Dentistry – Prosthodontics – Holding or positioning denture in mouth
Patent
1986-10-20
1988-05-17
Wilson, John J.
Dentistry
Prosthodontics
Holding or positioning denture in mouth
433213, 433214, 264 16, A61C 800
Patent
active
047447532
ABSTRACT:
A dental prosthesis is formed by attaching an internally threaded sleeve to a post by means of heat-meltable material. A dimensionally stable, heat-meltable material is applied to the post and around the sleeve. The heat-meltable materials are melted and replaced by a permanent material. A screw is inserted into the sleeve prior to the melting step. The melting and replacing steps comprise steps in an investment-type casting procedure wherein a unit comprised of the post, the sleeve, the screw, and the heat-meltable materials is embedded in an investment material such that a head of the screw is embedded in the investment material to maintain the positional relationship of the sleeve relative to the post during the melting step. A release material is applied over a body defined by the permanent material. A dimensionally stable, heat-meltable material is applied over the release material and is melted and replaced with a permanent material which forms an overlay capable of being removed upon removal of the screw.
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Ross Systems Corporation
Wilson John J.
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