Method for producing orthodontic devices and appliances

Details Method for producing orthodontic devices and appliances Method for producing orthodontic devices and appliances

1985-02-04

1986-02-04

Page, Thurman K.

Coating processes

Medical or dental purpose product; parts; subcombinations;...

Particulate or unit-dosage-article base

427 541, A01N 102, B05D 306

Patent

active

045685584

ABSTRACT:
A method for producing orthodontic devices and appliances by building up a plurality of resin layers on a plaster cast comprising applying a first thin layer of a composition comprising a diurethanedimethacrylate prepared from 2,2,4-trimethylhexamethylenediisocyanate and 2-hydroxyethylmethacrylate, and a photopolymerization catalyst to the plaster cast and briefly exposing said thin layer to light having a wavelength of 400-450 nm whereby said thin layer is partially polymerized, successively applying at least one additional thin layer on said first thin layer and partially polymerizing each successive thin layer by brief exposure to light having a wavelength of 400-450 nm until the layer thickness and shape desired for the device or appliance are attained, and the partially polymerized material is subsequently polymerized completely by exposure to light having a wavelength of 350 nm.

REFERENCES:
patent: 4105025 (1978-08-01), Wang et al.
patent: 4131114 (1978-12-01), Kirkpatrick et al.
patent: 4238522 (1980-12-01), Potts
patent: 4291087 (1981-09-01), Warburton, Jr.
patent: 4300968 (1981-11-01), Fottinger et al.
patent: 4316457 (1982-02-01), Liegeois
patent: 4340453 (1982-07-01), Noomem
patent: 4348427 (1982-09-01), Priola et al.
patent: 4393187 (1983-07-01), Boba et al.
patent: 4411931 (1983-10-01), Duong
patent: 4439480 (1984-03-01), Sachs et al.

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