PROBLEM TO BE SOLVED: To prevent a risk of necrosis and injury to a treated region caused by an operators carelessness (by no injection of cooling water) by giving the alarm or stopping driving of an instrument resecting a tooth when the amount of water remaining in a water tank is reduced to a prescribed (reference) amount or lower.SOLUTION: An odontotherapy apparatus includes: a tooth cutting instrument 40 and a water tank 20 for storing cooling water for cooling a tooth-cutting place by the instrument 40. The cooling water is fed to a tooth cutting place to cool the tooth cutting place during tooth cutting treatment. The odontotherapy apparatus also includes a water amount detection means 22 for electrically detecting the amount of water within the water tank 20, and alarming means 31-33 for giving the alarm when the amount of water within the water tank 20 is reduced to a prescribed reference amount or lower.COPYRIGHT: (C)2014,JPO&INPIT【課題】水タンク内の残存水量が所定(基準)量以下に低下したときに警報を発し、或いは、歯牙切除中のインスツルメントの駆動を停止するようにし、術者の不注意による(冷却水不注入による)、治療部位の壊死や損傷の恐れを未然に防ぐ。【解決手段】歯牙切削用のインスツルメント40、及び、該インスツルメント40による歯牙切削箇所を冷却する冷却水を貯蔵する水タンク20を有し、歯牙切削治療中、歯牙切削箇所に前記冷却水を供給して該歯牙切削箇所を冷却する。前記水タンク20内の水量を電気的に検知する水量検知手段22と、前記水タンク20内の水量が所定基準量以下に低下したときに警報を発生する警報手段31~33とを有する。【選択図】図1
