PROBLEM TO BE SOLVED: To provide a dental device capable of performing operations for performing necessary control without taking a hand off the dental device during a treatment, a control method thereof, and a three-dimensional measuring device. SOLUTION: This is a hand-held dental device based on a housing 10 having a holding portion held by a user, a reception unit 20 provided in the housing and receiving a user's operation, and an operation received by the reception unit. The control unit is provided with a control unit that controls the imaging unit that performs a predetermined operation. When the reception unit accepts a single-click operation, the control unit switches between scan mode and standby mode, and the reception unit performs a double-click operation. If you accept, change the type of dentition. [Selection diagram] Fig. 1【課題】施術中に歯科用機器から手を離すこと無く必要となる制御を行うための操作が可能な歯科用機器、その制御方法、および、三次元計測装置を提供する。【解決手段】手持ち式の歯科用機器であって、ユーザが保持する保持部を有する筐体１０と、筐体に設けられユーザの操作を受け付ける受付部２０と、受付部で受け付けた操作に基づいて所定の動作をする撮像部の制御を行う制御部とを備え、制御部は、受付部でシングルクリック操作を受け付けた場合には、スキャンモードと待機モードとを切り替え、受付部でダブルクリック操作を受け付けた場合には、歯列のタイプを変更する。【選択図】図１
