Natural frequency assessment of stability of root keeper magnetic devices

H. M. Huang, D. Z. Liu, Y. Y. Shiau, Ching-Ying Yeh, C. T. Lin, Sheng Yang Lee

研究成果: 雜誌貢獻文章同行評審

5 引文 斯高帕斯(Scopus)

摘要

The aim of the study was to evaluate the potential for using natural frequency (NF) as an indicator for assessing the stability of a magnetic keeper device used in prosthodontic treatment. A three-dimensional finite element (FE) model of a root keeper-cement-dentine system was established for NF analysis. The model was first validated against a series of in vitro experiments. Then, NF values of the first vibrational mode of the FE model with various boundary conditions were calculated. The in vitro results showed that the measured NF values of the root keeper-incisor units decreased significantly (p<0.01) from 9.07±0.37 to 5.73±0.10kHz when the units were embedded in simulated bony tissue. Results obtained from FE simulations demonstrated that the root keeper would fully loosen when the constant values of the spring elements were lower than 104 N-m-1. Furthermore, a linear increase in the NF values of the model was observed from 6.16 to 15.52 kHz, when the constant was increased from 104 to 107 N-m-1, and the values then reached a plateau. The results indicate that the NF value of a root keeper has the potential to be used for monitoring the stability of such a device.
原文英語
頁(從 - 到)388-393
頁數6
期刊Medical and Biological Engineering and Computing
42
發行號3
DOIs
出版狀態已發佈 - 五月 2004

ASJC Scopus subject areas

  • 生物醫學工程
  • 健康資訊學
  • 健康資訊管理
  • 電腦科學應用
  • 計算機理論與數學

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