US3839796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prosthetic denture and method
Assignee: Individual
•
Filing: 1972-10-10
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Granted: 1974-10-08
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Expires: 1992-10-10
Abstract
Abstract A prosthetic denture comprising: an assembly of prosthetic teeth having a hard base prosthetic gum structure cast and bonded thereto; said prosthetic gum structure having a recess adapted to align generally with a toothless human gum area; a deflectably formable soft layer in said recess; said soft layer having a conforming recess adapted generally to fit a human gum area; the marginal edges of said soft layer bonded to said prosthetic base gum structure; an impression formed layer of hardenable material covering said soft layer of deflectably formable material; the disclosure also relating to methods of producing and fitting the aforementioned dentures.
Inventors
- 👤 J Hazar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:55
CPC Classifications
A; A61; A61C; A61C13/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
38 words
The invention as defined in claim 1 wherein: a liner of hard material having impression fitting configuration relative to a human palatal vault area is bonded to said deflectibly formable layer in conformance with an impression configuration thereof.
Claim 2
Independent Claim
249 words
A method for producing an artificial denture, comprising: forming a generally U-shaped assembly of hard prosthetic teeth bonding a permanent generally U-shaped hard base structure to said assembly of hard prosthetic teeth and providing a terminus of said hard base structure disposed a short distance rearwardly of the incisor areas of said assembly of said prosthetic teeth; bonding a soft deflectibly formable layer onto said permanent hard base and extending said deflectibly formable layer over a palatal vault area so as to abridge said U-shaped base rearwardly of said terminus to provide a soft deflectibly formable palate vault portion bonded to said base; inserting said base and deflectibly formable layer into a patient''s mouth and deflectibly forming said deflectibly formable palate vault portion into close proximity to the palatal vault area of the patient''s mouth and deflectibly forming remaining portions of said layer into close proximity to a toothless gum area of a patient''s mouth, then removing the denture and placing an uncured hardenably hard liner material, in fluid form, on the soft deflectibly formable layer, then reinserting the denture into the human mouth and impression forming the hard uncured material into an impression conformance with the palatal vault and the toothless gum area of the patient''s mouth and allowing the uncured hardenable liner to harden over the deflectibly formable layer and to bond thereto, to form a rigid liner which conforms intimately to the features of the palatal vault area and the toothless gum area of the mouth.
Claim 3
Dependent Claim
45 words
The invention as defined in claim 3 wherein said soft deflectibly formable layer is heated before insertion in the patient''s mouth to allow ease of deflectible forming of said layer including said palatal vault portion into close conformity to the features of the person''s mouth.
Claim 4
Dependent Claim
275 words
In an artificial denture, the combination of: a generally U-shaped assembly of hard prosthetic teeth; said assembly having crown and incisor areas, and second areas adapted to be fixed in a prosthetic gum structure; a permanent substantially rigid hard prosthetic generally U-shaped gum structure bonded to said second areas of said teeth; said prosthetic base structure having a generally U-shaped in cross section recess co-extensive with said assembly of teeth and adapted generally to receive a toothless human gum area; and a layer of soft deflectibly formable material in said U-shaped recess, said deflectibly formable material having marginal edges and a recess shaped generally to fit a toothless gum area; and peripheral areas of said deflectibly formable area sealingly coupled to prevent food particles from entering therebetween; said base structure extending and having a terminus portion disposed a short distance rearwardly relative to the foremost or incisor teeth of said assembly; said deflectibly formable material faired into said terminus portion of said hard base material to form a smooth transitory surface in said palatal vault area at a lower surface which is disposed to be adjacent the human tongue; said denture being provided with a palatal vault portion disposed rearwardly of said terminus portion, said palatal vault portion abridging a central area between side portions of said U-shaped base structure; said palatal vault portion formed only of deflectibly formably material and capable of being easily deflectibly formed upwardly and set into closely conforming relation with any one of a variety of different palatal vault areas of human mouths for preliminary impression forming of said deflectibly formable layer in any one of several different human mouths.
References Cited (Backward Citations)
US3083459A
Cited
US3727309A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-07 | 1978-04-08 | 1978-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-07 | 1982-04-08 | 1982-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-07 | 1986-04-08 | 1986-10-08 | $7700.00 | Window Closed / Lapsed |