Dentistry – Prosthodontics – Holding or positioning denture in mouth
Patent
1988-02-03
1988-12-13
Peshock, Robert
Dentistry
Prosthodontics
Holding or positioning denture in mouth
A61C 800
Patent
active
047907533
ABSTRACT:
A screw for dental implants formed by a single main body of metal, has at the tapered bottom end thereof a central cavity extending axially up to a certain relatively small depth. The tapered bottom end merges into a long cylindrical portion provided along the whole length thereof with an outer screwthread and connected with a frustoconical portion followed by a base-column having a low height and a polygonal cross section forming the upper end of the screw. A relatively deep axial bore with a portion provided with an internal screwthread is formed in the upper end of the screw. The screwhead or starts at close to the edge of the outlet orifice and extends over the major portion of the length thereof. A non-threaded end portion terminates in the blind bottom of the said bore.
REFERENCES:
patent: 2112007 (1938-03-01), Adams
Peshock Robert
Striker Michael J.
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