Tooth positioner with harder areas

Details Tooth positioner with harder areas Tooth positioner with harder areas

1982-09-30

1984-05-15

Hoag, Willard E.

Plastic and nonmetallic article shaping or treating: processes

Dental shaping type

264240, 264255, 264347, B29C 508, B29H 700

Patent

active

044487355

ABSTRACT:
Tooth positioner comprising several integral tooth engaging portions formed of materials having different hardness, the harder portions of which assist in anchoring the tooth positioner in its proper position in the patient's mouth.
Further, a method of making such tooth positioners by enclosing dental counterpart of the mold to form a first portion of the positioner, placing at least one other material into the mold in interfacing relation to the first portion to form a second portion of the tooth positioner, and curing the several materials into an integral body before extracting the positioner from the mold.

REFERENCES:
patent: 2467432 (1949-04-01), Kesling
patent: 2479780 (1949-08-01), Remensnyder
patent: 2789351 (1957-04-01), Gordon
patent: 3089487 (1963-05-01), Enicks et al.
patent: 3303844 (1967-02-01), Johnson et al.
patent: 3496936 (1970-02-01), Gores
patent: 3950851 (1976-04-01), Bergerson
patent: 4080412 (1978-03-01), Colpitts et al.

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