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Mouthpiece and method for producing the same

  • US 4,920,984 A
  • Filed: 10/15/1987
  • Issued: 05/01/1990
  • Est. Priority Date: 10/15/1986
  • Status: Expired due to Fees
First Claim
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1. 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.

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