Patent US4746469A successfully refreshed from Google Patents.
US4746469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preparing plated dentures
Assignee: GC Corp
•
Filing: 1986-10-30
•
Granted: 1988-05-24
•
Expires: 2006-10-30
Abstract
Abstract A method for directly preparing a plated denture having improved accuracy within a short period of time by properly using photo-polymerizable resins having varied viscosities, and using as the impression material a dough product of photo-polymerizable resins having different viscosities with preparing of a basic plate, formation of alveolar ridge portion, arrangement of artificial teeth, formation of gingival portion, whereby the impression of the details of the mucosal surface of the oral mouth is reproduced with high fidelity, and is then polymerized and cured as such by active energy beams to use it as the resin surface.
Inventors
- 👤 Atsushi Yamashita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:59
CPC Classifications
A; A61; A61C; A61C13/00; A61C13/0001; A61C13/01; A61C13/04; A61C9/00; A61K; A61K6/00; A61K6/80; A61K6/884; A61K6/887; A61K6/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
228 words
A method for directly preparing a plated denture with photo-polymerizable resins having varied viscosities, which comprises the steps of: allowing a photo-polymerizable resin having a relatively high viscosity to come into pressure contact with a gypsum model and, thereafter, polymerizing and curing said resin by irradiation of active energy beams to prepare a basic plate; applying a photo-polymerizable resin having a lower viscosity which is lower than that of said basic plate resin upon the inner face of said basic plate and taking a corrected impression in the oral mouth and, thereafter, polymerizing and curing said resin by irradiation of active energy beams to form a plate having the corrected impression; applying a photo-polymerizable resin having a much lower viscosity upon the inner face of said plate having the corrected impression and taking a functional impression in the oral mouth and, thereafter, polymerizing and curing said resin by irradiation of active energy beams; using a photo-polymerizable resin having a relatively high viscosity to form an alveolar ridge portion on the outside of the thus obtained plate and arranging artificial teeth on said plate and, thereafter, polymerizing and curing said resin by irradiation of active energy beams; and using a photo-polymerizable resin having a medium viscosity to form a gingival portion and, thereafter, polymerizing and curing said resin by irradiation of active energy beams to form a plated denture.
Claim 2
Independent Claim
228 words
A method for directly preparing a plated denture with photo-polymerizable resins having varied viscosities, which comprises the steps of: allowing a photo-polymerizable resin having a relatively high viscosity to come into pressure contact with a gypsum model and, thereafter, polymerizing and curing said resin by irradiation of active energy beams to prepare a basic plate; applying a photo-polymerizable resin having a lower viscosity which is lower than that of said basic plate resin upon the inner face of said basic plate and taking a corrected impression in the oral mouth and, thereafter, polymerizing and curing said resin by irradiation of active energy beams to form a plate having the corrected impression; applying a photo-polymerizable resin having a much lower viscosity upon the inner face of said plate having the corrected impression and taking a functional impression in the oral mouth and, thereafter, polymerizing and curing said resin by irradiation of active energy beams; using a photo-polymerizable resin having a relatively high viscosity to form an alveolar ridge portion on the outside of the thus obtained plate and arranging artificial teeth on said plate and, thereafter, polymerizing and curing said resin by irradiation of active energy beams; and using a photo-polymerizable resin having a medium viscosity to form a gingival portion and, thereafter, polymerizing and curing said resin by irradiation of active energy beams to form a plated denture.
References Cited (Backward Citations)
US3421501A
Cited
US3460252A
Cited
US3621575A
Cited
US4012838A
Cited
US4267133A
Cited
US4439380A
Cited
US4521193A
Cited
US4457713A
Cited
JPS59106953A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-24 | 1991-11-23 | 1992-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-24 | 1995-11-23 | 1996-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-24 | 1999-11-23 | 2000-05-24 | $7700.00 | Window Closed / Lapsed |