Phosphonitrilic fluoroelastomer lined denture
AssigneeGulf South Research Institute
InventorsPaul May, Luis R. Guerra
Life of this patent
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Abstract
A prosthetic denture which is lined on its tissue bearing surfaces with a phosphonitrilic fluoroelastomer layer to provide a resilient, durable cushion for the prosthetic denture; and a method for making same is disclosed.
Claims10
A prosthetic dental fixture comprising a biocompatible cushioning liner of a linear phosphonitrilic fluoroelastomer, having the general formula ##STR4## wherein R is a fluorocarbon, bonded to the tissue bearing surfaces of the base of said prosthetic dental fixture.
A polymethylmethacrylate prosthetic denture having a biocompatible, hydrophobic, resilient, cushioning denture liner consisting of a linear phosphonitrilic fluoroelastomer, having the general formula ##STR5## wherein R is a fluorocarbon, bonded to the tissue bearing surfaces of the base of said denture;
- said liner consisting of a 1-3 mm layer adhesively bonded to said base by an adhesive.
A method for making a lined denture wherein the lining is fabricated of a phosphonitrilic fluoroelastomer having the general formula ##STR6## wherein R is a fluorocarbon, comprising the steps of:
- (a) constructing a stone model from a dental fixture recipient;
- (b) heat forming a sheet of phosphonitrilic fluoroelastomer on said stone model;
- (c) placing said formed sheet and stone model in a mold flask;
- (d) packing said flask with an uncured acrylic denture base material;
- (e) closing said flask and heat curing the denture base and said liner to bond the composite;
- and
- (f) removing the lined denture base and finishing same.
Dependencies are inferred from the claim text.