the labial side of the upper and lower anterior teeth in occlusion, which comprises forming a mold by moving and pressing a unitary mass of impression material laterally against the labial sides of the anterior upper and lower teeth, removing the mold from the teeth, filling the mold with casting material for forming the model and then removing the mold from the model.

5. The method of forming a unitary model having formed thereon a replica of the labial side of the upper and lower anterior teeth in occlusion, which comprises forming a mold by moving and pressing a unitary mass of impression material laterally against the labial sides of the anterior upper and lower teeth, flowing the material over the incisal surface of the lower teeth and over the incisal-lingual surfaces of the upper teeth, removing the mold from the teeth, filling the mold with casting material for forming the model and then removing the mold from the model.

ROBT. N. HARPER.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2533855 *15 Apr 194712 Dec 1950Ushanoff Vasclei VAnterior dental tray
US2933811 *21 May 195826 Apr 1960Lifton Herman MDental bite tray
US5154609 *16 Jul 199113 Oct 1992George Peter TInstrument for registration of the dental bite
US5211559 *2 Jun 199218 May 1993Gillette Canada Inc.Dental treatment tray for holding medicament gel
US5566683 *24 Mar 199522 Oct 1996Thornton; W. KeithApparatus for prevention of snoring and improved breathing during sleep
US5678567 *18 Sep 199521 Oct 1997Thornton; W. KeithApparatus for adjusting a dental device
US5755219 *14 May 199626 May 1998Thornton; W. KeithDevice for improving breathing
US5829441 *24 Jun 19973 Nov 1998Nellcor Puritan BennettCustomizable dental device for snoring and sleep apnea treatment
US5954048 *16 Apr 199721 Sep 1999Thornton; W. KeithDevice and method for improving breathing
US5983892 *19 Jun 199716 Nov 1999Thornton; W. KeithDevice for improving breathing
US6155262 *21 Jan 19975 Dec 2000Thornton; W. KeithMethod and apparatus for adjusting a dental device
US620954231 Jan 19963 Apr 2001W. Keith ThorntonCombination face mask and dental device for improved breathing during sleep
US624792617 Jan 200019 Jun 2001W. Keith ThorntonOral appliance having a bonding layer and methods for fitting and relining same
US63053769 Sep 199923 Oct 2001W. Keith ThorntonDevice and method for improving breathing
US637482412 Apr 199923 Apr 2002W. Keith ThorntonDevice for improving breathing
US64057295 Apr 200018 Jun 2002W. Keith ThorntonOral appliance for improving breathing and method of constructing same
US64649245 Apr 200015 Oct 2002W. Keith ThorntonMethod of forming a custom mask using an impression mask
US651680531 Mar 199711 Feb 2003W. Keith ThorntonApparatus for prevention of snoring and improved breathing during sleep
US65717985 Apr 20003 Jun 2003W. Keith ThorntonDevice for improving breathing and method of constructing same
US66758028 May 200113 Jan 2004W. Keith ThorntonDevice for improving breathing incorporating a detachable venting seal
US685742824 Oct 200222 Feb 2005W. Keith ThorntonCustom fitted mask and method of forming same
US6948936 *24 Apr 200327 Sep 2005Align Technology, Inc.Methods and systems for modeling bite registration
US707041330 Sep 20054 Jul 2006Wagner Eugene COral applicator
US7114953 *29 Nov 20043 Oct 2006Wagner Eugene CTooth whitening appliance having membrane covered applicator
US71748951 May 200313 Feb 2007W. Keith ThorntonDevice and method for improving a user's breathing
US724365012 Jul 200417 Jul 2007Thornton W KeithCustom fitted mask configured for coupling to an external gas supply system and method of forming same
US745220725 Apr 200518 Nov 2008Align Technology, Inc.Methods and systems for modeling bite registration
US759710313 Feb 20076 Oct 2009W. Keith ThorntonDevice and method for improving a user's breathing
US767788930 Jul 200716 Mar 2010Thornton W KeithDevice and method for forming a custom oral appliance
US772174122 May 200925 May 2010Thornton W KeithOral appliance for treating a breathing condition
US77483866 Apr 20066 Jul 2010Thornton W KeithOral appliance for treating a breathing condition
US796328418 Aug 200421 Jun 2011Airway Technologies, LlcCustom fitted mask and method of forming same
US802027629 Nov 200720 Sep 2011Airway Technologies, LlcSystem and method for custom-orienting a medical mask to an oral appliance
US823621626 Jun 20077 Aug 2012Airway Technologies, LlcSystem and method for forming a custom medical mask using an orientation device
US83168577 Jun 201027 Nov 2012Airway Technologies, LlcOral appliance for treating a breathing condition
US83168587 Jun 201027 Nov 2012Airway Technologies, LlcSystem for coupling an oral appliance to a medical mask
US83566032 Jul 201022 Jan 2013Airway Technologies, LlcOral appliance for treating a breathing condition
US857322428 Sep 20105 Nov 2013Airway Technologies, LlcCustom-molded oral appliance and method of forming
US860779625 Feb 201017 Dec 2013Airway Technologies, LlcApparatus and method for coupling an oral appliance to a gas delivery device
US86620845 Apr 20114 Mar 2014Airway Technologies, LlcUniversal oral appliance with a universal coupler
US86719465 Apr 201118 Mar 2014Airway Technologies, LlcCustom dental appliance and method of creating a custom dental appliance
US87832604 Jun 201022 Jul 2014Zst Holdings Inc.Apparatuses and methods for mandibular protrusion
US87832615 Apr 201122 Jul 2014Airway Technologies, LlcApparatus for prevention of snoring and improved breathing
US887425126 Jun 200728 Oct 2014Airway Technologies, LlcSystem and method for forming a custom medical mask from a three-dimensional electronic model
US20030198917 *24 Apr 200323 Oct 2003Align Technology, Inc.Methods and systems for modeling bite registration
US20050196724 *25 Apr 20058 Sep 2005Align Technology, Inc.Methods and systems for modeling bite registration
US20070235037 *6 Apr 200611 Oct 2007Thornton W KOral Appliance for Treating a Breathing Condition
US20080032256 *30 Jul 20077 Feb 2008Thornton W KeithDevice and Method for Forming a Custom Oral Appliance
US20090223525 *22 May 200910 Sep 2009Thornton W KeithOral Appliance for Treating a Breathing Condition
US20100316973 *4 Jun 201016 Dec 2010Uti Limited PartnershipApparatuses and Methods for Mandibular Protrusion
US20120040311 *19 Mar 201016 Feb 2012Nobel Biocare Services AgSystem and method for aligning virtual dental models
WO1993001761A1 *8 Jul 19924 Feb 1993George Peter TInstrument for registration of the dental bite
Classifications
U.S. Classification433/42, 433/214
International ClassificationA61C9/00
Cooperative ClassificationA61C9/0006
European ClassificationA61C9/00A