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 Title: |
US4920984:
Mouthpiece and method for producing the same
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Furumichi, Hiroshi; Osaka, Japan
Makishima, Takao; Osaka, Japan
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| Assignee: |
Sunstar Kabushiki Kaisha, Osaka, Japan
other patents from SUNSTAR KABUSHIKI KAISHA (551955) (approx. 41)
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| Published / Filed: |
1990-05-01
/ 1987-10-15
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| Application Number: |
US1987000108677
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| IPC Code: |
Advanced:
A63B 71/08;
Core:
more...
IPC-7:
A61F 5/56;
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| U.S. Class: |
Current:
128/861;
128/862;
433/006;
Original:
128/861;
128/862;
433/006;
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| Field of Search: |
128/136,859,860,861,862
433/071
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| Priority Number: |
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| 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.
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| Attorney, Agent or Firm: |
Sughrue, Mion, Zinn, Macpeak & Seas ;
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| Primary / Asst. Examiners: |
Yu, Mickey; Sam, Charles H.
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| Maintenance Status: |
E1 Expired Check current status
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| INPADOC Legal Status: |
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| Designated Country: |
DE FR GB SE
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| Family: |
Show 8 known family members
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First Claim:
Show all 2 claims |
What is claimed is:
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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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 44 U.S. patent(s) that reference this one
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