Impact response of periodontal tissues

Hisao Oka, T. Yamamoto, T. Kawazoe, K. Saratani, Y. Hikida

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

A new impact response method using a fracture of a pencil-lead to produce an excitation pulse is proposed. Impact excitations (rectangular pulse, triangular pulse and half-sine pulse) are strictly given in physical and mathematical definitions and complete solutions to the impact excitations are provided for Noyes' model of the human tooth. When a relatively long triangular pulse is applied to Noyes' model, which can express the physical characteristic of periodontal tissues, a sinusoidal damped vibration of a single degree-of-freedom model is approximately obtained. The acceleration response is characterised by the physical parameters (T, δ and Ao) and mechanical elements (m1, c1 and k) of which a single degree-of-freedom model is composed. By means of this method, the values of the parameters and elements in the cases of healthy maxillary, healthy mandibular and pathological mandibular incisors are obtained. The single degree-of-freedom model can express the high-frequency spectra of Noyes' model. The pathological tooth is characterised by a longer damped time constant and a larger acceleration maximum. This impact response method can effectively be applied to clinical diagnosis in view of the physical parameters and mechanical elements which have been derived.

Original languageEnglish
Pages (from-to)260-266
Number of pages7
JournalMedical & Biological Engineering & Computing
Volume26
Issue number3
DOIs
Publication statusPublished - May 1988

Fingerprint

Tissue
Tooth
Incisor
Vibration
Degrees of freedom (mechanics)

Keywords

  • Acceleration response
  • Impact response
  • Mechanical impedance
  • Periodontal tissues
  • Single degree-of-freedom model
  • Tooth mobility

ASJC Scopus subject areas

  • Health Information Management
  • Health Informatics
  • Biomedical Engineering
  • Computer Science Applications
  • Computational Theory and Mathematics

Cite this

Oka, H., Yamamoto, T., Kawazoe, T., Saratani, K., & Hikida, Y. (1988). Impact response of periodontal tissues. Medical & Biological Engineering & Computing, 26(3), 260-266. https://doi.org/10.1007/BF02447078

Impact response of periodontal tissues. / Oka, Hisao; Yamamoto, T.; Kawazoe, T.; Saratani, K.; Hikida, Y.

In: Medical & Biological Engineering & Computing, Vol. 26, No. 3, 05.1988, p. 260-266.

Research output: Contribution to journalArticle

Oka, H, Yamamoto, T, Kawazoe, T, Saratani, K & Hikida, Y 1988, 'Impact response of periodontal tissues', Medical & Biological Engineering & Computing, vol. 26, no. 3, pp. 260-266. https://doi.org/10.1007/BF02447078
Oka, Hisao ; Yamamoto, T. ; Kawazoe, T. ; Saratani, K. ; Hikida, Y. / Impact response of periodontal tissues. In: Medical & Biological Engineering & Computing. 1988 ; Vol. 26, No. 3. pp. 260-266.
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