1976-03-23
1977-10-18
Mancene, Louis G.
85 61, A61K 502
Patent
active
040539822
ABSTRACT:
A dental anchor is disclosed comprising an elongated member for anchoring a superstructure to a tooth. The elongated member includes at least one threaded section defining an anchoring portion that is attached to an L-shaped manipulating section by a reduced thickness portion in the form of an annular groove. The reduced thickness portion is frangible. The manipulating section is comprised of a cylindrical guide element that is coaxial with the anchoring portion and a torque transferring element having an axis that is substantially perpendicular to the axis of the guide element. The dental anchor is used with a dental attachment in the form of an elongated member having a first end that is adapted to be received by a power tool and a second end having a socket for receiving the manipulating section. Once the elongated dental anchor is inserted into a channel formed in the tooth, the manipulating section may be broken off at the frangible, reduced thickness portion without overstressing the tooth. Alternative embodiments provide second and third axially spaced apart reduced thickness portions, wherein the first reduced thickness frangible portion has a thickness greater than the thickness of the second frangible portion and, wherein the second reduced thickness frangible portion has a thickness greater than the third reduced thickness frangible portion. In the embodiments wherein multiple frangible portions are provided, each of the elongated anchoring portions are at least partially threaded and may be successively inserted into several channels formed in the tooth without reloading the dental tool.
REFERENCES:
patent: 656201 (1900-08-01), Meredith
patent: 3675328 (1972-07-01), Weissman
Mancene Louis G.
Yu Mickey
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