A piezoelectric ultrasonic bone surgical instrument, usually used to remove the tartar out of teeth or to cut the dentine of the tooth, is a recently popular instrument for dental treatment due to its several merits such as small size, low-electric power and precision control of surgical operation. It has typically two parts of a tip and vibration system which is also composed of head, piezoelectric elements and tail-mass. In order to improve the performance of the instrument, it is important to standardize the size of the vibration system without tip for high performance. In this study, a Finite Element Analysis (FEA) was utilized to optimize the structure of ultrasonic instrument in vibration system. Consequently, this study revealed that influence of several tips on property were minimized and it showed good property at the frequency range of 22∼32 kHz.

Citations

• A Study on Temperature Changes during Bone Scaling and Cutting of Dental Ultrasonic Scaling/Surgery System
  Min-Woo Sa, Tae-Jo Ko, Jong Young Kim
  Journal of the Korean Society of Manufacturing Process Engineers.2020; 19(2): 1.     CrossRef
• A comparative study on the user satisfaction between two different piezoelectric engines
  Hyun-Mi Lim, Kyu-Bok Lee, Wan-Sun Lee, So-Young Choi
  Journal of Dental Rehabilitation and Applied Science.2017; 33(4): 269.     CrossRef
• Development of Handpiece Moving System (HMS) for Cutting Performance Evaluation of Dental Ultrasonic Surgery Unit
  Min-Woo Sa, Hae-Ri Shim, Tae-Jo Ko, Jong-Min Lee, Jong Young Kim
  Journal of the Korean Society for Precision Engineering.2016; 33(5): 377.     CrossRef
• Evaluation and Design of Ultrasonic Vibrator for Dental Surgery
  Ki-Moon Park, Jung-Hyun Kim, Tae Jo Ko
  Journal of the Korean Society of Manufacturing Process Engineers.2016; 15(3): 102.     CrossRef

The osseointegration of dental implant is influenced by many factors such as surface geometry, loading and the amount of bone. Thus, stability of the dental implant should be checked periodically. In order to test the stability of dental implant by using resonance frequency analysis, we designed a structure of transducers and fabricated a piezoelectric devices. Using finite element analysis, the thickness and length of piezoelectric device and transducers were tailorized and the optimized frequency of 10 kHz was obtained. The resonance frequency from simulation analysis and evaluation was estimated to be similar as 10 kHz. The osseointegration was further enhanced with increasing frequency from the evaluation result of the finite element analysis.