Numerical Analysis on Performance of Dental Air Turbine Handpiece for Various Reflection Angles of Turbine Rotor

터빈 로터 반사각에 따른 의료용 에어터빈 핸드피스의 성능에 관한 수치 해석

Dental high-speed air turbine handpieces have been used as a dental cutting tool in clinical dentistry for over 50 years, yet little study has been reported on their flow and performance analysis. Therefore it is necessary to investigate turbine for the performance improvements of an air turbine handpiece. This paper presents pressure on turbine rotor and flow analysis in air turbine handpiece using CFD (computational fluid dynamics). Characteristics on each flow and pressure for four various reflection angles of turbine rotor are presented, and then performance change is analyzed about air turbine handpieces by CFD results.