| 摘要 |
<p>A new pin for oral implantoprosthesis is described which can be constructed in various forms, but in all cases is characterised by comprising two separate elements which are fitted together at the moment of the endo-osseous implantation. The pin when in its assembled form is characterised by comprising in its endo-osseous part two frusto-conical segments, namely an upwardly flared upper segment which provides for the retention of the pin in the compact bone region, and a downwardly flared lower segment which provides for retention of the pin in the cancellous bone region.</p> |
