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US 8,986,006 B2Granted
Dental obturator
OwnerL. Stephen Buchananinventor
Life of this patent
Estimating the term…
Abstract
Dental obturators are used in the preparation of root canals in teeth. The subject obturators are so constructed that they bind at a particular distance into the canal, thereby precluding possible damage at the end of the canal. The obturator is used for positioning of a sealing material placed on a carrier portion of the obturator into the root canal. Disclosed are a variety of structural configurations on a tapered surface of the carrier portion is disclosed.
Claims9
A dental obturator for inserting filling and sealing material into a previously prepared root canal comprising:
- a rod-like carrier having a fixed-diameter portion joined to a tapered portion at a transition, the tapered portion of the rod-like carrier terminating in a pointed tip;
- two or more projections on an outer surface of the tapered portion, a distal end of at least two projections located at a predetermined same distance back from the tip, said two or more projections being spaced apart around the circumference of the obturator and providing an enlarged tapered portion periphery at said predetermined same distance, said enlarged periphery dimensioned to be insertable in a prepared root canal of a known diameter or taper so as to contact a wall portion within the prepared root canal at a predetermined distance from the root canal terminus.
Dependencies are inferred from the claim text.