发明名称 Endodontic drill-file
摘要 This invention is an improvement in endodontic drills used by dentists specializing in root canal dentistry. Present endodontic practice in the preparation, cleaning, and shaping of root canals in teeth entails the use of inefficient steel drills. The present invention provides a diamond coated drill and file combined of a design that assures an extremely smooth canal surface to facilitate the cleaning and sealing of the root canal.
申请公布号 US4190958(A) 申请公布日期 1980.03.04
申请号 US19780870109 申请日期 1978.01.17
申请人 MARTIN, HOWARD;NORRIS, JAMES P 发明人 MARTIN, HOWARD;NORRIS, JAMES P
分类号 A61C3/02;A61C5/02;(IPC1-7):A61C5/02 主分类号 A61C3/02
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