Manufacturing method for artificial tooth

Details Manufacturing method for artificial tooth Manufacturing method for artificial tooth

1998-05-05

1999-10-19

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Dental shaping type

Tooth forming

264 20, 264 28, 264603, A61C 13083

Patent

active

059684240

ABSTRACT:
A ceramic powder having a uniform particle diameter of 50 .mu.m or smaller is used as a dental ceramic powder to produce a high-precision and compact artificial tooth. The ceramic powder fired assures a non-porous and compact structure of the artificial tooth. In a manufacturing method for the artificial tooth, the cream of ceramic powder is poured into a core, the core with the ceramic cream loaded is frozen to shape, thawed, dried and then fired in a furnace. To assure even more compact structure, the cream is compacted and hardened prior to freezing. Pressure is efficiently applied in the compaction and hardening process.

REFERENCES:
patent: 2196258 (1940-04-01), Erdle
patent: 2337036 (1943-12-01), Erdle
patent: 2765512 (1956-10-01), Nesbit
patent: 2869215 (1959-01-01), Smith
patent: 4931241 (1990-06-01), Freitag
patent: 5156856 (1992-10-01), Iwasaki

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