Dentistry – Prosthodontics – Holding or positioning denture in mouth
Reexamination Certificate
2005-02-01
2005-02-01
O'Connor, Cary E. (Department: 3732)
Dentistry
Prosthodontics
Holding or positioning denture in mouth
C433S174000, C411S403000
Reexamination Certificate
active
06848907
ABSTRACT:
A screw for dental implants, used to fix dental prostheses to abutments combined with fixtures previously inserted in the alveolar bone, includes a screw portion and a screw-head portion. The screw-head portion includes a pair of inclined planes on either side of a center line, wherein the inclined planes form a V-character shape when seen from the side along a center line, each forming at a predetermined angle with respect to a plane perpendicular to the axis of the screw and a tool-receiver, formed between the inclined planes along a center line crossing an upper face of the screw, for transmitting working torque exerted by a tool. A screw set for dental implants includes a plurality of dental-implant screws, each having a screw portion and a screw-head portion of varying height, and each screw-head portion includes the same combination of guide and tool-receiver. The improved screw facilitates tightening and untightening of the screw.
REFERENCES:
patent: 391097 (1888-10-01), Thayer
patent: 3604305 (1971-09-01), Dreger
patent: 4790753 (1988-12-01), Fradera
patent: 5358368 (1994-10-01), Conlan et al.
patent: 5407359 (1995-04-01), Balfour et al.
patent: 5439380 (1995-08-01), Marlin
patent: 6364664 (2002-02-01), Watanabe
patent: 20030053887 (2003-03-01), Brooks
An article entitled “Custom-made Cover Screws to Fit . . . ”, by Howell, Jr., et al., published By The Journal of Prosthetic Dentistry, Aug. 1997, vol. 78, pp. 209-211.
An article entitled “Preventing Loosening of Implant Abutment Screws”, By Cavazos, Jr., et al., published by The Journal of Prosthetic Dentistry, (1996), vol. 75, No. 5, pp. 566-569.
Bachman & LaPointe P.C.
O'Connor Cary E.
Osstem Implant Co., Ltd.
LandOfFree
Screw for dental implants does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Screw for dental implants, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Screw for dental implants will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3487775