A Numerical Study on Performance of Dental Air Turbine Handpieces
Keywords:dental handpiece, high speed air turbine, CFD
In the present work, the original dental air turbine handpieces were disassembled and their parts were modeled using reverse engineering. Then, simulation of dental cartridge was performed and the effect of different parameters was investigated. In dental air turbines, the flow channel and blade shape have major influence on the torque, rotating speed, and power performance. This research is focused on the turbine impeller and flow channel diameter. For this aim, three types of dental cartridges with different blades, nozzle diameter and the gap size between air turbine and casing were analyzed. The effect of air inlet pressure on torque, total force, air density and temperature distribution were investigated using computational fluid dynamic (CFD) simulation and related graphs were extracted. The results showed the turbine impeller designs including impeller diameter and blade shape can have major impacts on the torque and performance.