A - Human Necessities – 61 – C
Patent
A - Human Necessities
61
C
83/22, 18/57
A61C 13/10 (2006.01) A61C 13/225 (2006.01)
Patent
CA 1078652
ABSTRACT OF THE DISCLOSURE A novel dental prosthesis device and a method for its manufac- ture are disclosed herein. The dental prosthesis includes one or more artificial teeth, each having a crown portion and a neck portion. A unitary dentive base material encases the neck of each tooth, and conforms to the shape of a portion of the human mouth. The base is a polymeric material which is compatible with human mouth tissue for extended periods and has the following mechanical characteristics when cured: (i) duro- meter hardness of 90 to 100, and (ii) thermal deformability when heated to 120 - 140°F. The method involves the steps of: (i) placing a plura- lity of individual artificial teeth in a mold, each tooth having a crown portion and a neck portion; (ii) placing a polymeric material in the mold, the polymeric material being compatible with human mouth tissue for extended periods of time and, when cured, having durometer hardness of from 90 to 100 and thermal deformability when heated to 120°F. to 140°F. (iii) forming the polymeric material into a denture base having the neck portion of the teeth embedded therein and conforming to the shape of the human mouth; (iv) curing the material at a temperature of from 140° to 200°F.; and (v) cooling the denture and removing the denture from the mold. In this way, a dental prosthesis device is provided in which pro- fessional fitting adjustments to conform to the wearer and to ensure occlusive harmony can be accomplished with facility.
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