Journal of Dental Sciences
Volume 4, Issue 2 , Pages 81-86, June 2009

Effects of periodontal bone loss on the natural frequency of the human canine: a three-dimensional finite element analysis

  • Li-Kuo Shen

      Affiliations

    • Department of Radiology, Taipei Medical University Hospital, Taipei, Taiwan
    • ,
  • Haw-Ming Huang

      Affiliations

    • Graduate Institute of Biomedical Materials and Engineering, Taipei Medical University, Taipei, Taiwan
    • Co-first author
    • ,
  • Jun-Jea Yu

      Affiliations

    • School of Dentistry, Taipei Medical University, Taipei, Taiwan
    • ,
  • Sheng-Yang Lee

      Affiliations

    • School of Dentistry, Taipei Medical University, Taipei, Taiwan
    • ,
  • Chih-Ming Lee

      Affiliations

    • Department of Radiology, Taipei Medical University Hospital, Taipei, Taiwan
    • ,
  • Sung-Chih Hsieh

      Affiliations

    • School of Dentistry, Taipei Medical University, Taipei, Taiwan
    • Corresponding Author InformationCorresponding author. School of Dentistry, Taipei Medical University, 250, Wu-Hsing Street, Taipei 11042, Taiwan

Received 18 February 2009; accepted 23 May 2009.

Article Outline

Background/Purpose

Assessing periodontal conditions has always been a concern for dental researchers. In this study, we evaluated the potential of a natural frequency (NF) analysis to detect the health status of natural human canine teeth.

Materials and methods

Three-dimensional finite element models of the human maxillary canine were constructed. NF values of the canine model were calculated with one-, two- and three-sided vertical bone loss.

Results

By simulating a modal testing experiment, the NF value for a healthy canine was found to be 2581 Hz. As the bone level was lowered, a strong linear relationship between the frequency and attachment level was demonstrated in all three models. Results from this study demonstrated that the change in the NF was < 12% in canines with a one-sided defect when the bone level varied by 10 mm from the cementoenamel junction. However, when a three-sided bony defect was simulated, the change in NF ranged from 20% to 60%.

Conclusion

This study demonstrates that the NF of the human canine decreases with various degrees of periodontal bone height loss.

KEY WORDS:  alveolar bone , finite element , natural frequency , periodontal ligament , stability

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PII: S1991-7902(09)60012-X

doi:10.1016/S1991-7902(09)60012-X

Journal of Dental Sciences
Volume 4, Issue 2 , Pages 81-86, June 2009

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