Bone Tap
A surgical instrument used to cut threads into dense cortical bone prior to implant insertion, reducing insertion torque and minimising the risk of implant fracture in high-density bone.
Full Definition
A bone tap (or cortical tap) is a threaded instrument that mirrors the macro-geometry of the implant and is used to pre-cut the thread pattern into the osteotomy walls in dense bone (typically Lekholm & Zarb Type I or II). By reducing resistance during insertion, it helps avoid excessive torque that could fracture the implant or cause heat-related bone damage. The use of a bone tap is typically indicated in the manufacturer's drilling protocol and documented in the operative report. Editors should note that 'bone tap' is always two words and should not be hyphenated unless used as a compound modifier. It is distinct from an 'osteotome,' which is a non-cutting compressive instrument.
Usage
Usage note: Write as two words ('bone tap') in noun form. Hyphenate only as a compound modifier: 'bone-tap procedure'. Do not confuse with an osteotome, which compresses rather than cuts bone.
In Context
- "Given the high bone density in the anterior mandible, a bone tap was used prior to implant insertion to prevent overpressure." — Operative notes
- "The article described a 'bone tap' in one section and a 'thread tap' in another; the editor standardised the terminology throughout." — Manuscript copy-editing note