Patent US5575656A successfully refreshed from Google Patents.
US5575656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for tooth restoration
Assignee: Individual
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Filing: 1994-10-21
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Granted: 1996-11-19
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Expires: 2014-10-21
Abstract
Abstract The present invention is directed to enhancing the accuracy with which tooth restorations are performed, including the manner by which a tooth is prepared and fit with a prosthetic crown. Further, the present invention is directed to reducing the skill dependent tasks associated with tooth restoration, while at the same time, improving the precision with which these procedures are performed. By improving the accuracy of restoration procedures, any need to repeat these procedures for a given patient can be eliminated and patient comfort can be improved.
Inventors
- 👤 Victor J. Hajjar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:42
CPC Classifications
A; A61; A61C; A61C5/00; A61C5/70
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
98 words
A process for restoring a tooth comprising the steps of: removing a first portion of said tooth to reduce exterior dimensions of the tooth; and removing a second portion of said tooth to form an interior of said tooth into a predetermined shape for receiving artificial tooth material wherein said step of removing said second portion further includes steps of: placing a tooth template having a drill guide mounted thereon over said tooth; and lowering a milling blade through said drill guide to remove said second portion, said milling blade having predetermined dimensions for forming said predetermined shape.
Claim 2
Dependent Claim
98 words
A process for restoring a tooth comprising the steps of: removing a first portion of said tooth to reduce exterior dimensions of the tooth; and removing a second portion of said tooth to form an interior of said tooth into a predetermined shape for receiving artificial tooth material wherein said step of removing said second portion further includes steps of: placing a tooth template having a drill guide mounted thereon over said tooth; and lowering a milling blade through said drill guide to remove said second portion, said milling blade having predetermined dimensions for forming said predetermined shape.
Claim 3
Dependent Claim
29 words
A process according to claim 1, further comprising the step: performing said steps of removing first and second portions on a model prior to removing any of said tooth.
Claim 4
Dependent Claim
29 words
A process according to claim 1, further comprising the steps of: placing a pre-formed sub-structure onto said tooth, said pre-formed sub-structure having predetermined dimensions matched to said predetermined shape.
Claim 5
Dependent Claim
23 words
A process according to claim 1, further comprising the step of: forming said tooth template and said drill guide as an integral unit.
Claim 6
Dependent Claim
73 words
Apparatus for shaping a tooth to receive artificial material, said apparatus comprising: a cylindrically shaped housing having an open end; a milling surface included in said housing, said housing and said milling surface being formed to mill sidewalls and an upper surface of said tooth into a predetermined shape for receiving artificial tooth material; and means, located on an exterior of said housing, for limiting a depth to which said tooth is milled.
Claim 7
Dependent Claim
73 words
Apparatus for shaping a tooth to receive artificial material, said apparatus comprising: a cylindrically shaped housing having an open end; a milling surface included in said housing, said housing and said milling surface being formed to mill sidewalls and an upper surface of said tooth into a predetermined shape for receiving artificial tooth material; and means, located on an exterior of said housing, for limiting a depth to which said tooth is milled.
Claim 8
Dependent Claim
22 words
Apparatus according to claim 5, wherein the milling surface further includes: a first cutting edge along a periphery of said open end.
Claim 9
Dependent Claim
41 words
Apparatus according to claim 6, wherein said housing further includes: a closed end opposite said open end, and wherein said milling surface also includes a second cutting edge formed along at least a portion of said closed end within said housing.
Claim 10
Dependent Claim
21 words
Apparatus according to claim 7, wherein said first cutting edge and said second cutting edge are formed integral with said housing.
Claim 11
Independent Claim
80 words
An apparatus for shaping a tooth to receive an artificial tooth structure comprising, in combination: means for milling a tooth; and means for guiding said milling means and for stabilizing said milling means relative to said tooth such that said milling means forms the tooth into a predetermined shape, wherein said milling means further includes: means for limiting a depth to which said tooth is milled, said limiting means including a stop for abutting a surface of said guiding means.
Claim 12
Independent Claim
80 words
An apparatus for shaping a tooth to receive an artificial tooth structure comprising, in combination: means for milling a tooth; and means for guiding said milling means and for stabilizing said milling means relative to said tooth such that said milling means forms the tooth into a predetermined shape, wherein said milling means further includes: means for limiting a depth to which said tooth is milled, said limiting means including a stop for abutting a surface of said guiding means.
Claim 13
Dependent Claim
19 words
The combination according to claim 9, wherein said predetermined shape includes a predetermined side wall angle of said tooth.
Claim 14
Dependent Claim
23 words
The combination according to claim 9, wherein said limiting means further includes: means for adjusting said depth to which said tooth is milled.
Claim 15
Dependent Claim
38 words
The combination according to claim 9, wherein said guiding means further includes: a plastic template formed using an articulated set of dental models, said plastic template being formed with a sleeve mounted thereon for receiving said milling means.
Claim 16
Dependent Claim
17 words
Apparatus according to claim 12, wherein said template and said sleeve are formed as an integral unit.
Claim 17
Dependent Claim
38 words
The combination according to claim 9, wherein said milling means further includes: a water cooled housing having a milling surface formed integrally therewith, said housing having external dimensions suitable for movement of said housing within said guiding means.
Claim 18
Dependent Claim
112 words
Process for shaping a tooth to receive an artificial tooth structure comprising the steps of: selecting predetermined dimensions for a sub-structure of the artificial tooth structure based upon dimensions of a milling device; forming said sub-structure with said predetermined dimensions, said sub-structure being formed to receive artificial tooth material; and guiding said milling device and stabilizing said milling device relative to said tooth such that said milling device forms the tooth into a predetermined shape which corresponds to said predetermined dimensions, said step of guiding and stabilizing further including a step of: limiting a depth to which said tooth is milled by using a stop which abuts a surface of a guide.
Claim 19
Dependent Claim
112 words
Process for shaping a tooth to receive an artificial tooth structure comprising the steps of: selecting predetermined dimensions for a sub-structure of the artificial tooth structure based upon dimensions of a milling device; forming said sub-structure with said predetermined dimensions, said sub-structure being formed to receive artificial tooth material; and guiding said milling device and stabilizing said milling device relative to said tooth such that said milling device forms the tooth into a predetermined shape which corresponds to said predetermined dimensions, said step of guiding and stabilizing further including a step of: limiting a depth to which said tooth is milled by using a stop which abuts a surface of a guide.
Claim 20
Dependent Claim
24 words
Process according to claim 15 further comprising the step of: applying said artificial tooth material to said sub-structure to form the artificial tooth structure.
Claim 21
Dependent Claim
25 words
Process according to claim 15, wherein said step of forming further includes the step of: machining said sub-structure to said predetermined dimensions using a die.
Claim 22
Independent Claim
81 words
An apparatus for shaping a tooth to receive an artificial tooth structure comprising, in combination: means for milling a tooth; and means for guiding said milling means and for stabilizing said milling means relative to said tooth such that said milling means forms the tooth into a predetermined shape, wherein said guiding means further includes: a plastic template formed using an articulated set of dental models, said plastic template being formed with a sleeve mounted thereon for receiving said milling means.
Claim 23
Independent Claim
81 words
An apparatus for shaping a tooth to receive an artificial tooth structure comprising, in combination: means for milling a tooth; and means for guiding said milling means and for stabilizing said milling means relative to said tooth such that said milling means forms the tooth into a predetermined shape, wherein said guiding means further includes: a plastic template formed using an articulated set of dental models, said plastic template being formed with a sleeve mounted thereon for receiving said milling means.
Claim 24
Dependent Claim
17 words
Apparatus according to claim 18, wherein said template and said sleeve are formed as an integral unit.
References Cited (Backward Citations)
US3979829A
Cited
US4179810A
Cited
US5002489A
Cited
US5098293A
Cited
US5284442A
Cited
US5366374A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-11-19 | 2000-05-20 | 2000-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-11-19 | 2004-05-20 | 2004-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-11-19 | 2008-05-20 | 2008-11-19 | $7700.00 | Window Closed / Lapsed |