| 摘要 |
FIELD: medicine; stomatology. ^ SUBSTANCE: dental lock fixture consists of cylindrical case and entering shutoff rod. Rod is made of fixing metal and is furnished with support arm and oval-shaped concave running end. Pressed rod body contains spring rested on curled area in case. Fixture is nonseparable. Outside surface of case if furnished with retention thread. ^ EFFECT: long-term reliability and serviceability. ^ 1 dwg, 1 ex |
