DENTAL IMPLANTS

摘要

A dental implant, including a generally cylindrical body having a proximal open end and a distal closed end and an externally threaded surface, a socket extending distally from the proximal end and terminating at a proximally facing shoulder and an internally threaded hole extending distally from the proximally facing shoulder and a curved portion formed between the proximally facing shoulder and the internally threaded wall.

主权项

1. A dental implant having a generally cylindrical body and a bore extending distally along a longitudinal axis into the body from a proximal end of the body;
the bore having a bore wall defining:
a socket region,an internally threaded hole distal to and radially inset from the wall of socket region, andan interface portion between the socket region and the internally threaded hole; wherein a shape of the interface portion comprises a change in angle from an orientation at a proximal side of the interface portion to an orientation at a distal side of the interface portion; wherein the change in angle is distributed along the longitudinal axis and within a longitudinal plane containing the longitudinal axis; and wherein the extent of the distribution is sufficient to reduce stress concentration for prevention of primary stress failure at a region of wall between the socket region and the externally threaded surface.