| 摘要 |
<p>Motor-driven bone crest expander-compacter (1) whose geometry and dimensions have been redesigned to optimal values that allow the expander- compacter (1) to be used for bone expansion or compaction in rear areas of the patient's mouth. The expander-compacter (1) presents a threaded body (3) with a cylindrical threaded area (5) and a conical threaded area (6), where the cylindrical threaded area (5) presents a length smaller than two-thirds the length of the conical threaded area (6), in addition to the fact that the total length of the threaded body (3) is less than 12 mm. The invention also refers to a connector (7) connecting the expander-compacter (1) to a surgical motor, and to an initial burr (11), both of them equally optimised.</p> |
