한국정밀공학회지 (Journal of the Korean Society for Precision Engineering)

  • 제27권4호
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  • Pages.87-94
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  • 2010
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  • 1225-9071(pISSN)
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  • 2287-8769(eISSN)
한국정밀공학회 (Korean Society for Precision Engineering)
권호 표지

치아파절시험과 유한요소해석에서의 치경 변형률에 관한 연구

Comparison of Strain on Dental Cervical Line between Tooth Fracture Test and Finite Element Analysis

  • 유의식 (한국생산기술연구원 실버기술개발단) ;
  • 전경진 (한국생산기술연구원 실버기술개발단)
  • Yoo, Oui-Sik (Gerontechnology Center, Korea Institute of Industrial Technology) ;
  • Chun, Keyoung-Jin (Gerontechnology Center, Korea Institute of Industrial Technology)
  • 투고 : 2009.07.10
  • 심사 : 2010.02.11
  • 발행 : 2010.04.01
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초록

When occlusal force is applied to a tooth, stress concentration occurs on the dental cervical line. This study investigated to find the maximum force and strain of natural teeth using an Instron and strain gauges, comparing the strain of cervical enamel using finite element analysis(FEA). Tests were conducted with a mandibular first premolar applying the conditions of occlusion. Then, the FEA was processed with the same as conditions of the fracture test. The test showed that the maximum force, maximum compressive strain and maximum tensional strain was $278{\pm}26$ N, $0.668{\times}10^{-3}{\pm}0.678{\times}10^{-3}$ and $0.248{\times}10^{-3}{\pm}0.102{\times}10^{-3}$, respectively. It was found that six of eight measured strains were within the range of estimated strains by the FEA. Even though it was assumed that properties of FE models were isotropic, it could prove useful as a reference in understanding the tendency of dental strain.

키워드

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