Endosseous dental implant system for overdenture retention, crown and bridge support

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4431416
SERIAL NO

06372945

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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One part of the implant comprises a rigid screw anchor of substantially uniform diameter. The anchor has intermediate peripheral threads to engage the bone tissue at a prepared recess. The lower end of the anchor is hollow, peripherally perforated and open at the end to surround a bone core projecting from the bottom of the prepared recess. The upper end of the anchor has a relatively deep wrench socket for rotation of the anchor and for reception of a companion pillar part. The pillar part is made of slightly flexible plastic material that can approximate a prepared tooth to serve as a single tooth replacement or as a support for a fixed bridge. Optionally, the pillar can provide a platform that forms or mounts one of two companion elements of a connector structure such as for overdenture retention. The anchor can be altered in length not only at the bottom, but also at the top, without changing the manner in which the anchor cooperates with the later placed pillar.

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First Claim

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Family

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Patent Owner(s)

Patent OwnerAddress
CENTERPULSE DENTAL INC1900 ASTON AVENUE CARLSBAD CA 92008

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Niznick, Gerald A Encino, CA 40 2890

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