Patent ID: 9192450
Filing Date: 2015-11-24
Classification: A61C

Abstract:
1. A dental treating apparatus comprising: a head unit having a holder configured for drivably holding a cutting tool; a hand piece body connected to said head unit for transmitting power to drive said holder; and a controller configured for controlling the driving of said holder, said dental treating apparatus further comprising: wherein said connection failure detector comprises a waveform obtainer, wherein said waveform obtainer obtains a signal waveform via said holder as a response to said input signal, wherein said connection failure detector detects said connection failure based on a change of signal waveform obtained by said waveform obtainer, and wherein said connection failure detector is configured to store accumulated driven time for driving said cutting tool after said contact members are exchanged and detects a connection failure of said contact members based on a response to said input signal obtained via said cutting tool when said stored accumulated driven time is greater than or equal to a predetermined period.