Dentistry – Apparatus – Hand manipulatable implement
Patent
1981-08-27
1982-10-12
Mancene, Gene
Dentistry
Apparatus
Hand manipulatable implement
433 32, 433 81, 433122, A61C 308
Patent
active
043536980
ABSTRACT:
Disclosed is a dental tool for obturating stripped root canals, comprising an elongated rod-like body having a shank or handle and a working portion with radially outwardly extending shoulders or flutes facing away from the shank and making an angle with the longitudinal axis of the body of about 90.degree. or less. The diameter of the shoulders or flutes may be progressively diminished from adjacent the shank toward the end of the working portion to provide a taper, and in another embodiment the shoulders are continuous and spiraled. In use, the tool may be linearly and angularly reciprocally mounted in a power operator, and may be heated for softening the obturating materials, such a gutta-percha. The reciprocation of the tool, particularly the linear reciprocation, forces the shoulders into compressive contact with the softened material and, when adequate density is attained, backs out of the root canal naturally through reverse action without specific operator effort. Preferably, the flutes are doubled and continuous and means is provided to rotate the tool at high rpm, oppositely to the direction of the spiral.
REFERENCES:
patent: 336777 (1886-02-01), Williams
patent: 1151352 (1915-08-01), Frink
patent: 1307446 (1919-06-01), Kerr
patent: 1694857 (1928-12-01), Kulik
patent: 1753352 (1930-04-01), Stark
patent: 1771182 (1930-07-01), Lentulo
patent: 3727313 (1973-04-01), Graham
Inventive Technology International, Inc.
Mancene Gene
Wilson John J.
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