Thermoplastic and injectable endodontic filling compositions

Details Thermoplastic and injectable endodontic filling compositions Thermoplastic and injectable endodontic filling compositions

1990-07-02

1991-01-22

Ivy, C. Warren

Dentistry

Method or material for testing, treating, restoring, or...

Endodontic

4332281, 523116, A61C 502

Patent

active

049867547

ABSTRACT:
A nonshrinkable, thermoplastic and injectable endodontic filling composition. The composition is a mixture of transpolyisoprene, either naturally produced as balata or gutta percha, or synthesized from isoprene, and a liquid castor ester platicizer. Alternatively, the mixture comprises transpolyisoprene, a liquid castor ester plasticizer and a liquid castor oil or dimethyl silcon fluid lubricant. The mixture is preferably a combination of the transpolyisoprene, the liquid castor ester plasticizer and the liquid castor oil or liquid dimethyl silicon fluid lubricant or both. The composition is compounded to form a highly thermoplastic material which is injectable at a clinically acceptable temperature with a manually operated injection system without shrinkage of the composition after placement in a dental root canal.

REFERENCES:
patent: 2066117 (1934-10-01), Mayfield
patent: 2148833 (1938-02-01), Raynolds
patent: 3031423 (1962-04-01), Meier
patent: 3418264 (1968-12-01), Deuter
patent: 4449938 (1984-05-01), Pollak
patent: 4483679 (1984-11-01), Fujisawa et al.
patent: 4632977 (1986-12-01), Riazi
patent: 4740245 (1988-04-01), Futami
patent: 4931096 (1990-06-01), Fujisawa
Yee, "Three-Dimensional Obturation of the Root Canal Using Injection-Molded Thermoplasticized Dental Gutta-Percha," Journal of Endodontics, vol. 3, No. 5, May 1977, pp. 168-174.

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