Dentistry – Apparatus – Broach
Patent
1997-11-18
1999-11-02
Wilson, John J.
Dentistry
Apparatus
Broach
A61C 502
Patent
active
059758996
ABSTRACT:
The present invention relates to a dental reamer (2) which tapers right down to its tip (1), of the type including helical slits which, on their sides, have cutting lips for boring out dental canals, in which the characteristics of the cutting conditions are defined by, on the one hand, a cutting angle .alpha. determined by the tangent to the cutting edge at the cutting point and the perpendicular to the surface to be cut at this point and, on the other hand, a clearance angle .beta. determined by the plane of the cutting surface and the tangent to the inactive face of the cutting edge, characterized in that the value of the cutting angle .alpha. is greater than or equal to zero and that of the clearance angle .beta. is greater than zero.
REFERENCES:
patent: 5647745 (1997-07-01), Badoz
Badoz Jean-Marie
Calas Paul
Euvrard Hubert
Vulcain Jean-Marie
Micro-Mega International Manufactures
Wilson John J.
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