WO2000074589B1 - Endodontic systems and instruments for the anatomical, sectional and progressive corono-apical preparation of root canals - Google Patents

Endodontic systems and instruments for the anatomical, sectional and progressive corono-apical preparation of root canals

Info

Publication number
WO2000074589B1
WO2000074589B1 PCT/US2000/008122 US0008122W WO0074589B1 WO 2000074589 B1 WO2000074589 B1 WO 2000074589B1 US 0008122 W US0008122 W US 0008122W WO 0074589 B1 WO0074589 B1 WO 0074589B1
Authority
WO
WIPO (PCT)
Prior art keywords
file
endodontic instrument
operative
root canal
middle portion
Prior art date
Application number
PCT/US2000/008122
Other languages
French (fr)
Other versions
WO2000074589A1 (en
Inventor
Francesco Riitano
Dan E Fischer
Original Assignee
Ultradent Products Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US09/325,035 external-priority patent/US6059572A/en
Application filed by Ultradent Products Inc filed Critical Ultradent Products Inc
Priority to AU40353/00A priority Critical patent/AU4035300A/en
Priority to EP00919711A priority patent/EP1180984A4/en
Priority to MXPA01012513A priority patent/MXPA01012513A/en
Priority to CA002375675A priority patent/CA2375675A1/en
Priority to BRPI0011104-0A priority patent/BR0011104B1/en
Priority to JP2001501128A priority patent/JP2003501136A/en
Publication of WO2000074589A1 publication Critical patent/WO2000074589A1/en
Publication of WO2000074589B1 publication Critical patent/WO2000074589B1/en

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C5/00Filling or capping teeth
    • A61C5/40Implements for surgical treatment of the roots or nerves of the teeth; Nerve needles; Methods or instruments for medication of the roots
    • A61C5/42Files for root canals; Handgrips or guiding means therefor
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/0007Control devices or systems
    • A61C1/0015Electrical systems
    • A61C1/003Control of rotation of instrument

Abstract

A root canal is sequentially cleaned in sections from the crown to the apex by dividing it into three sections including an operative coronal portion, an operative middle portion and an apical portion. After an opening is formed into the tooth to provide access into the root canal, the opening is preferably rectified to remove obstructions so that the anatomical root canal can be fully accessed. The pulp material is then sequentially removed from the portion of the root canal above the apical portion of the root canal with a set of instruments (410). The apical portion is then cleaned with another set of instruments (470). An optional set of instruments (440) can also be used to improve the access into the apical portion such that irrigants can be delivered to the apical portion. Cleaning of the pulp material from the root canal also shapes the root canal to ease filling of the root canal with a filling material. The root canal preparation and shaping are completed while maintaining the original anatomy of the root canal. Each file has an abrading portion and terminates at a tip. The files of the set (410) of instruments used to clean the portion of the root canal above the apical portion have properties which enable the abrading portion of the file to conform to the configuration of the root canal while simultaneously moving the file in a cleaning motion.

Claims

AMENDED CLAIMS[received by the International Bureau on 1 December 2000 (01.12.00); original claims 1-68 replaced by amended claims 1-32 (5 pages)]
1. An endodontic instrument system adapted for anatomical cleaning of the operative coronal portion, the operative middle portion and the apical root portion of an operative root canal in a tooth, the endodontic instrument system comprising: first endodontic instrument configured for use in the operative middle portion of an operative root canal to anatomically clean essentially all pulp material from the operative middle portion, the first endodontic instrument including a file having a top end opposite a tip, the file having a length corresponding to at least the combined length of the operative coronal portion and the operative middle portion in order to remove pulp material from essentially all of the operative middle portion of the operative root canal, the file having an abrading portion for removing pulp material, the file being able to flex such that the abrading portion is urged against root canal surfaces while the file is rotated and moved in a cleaning motion, thereby enabling contours of the operative middle portion to be used as a guide for movement of the file in conformance to the anatomical shape of the operative middle portion while effecting removal and cleaning of pulp material from essentially all of the operative middle portion, and a handle connected to the top end of the file, the handle being configured to enable a user to operatively move the file in an abrasive action while bending and flexing the file within the operative middle portion of the operative root canal; and an apical portion cleaning instrument adapted for cleaning the apical root portion through the delivery of an irrigant after the pulp material has been essentially removed from the operative coronal portion and the operative middle portion by the first endodontic instrument.
2. An endodontic instrument system as defined in claim 1 , wherein the file of the first endodontic instrument has sufficient rigidity to apply pressure against the root canal surfaces via the abrading portion as the file is flexed to urge the abrading portion against root canal surfaces and as the file is simultaneously moved in a cleaning motion.
3. An endodontic instrument system as defined in claim 1 , wherein the file of the first endodontic instrument is configured to enable a practitioner to move the file around the perimeter of the operative middle portion of the operative root canal.
4. An endodontic instrument system as defined in claim 1, wherein the file of the first endodontic instrument is configured to enable a practitioner to move the file along a side of the operative middle portion in a manner such that the tip does not remain primarily in one position as the operative middle portion is cleaned.
5. An endodontic instrument system as defined in claim 1, further comprising a stop configured to be positioned on the file of the first endodontic instrument in order to limit insertion of the file into the operative coronal portion and the operative middle portion without substantially extending into the apical portion.
6. An endodontic instrument system as defined in claim 1 , wherein the file of the first endodontic instrument has a shank portion above the abrading portion and below the handle, wherein the shank portion is adapted to receive a stop.
7. An endodontic instrument system as defined in claim 1, wherein the file of the first endodontic instrument has a length that limits the penetration of the file in the root canal to essentially only the operative middle portion of the root canal.
8. An endodontic instrument system as defined in claim 1, further comprising a second endodontic instrument configured to adequately improve access into the apical root portion after the pulp material has been essentially removed from the operative middle portion by the first endodontic instrument such that irrigants can be delivered into the apical portion of the root canal from an irrigation needle.
9. An endodontic instrument system as defined in claim 1, further comprising a second endodontic instrument configured for improving access into the apical root portion after the pulp material has been essentially removed from the operative middle portion by the first endodontic instrument, wherein the second endodontic instrument includes: a file having a top end opposite a tip, the file having a length that enables the file to reach within the apical portion of the root canal, the file having an abrading means for removing pulp material, the abrading means being located on a portion of the file such the abrading means can be moved against the root canal to improve the access into the apical portion of the root canal; and a handle connected to the top end of the file of the second endodontic instrument.
10. An endodontic instrument system as defined in claim 1 , wherein the apical portion cleaning instrument is an irrigator tip adapted for coupling with a delivery device to deliver an irrigant into the apical portion after the pulp material has been essentially removed from the operative middle portion.
11. An endodontic instrument system as defined in claim 1 , wherein the apical portion cleaning instrument is an irrigator tip coupled to a delivery device to deliver an irrigant into the apical portion after the pulp material has been essentially removed from the operative middle portion.
12. An endodontic instrument system adapted for anatomical cleaning of the operative coronal portion, the operative middle portion and the apical root portion of an operative root canal in a tooth, the endodontic instrument system comprising: a first endodontic instrument configured for use in the operative middle portion of an operative root canal to anatomically clean essentially all pulp material from the operative middle portion, the first endodontic instrument including a file having a top end opposite a tip, said file having a length corresponding to at least the combined length of the operative coronal portion and the operative middle portion in order to remove pulp material from essentially all of the operative middle portion of the operative root canal, the file having an abrading portion for removing pulp material, the file being able to flex such that the abrading portion is urged against root canal surfaces while the file is rotated and moved in a cleaning motion, thereby enabling contours of the operative middle portion to be used as a guide for movement of the file in conformance to the anatomical shape of the operative middle portion while effecting removal and cleaning of pulp material from essentially all of the operative middle portion, and a handle connected to the top end of the file, the handle being configured to enable a user to operatively move the file in an abrasive action while bending and flexing the file within the operative middle portion of the operative root canal; a second endodontic instrument configured for improving access into the apical root portion after the pulp material has been essentially removed from the operative middle portion by the first endodontic instrument; and an apical portion cleaning instrument adapted for cleaning the apical root portion after the pulp material has been essentially removed from the operative coronal portion and the operative middle portion.
13. An endodontic instrument system as defined in claim 12, wherein the file of the first endodontic instrument has sufficient rigidity to apply pressure against the root canal surfaces via the abrading portion as the file is flexed to urge the abrading portion against root canal surfaces and as the file is simultaneously moved in a cleaning motion.
14. An endodontic instrument system as defined in claim 12, wherein the file of the first endodontic instrument is configured to enable a practitioner to move the file around the perimeter of the operative middle portion of the operative root canal.
15. An endodontic instrument system as defined in claim 12, wherein the file of the first endodontic instrument is configured to enable a practitioner to move the file along a side of the operative middle portion in a manner such that the tip does not remain primarily in one position as the operative middle portion is cleaned.
16. An endodontic instrument system as defined in claim 12, further comprising a stop configured to be positioned on the file of the first endodontic instrument in order to limit insertion of the file into the operative coronal portion and the operative middle portion without substantially extending into the apical portion.
17. An endodontic instrument system as defined in claim 12, wherein the file of the first endodontic instrument has a shank portion above the abrading portion and below the handle, wherein the shank portion is adapted to receive a stop.
18. An endodontic instrument system as defined in claim 12, wherein the file of the first endodontic instrument has a length that limits the penetration of the file in the root canal to essentially only the operative middle portion of the root canal.
19. An endodontic instrument system as defined in claim 12, wherein the second endodontic instrument comprises a file having a top end opposite a tip, the file having a length that enables the file to reach within the apical portion of the root canal, the file having an abrading portion for removing pulp material, the abrading portion being located on the file such the abrading portion can be moved against the root canal to improve the access into the apical portion of the root canal, and a handle connected to the top end of the file of the second endodontic instrument.
20. An endodontic instrument system as defined in claim 12, wherein the second endodontic instrument is configured to adequately improve access into the apical root portion after the pulp material has been essentially removed from the operative middle portion such that irrigants can be delivered into the apical portion of the operative root canal from an irrigation needle.
21. An endodontic instrument system as defined in claim 12, wherein the apical portion cleaning instrument comprises an irrigator tip adapted for coupling with a delivery device to deliver an irrigant into the apical root portion after the pulp material has been essentially removed from the operative middle portion.
22. An endodontic instrument system as defined in claim 12, wherein the apical portion cleaning instrument comprises an irrigator tip and wherein the irrigation tip is coupled to a delivery device to deliver an irrigant into the apical root portion after the pulp material has been essentially removed from the operative middle portion .
23. An endodontic instrument system as defined in claim 12, wherein the apical portion cleaning instrument comprises a file with a top end extending from a handle, wherein the file has a tip opposite the top end, wherein the file has an abrading portion for removing pulp material, the abrading portion being located on the file such that the abrading portion can remove the pulp material from the apical portion of the root canal.
24. An endodontic instrument adapted for mechanical rotation to anatomically clean the operative coronal portion and the operative middle portion of an operative root canal in a tooth, the endodontic instrument comprising: a file having a top end opposite a tip, said file having a length corresponding to at least the combined length of the operative coronal portion and the operative middle portion, said file having an abrading portion with abrasive particles on at least an upper section of the file for aggresive abrasion and with a lower section below the upper section that is less abrasive than the upper section, said file being able to flex such that the abrading portion is urged against root canal surfaces while the file is rotated and moved in a cleaning motion, thereby enabling contours of the operative middle portion to be used as a guide for movement of the file in conformance to the anatomical shape of the operative middle portion while effecting removal and cleaning of pulp material from essentially all of the operative middle portion, and a handle connected to the top end of the file, the handle being configured to enable a user to operatively move the file in an abrasive action while bending and flexing the file within the operative middle portion of the root canal.
25. An endodontic instrument as defined in claim 24, wherein said lower section of the file that is twisted to have a fluted configuration.
26. An endodontic instrument as defined in claim 24, wherein the upper section has a length that is no greater than about half of the length of the file.
27. An endodontic instrument as defined in claim 24, wherein the upper section has a length that is in a range from about 4 to about 10 mm in length.
28. An endodontic instrument as defined in claim 24, wherein the abrasive particles are diamond particles.
29. An endodontic instrument as defined in claim 24, wherein the abrasive particles are selected from the group consisting of refractories of silicon carbide and fused alumina, aluminum oxide, natural aluminum oxide, alumina ceramics, glass, silicon dioxide, silicon carbide, boron nitride, and other comparably hard materials.
30. An endodontic instrument as defined in claim 24, wherein the abrasive particles have an average particle size in a range from about 30 μm to about 350 μm.
31. An endodontic instrument as defined in claim 24, wherein the abrasive particles are positioned on the upper section of the file with a thickness in a range from about 100 μm to about 700 μm.
32. An endodontic instrument as defined in claim 24, wherein said file has a shank portion above the abrading portion.
STATEMENT UNDER ARTICLE 19
Please amend the claims in the above-identified application by cancelling sheets 78 - 93 of this application which contain the claims and abstract. Please substitute therefor sheets 78 - 83 which omit originally filed independent claims 12, 27, 40, 56, and 57, as well as their dependent claims. The claims as submitted herewith have been renumbered accordingly. No new matter has been introduced by these amendments. The abstract is identical to the abstract as originally filed and is found on substitute page 83.
PCT/US2000/008122 1999-06-03 2000-03-27 Endodontic systems and instruments for the anatomical, sectional and progressive corono-apical preparation of root canals WO2000074589A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
AU40353/00A AU4035300A (en) 1999-06-03 2000-03-27 Endodontic systems and instruments for the anatomical, sectional and progressivecorono-apical preparation of root canals
EP00919711A EP1180984A4 (en) 1999-06-03 2000-03-27 Endodontic systems and instruments for the anatomical, sectional and progressive corono-apical preparation of root canals
MXPA01012513A MXPA01012513A (en) 1999-06-03 2000-03-27 Endodontic systems and instruments for the anatomical, sectional and progressive corono-apical preparation of root canals.
CA002375675A CA2375675A1 (en) 1999-06-03 2000-03-27 Endodontic systems and instruments for the anatomical, sectional and progressive corono-apical preparation of root canals
BRPI0011104-0A BR0011104B1 (en) 1999-06-03 2000-03-27 endodontic instrument system.
JP2001501128A JP2003501136A (en) 1999-06-03 2000-03-27 Endodontic systems and instruments for progressive crown-apical preparation by anatomical segment of root canal

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US09/325,035 1999-06-03
US09/325,035 US6059572A (en) 1995-06-06 1999-06-03 Endodontic methods for the anatomical, sectional and progressive corono-apical preparation of root canals with three sets of dedicated instruments
US09/492,566 US6217335B1 (en) 1996-06-06 2000-01-27 Endodontic systems and methods for the anatomicall, sectional and progressive corono-apical preparation of root canals with minimal apical intrusion
US09/492,566 2000-01-27

Publications (2)

Publication Number Publication Date
WO2000074589A1 WO2000074589A1 (en) 2000-12-14
WO2000074589B1 true WO2000074589B1 (en) 2001-02-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/008122 WO2000074589A1 (en) 1999-06-03 2000-03-27 Endodontic systems and instruments for the anatomical, sectional and progressive corono-apical preparation of root canals

Country Status (8)

Country Link
US (1) US6217335B1 (en)
EP (1) EP1180984A4 (en)
JP (1) JP2003501136A (en)
AU (1) AU4035300A (en)
BR (1) BR0011104B1 (en)
CA (1) CA2375675A1 (en)
MX (1) MXPA01012513A (en)
WO (1) WO2000074589A1 (en)

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Also Published As

Publication number Publication date
JP2003501136A (en) 2003-01-14
BR0011104B1 (en) 2011-08-23
BR0011104A (en) 2002-03-19
WO2000074589A1 (en) 2000-12-14
AU4035300A (en) 2000-12-28
EP1180984A1 (en) 2002-02-27
US6217335B1 (en) 2001-04-17
EP1180984A4 (en) 2006-08-02
CA2375675A1 (en) 2000-12-14
MXPA01012513A (en) 2002-07-30

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