The present invention provides an apparatus for correcting the three-dimensional space angle of a drill for a dental hand piece that has no measurement equipment such as a reference body for tracking or an additional camera and is not limited in use by surrounding environments. The apparatus for correcting the three-dimensional space angle of a drill for a dental hand piece according to the present invention is an apparatus for correcting the three-dimensional space angle of a drill for a dental hand piece that corrects the three-dimensional space angle of a drill blade of a dental hand piece with respect to a patient&prime；s tooth structure, including a housing that is provided in a fixed portion of the dental hand piece； a first sensing unit that measures the angle of the housing in real time； a second sending unit that measures the angle of the patient&prime；s head or jaw in real time； a calculation unit that primarily corrects the angle measured by the first sensing unit into the angle of the drill blade and secondarily corrects the primarily corrected angle of the drill blade in real time into an angle correction value of the drill blade with respect to the tooth structure in view of the angle measured by the second sensing unit so as to calculate the three-dimensional space angle of the drill blade； a setting unit that sets the reference three-dimensional space angle of the drill blade with respect to the tooth structure to a three-dimensional space angle desired by an operator among the three-dimensional space angles of the calculation unit； and a display unit that displays a warning message when the three-dimensional space angle of the calculation unit is out of a setting range for the reference three-dimensional space angle.COPYRIGHT KIPO 2015본 발명은 추적(tracking)을 위한 기준 몸체(reference body)나, 부가적인 카메라 등의 측정장비가 없으면서 주변 환경에 의해 사용이 제한되지 않는 치과 핸드피스용 드릴의 3차원 공간적 각도의 보정 장치를 제공하는 것이 그 기술적 과제이다. 이를 위해, 본 발명의 치과 핸드피스용 드릴의 3차원 공간적 각도의 보정 장치는, 환자의 치아 구조물에 대한 치과 핸드피스의 드릴
