Abstract A mouthpiece comprising an ethylene-vinyl acetate copolymer having a vinyl acetate content of from 12 to 33 wt %, and the process for producing the same comprising the steps of: preparing a thermoplastic elastic sheet material formed to be increased in thickness from one end to the other end; preparing a teeth impression cast of a user who is going to use a mouthpiece to be produced; and pressing said teeth impression cast against said thermoplastic elastic sheet material in a softened state so as to transfer a shape of said teeth of said user onto said thermoplastic elastic sheet material to thereby obtain a mouthpiece which is set to be thicker at a portion corresponding to a front teeth position than at a portion corresponding to a molar teeth position.
Inventors
👤 Hiroshi Furumichi
👤 Takao Makishima
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-08 22:35
CPC Classifications
A; A63; A63B; A63B71/00; A63B71/08; A63B71/085
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
150 words
A method for producing a mouthpiece comprising the steps of: preparing a thermoplastic elastic sheet material formed to be increased in thickness from one end to the other end, said elastic sheet material comprising an ethylene-vinyl acetate copolymer having a vinyl acetate content of from 12-33 wt %; preparing a teeth impression cast of a user who is going to use a mouthpiece to be produced; and pressing said teeth impression cast against said thermoplastic elastic sheet material in a softened state, in such a position so that the thicker portion of said thermoplastic sheet material is at the front teeth position, so as to transfer a shape of said teeth of said user onto said thermoplastic elastic sheet material to thereby obtain a mouthpiece which is set to be thicker at a portion corresponding to a front teeth position than at a portion corresponding to a molar teeth position.
Claim 2
Independent Claim
150 words
A method for producing a mouthpiece comprising the steps of: preparing a thermoplastic elastic sheet material formed to be increased in thickness from one end to the other end, said elastic sheet material comprising an ethylene-vinyl acetate copolymer having a vinyl acetate content of from 12-33 wt %; preparing a teeth impression cast of a user who is going to use a mouthpiece to be produced; and pressing said teeth impression cast against said thermoplastic elastic sheet material in a softened state, in such a position so that the thicker portion of said thermoplastic sheet material is at the front teeth position, so as to transfer a shape of said teeth of said user onto said thermoplastic elastic sheet material to thereby obtain a mouthpiece which is set to be thicker at a portion corresponding to a front teeth position than at a portion corresponding to a molar teeth position.
Claim 3
Dependent Claim
35 words
A method of producing a mouthpiece as claimed in claim 1, wherein an ethylene-vinyl acetate copolymer having a vinyl acetate content of from 28 to 33 wt % is used as said elastic sheet material.