The present research aims at studying the dynamic behavior of the abutment teeth of a dental phantom supporting a fixed metal-polymeric and porcelain-fused-to-metal partial denture. Simulation of a clinical situation was created using a Frasacotypodont on which the 2 teeth were positioned first freely then fixed with a siliconic material, which resulted in different damping and elastic constants. In the in vitro created cases, a laser Doppler vibrometer (LDV) was used as a scientific instrument for non contact vibration measurements of the surface of abutment teeth. The laser beam from LDV was directed to the surface of interest, and the vibration amplitude and frequency were extracted from the Doppler shift of the reflected laser beam frequency, due to the surface motion. The output of LDV was a continuous analogue voltage, directly proportional to the target velocity component along the direction of the laser beam.
Keywords:- Doppler effect.
- periodontal support
- vibration amplitude
- vibration frequency
- vibrometer