Ultrasonic dental tool with wear threshold indicator, wear indicator tool, and method of determining tool wear
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United States of America Patent
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Sep 21, 2021
Grant Date -
Aug 27, 2020
app pub date -
Feb 14, 2020
filing date -
Feb 21, 2019
priority date (Note) -
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Abstract
A dental ultrasonic tool configured to connect to a magnetostrictive or piezoelectric transducer of a dental instrument operating in the frequency range between 18 kHz and 50 kHz. The tool includes a tip and a singular surface marking having a minimum width of 0.5 mm disposed on the tip. The tip includes a distal point as a datum. The singular surface marking is spaced-apart from the distal point of the tip and defines at least one edge. The at least one edge is not coincident with a first flexural node of the tip at an operating frequency of the tip. Dental ultrasonic tip wear measurement tools for measuring the wear on a tip are also provided.
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