Measurement of mechanical strain on mandibular surface with mastication robot: Influence of muscle loading direction and magnitude

T. Usui, K. Maki, Y. Toki, Y. Shibasaki, H. Takanobu, A. Takanishi, D. Hatcher, A. Miller

研究成果: Article

13 引用 (Scopus)

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Objectives: To investigate the mechanical effects of mastication on the mandible, we developed computational controlled mastication robot system with human dry skull and analyzed the strain distribution on the mandibular bone surface. Design: In the mastication robot, the mandible was suspended by eight wires, which simulated masticatory muscles. A non-linear spring damper generated viscoelastic properties, and tension sensors for simulation of jaw reflection to avoid unusual biting force were applied as a biological feedback mechanism. By using this robot system, various patterns of muscle loading (change of wire direction and magnitude) were performed. Results: From the results, significant differences in the amount of principal strain and its distribution were demonstrated in each condition (ANOVA, post hoc test, and p < 0.05). The value of maximum principal strain ranged from 79.66 . 10-6 [at anterior border of ramus (Buccal side), 128 N] to )1.42 . 10-6 [at foramen mentale (Buccal side), 32 N]. Conclusion - These results suggested that the muscle loading generated the mechanical strain on the mandibular bone surface and it was affected by the changes in loading direction and magnitude.

元の言語English
ページ(範囲)163-167
ページ数5
ジャーナルOrthodontics and Craniofacial Research
6
発行部数SUPPL1
DOI
出版物ステータスPublished - 2003 12 1

ASJC Scopus subject areas

  • Orthodontics
  • Surgery
  • Oral Surgery
  • Otorhinolaryngology

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