Dental burr and dental handpiece
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 11, 1991
Grant Date -
N/A
app pub date -
Dec 21, 1988
filing date -
Dec 19, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A dental burr has an axis of rotation and a cooling water passage extending therethrough in coaxial relation to the dental burr. The cooling water passage opens to a front end face of the dental burr, and this opening in the front end of the dental burr is disposed in an area including the axis of rotation of the dental burr. A dental handpiece for rotatably holding a dental burr includes a handgrip portion, a hollow head portion provided at a front end of the handgrip portion, and a cooling water passage. This cooling water passage extends along the handgrip portion,and opens at one end to a rear end of the handgrip portion while the other end thereof is connected to an internal space of the head portion. Part of the internal space serves as a passage for communicating the cooling water passage of the dental handpiece with the cooling water passage of the dental burr held by the dental handpiece.
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