# US 5,348,474 A · Methods of recording dynamico-functional dental impressions > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,348,474 A - Document ID: US5348474A - Status: Granted - Kind: A - Application number: 08/023,849 - Filed: 1993-02-26 - Granted: 1994-09-20 - Earliest claimed: 1988-11-04 - Inventors: Giovanni Pasini - Web page: https://patentgrep.com/patent/US5348474A ## CPC - A61K 6/90: Compositions for taking dental impressions - C08L 31/04: Homopolymers or copolymers of vinyl acetate - A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D) - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) ## Abstract Methods of recording a muco-dynamic or immediate functional impression of the dental arches of a patient onto the base or peripheral borders of a prosthetic denture, or rebasing a patient's prosthetic denture, utilizing a non-ionic, non-hydrophilic, impression-forming composition comprising polyvinyl acetate, aliphatic ketones, aliphatic esters, aliphatic alcohols or aliphatic ethers, non-toxic, non-aromatic, plasticizing oils and non-toxic and non-extractable organic pigments. ## Claims ### Claim 1 A method of recording a mucodynamic impression of the dental arches of a patient or of the peripheral areas of said arches onto the base or peripheral borders of a prosthetic denture utilizing a non-ionic, non-hydrophilic impression-forming composition comprising: ______________________________________ Polyvinyl acetate (PVAc) 50-85% by weight C.sub.3 to C.sub.6 aliphatic 2-25% by weight ketones C.sub.3 to C.sub.8 aliphatic 1-25% by weight esters C.sub.2 to C.sub.10 aliphatic alcohols 1-25% by weight or aliphatic ethers Non-toxic, non-aromatic, 0.5-10% by weight plasticizing oils selected from the group consisting of dioctyl adipate, glycerol triacetate and polyglycols Non-toxic and non-extract- 0-2% by weight, able black, yellow, red or white organic pigments ______________________________________ and is free of any gel-forming components, peroxide-based catalysts, aromatic amine-based inhibitors, aromatic plasticizing oils or compounds and incompatible plasticizers, said method including the steps of: (a) heating said composition to about 50.degree. C. and spreading the heated composition on the base or peripheral borders of the denture; (b) inserting the denture into the patient's mouth and allowing it to remain in the mouth for about 3-4 days; and (c) removing the denture from the patient's mouth. ### Claim 2 A method of recording an immediate functional impression of the dental arches of a patient onto the base of a prosthetic denture utilizing a non-ionic, non-hydrophilic impression-forming composition comprising: ______________________________________ Polyvinyl acetate (PVAc) 50-85% by weight C.sub.3 to C.sub.6 aliphatic ketones 2-25% by weight C.sub.3 to C.sub.8 aliphatic esters 1-25% by weight C.sub.2 to C.sub.10 aliphatic alcohols 1-25% by weight or aliphatic ethers Non-toxic, non-aromatic, 0.5-10% by weight plasticizing oils selected from the group consisting of dioctyl adipate, glycerol triacetate and polyglycols Non-toxic and non-extract- 0-2% by weight, able black, yellow, red or white organic pigments ______________________________________ and is free of any gel-forming components, peroxide-based catalysts, aromatic amine-based inhibitors, aromatic plasticizing oils or compounds and incompatible plasticizers, said method including the steps of: (a) heating said composition to about 50.degree. C. and spreading the heated composition on the base or peripheral borders of the denture; (b) inserting the denture into the patient's mouth and allowing it to remain in the mouth for about 10-20 minutes; (c) rinsing the mouth with water; (d) removing the denture from the patient's mouth. ### Claim 3 A method of rebasing a patient's prosthetic denture on a temporary, semipermanent or permanent basis utilizing a nonionic, non-hydrophilic impression-forming composition comprising: ______________________________________ Polyvinyl acetate (PVAc) 50-85% by weight C.sub.3 to C.sub.6 aliphatic ketones 2-25% by weight C.sub.3 to C.sub.8 aliphatic esters 1-25% by weight C.sub.2 to C.sub.10 aliphatic alcohols 1-25% by weight or aliphatic ethers Non-toxic, non-aromatic, 0.5-10% by weight plasticizing oils selected from the group consisting of dioctyl adipate, glycerol triacetate and polyglycols Non-toxic and non-extract- 0-2% by weight, able black, yellow, red or white organic pigments ______________________________________ and is free of any gel-forming components, peroxide-based catalysts, aromatic amine-based inhibitors, aromatic plasticizing oils or compounds and incompatible plasticizers, said method including the steps of: (a) heating said composition to about 50.degree. C. (b) applying said heated composition to the areas of the denture requiring rebasing; and (c) inserting the denture into the patient's mouth. ### Claim 4 (depends on 1, 2, 3) A method according to claims 1, 2 or 3 wherein said aliphatic ketone is acetone. ### Claim 5 (depends on 1, 2, 3) A method according to claims 1, 2 or 3 wherein said aliphatic ester is ethyl acetate. ### Claim 6 (depends on 1, 2, 3) A method according to claims 1, 2 or 3 wherein said aliphatic alcohol is ethyl alcohol. ### Claim 7 (depends on 1, 2, 3) A method according to claims 1, 2 or 3 wherein said plasticizing oil is glycerol triacetate. ### Claim 8 (depends on 1, 2, 3) A method according to claims 1, 2 or 3 wherein said pigments are red or yellow pigments.