Multi-taper dental root canal filling points/cones and process of making same
OwnerNathan Y. LI, DaQing WUinventors
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Abstract
The present invention provides an improved root canal filling point/cone having a structure that can be manufactured precisely to result in better obturation with less micro-leakage. One aspect of the present invention is directed to a molded root canal filling point having progressively decreasing tapers from the smaller tip end to the larger end. Another aspect of the present invention is directed to a thermo-pressure molding process for manufacturing root canal filling appliances (e.g., Gutta Percha points). A further aspect of the present invention is directed to the structure of the mold for undertaking thermo-injection molding.
Claims12
A cone for a dental root canal filling, comprising:
- a body having a generally axisymmetric conical structure, wherein at least a section along the body has a tapered structure, and wherein the tapered structure has different tapers along the axial direction, varying progressively to define a multi-taper conical structure.
A method of making a plurality of cones for dental root canal fillings, each having the structure recited in any of the foregoing claims, the method comprising;
- providing a mold having a plurality of cavities defined in the mold corresponding to the shape of the cones;
- injecting material into the cavities in the mold;
- and
- molding the cones each having a body comprising the injected material.
Dependencies are inferred from the claim text.