Southern Implants (pty) Ltd

Leith Carruthers Cumming

Graham Alan Blackbeard

Heather Madeleine Coombes

A dental implant includes a generally cylindrical body, an interior bore, and a non-rotational feature. The generally cylindrical body has a main-central axis and is formed from cold-worked, high strength, commercially pure titanium having an ultimate tensile strength of at least about 900 MPa. The generally cylindrical body has a proximal portion and an opposing distal portion for anchoring the dental implant in bone of a patient. The interior bore is formed in the generally cylindrical body and has (i) a bore-central axis and (ii) a threaded portion for receiving a screw that is configured to removable hold an abutment in engagement with the dental implant. The non-rotational feature is configured to engage the abutment in a non-rotational fashion.

Angulated dental implant

The invention concerns a dental implant assembly including an implant component () which is engaged in use with a bone structure and which has an internally threaded socket (). The assembly also includes a dental component (), typically an abutment, crown or prosthetic tooth, which seats on the implant component and which has a passage () through its base (). The dental component is clamped to the implant component by a prosthetic retaining screw () having a head () and a shank () which passes through the passage and is screwed into the socket of the implant component. The invention is characterized in that a separate washer () including a low friction polymeric material is located rotatably on the shank of the screw adjacent the screw head in order to reduce friction between the head of the screw and the base of the dental component when the screw is tightened up.

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Centurion, South Africa

Leith Carruthers Cumming