Dentistry – Method or material for testing – treating – restoring – or... – Crown
Patent
1995-12-11
1998-03-24
Wilson, John J.
Dentistry
Method or material for testing, treating, restoring, or...
Crown
433215, A61C 510
Patent
active
057306001
ABSTRACT:
The present invention is a method for forming, repairing or restoring a dental restoration which includes the steps of forming a base material of high-fusing temperature metal particles, low fusing temperature metal particles and a volatile binder substantially or entirely of wax; applying the base material to a die; shaping the base material upon said die into the desired configuration of the dental restoration; removing the configured base material from the die; combining particles of activated carbon with investment material to form a combined dental investment material having activated carbon in a concentration above at least 0.005 wt. % of the combined dental investment material; filling the configured base material with the combined dental investment material; heat treating the shaped base material in the investment at temperatures up to 1200.degree. C. to vaporize the volatile binder from the base material for forming a porous structure with a void volume of at least 20%; and filling the porous structure with a filler material to form a finished dental coping.
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Shoher Itzhak
Whiteman Aharon E.
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