Relationship between the load-displacement curve and deformation distribution in porcine mandibular periodontium

Yasuyuki Morita, Masakazu Uchino, Mitsugu Todo, Yasuyuki Matsushita, Kazuo Arakawa, Kiyoshi Koyano

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A porcine mandible was separated to prepare thin periodontium specimens, consisting of a molar, periodontal ligament (PDL), and alveolar bone. Occlusion was simulated by applying a forced compressive displacement, using a table-top material tester. We photographed images of the displacing periodontium specimen and simultaneously obtained the load-displacement curve during the test. The displacement and deformation distributions were examined using digital image correlation analysis. Then, we correlated the distribution with the load-displacement curve, which was characterized by biphasic behavior, as noted in many previous studies. We found that the displacement and deformation distributions of actual periodontium correlated with the load-displacement curve during dental occlusion. Regarding the biphasic characteristics of the load-displacement curve, we showed experimentally that the first phase indicated deformation of the PDL and the second indicated deformation of the alveolar bone and tooth.

Original languageEnglish
Pages (from-to)336-344
Number of pages9
JournalJournal of Biomechanical Science and Engineering
Volume4
Issue number3
DOIs
Publication statusPublished - Sep 29 2009

All Science Journal Classification (ASJC) codes

  • Biomedical Engineering

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