Relationship between Preferential Alignment of Biological Apatite and Young^|^rsquo;s Modulus at First Molar in Human Mandible Cortical Bone

DOI Web Site 被引用文献4件 参考文献22件
  • Matsumoto Tatsuji
    Division of Oral Implants Research, Oral Health Science Center, Tokyo Dental College Department of Oral and Maxillofacial Implantology, Tokyo Dental College
  • Matsunaga Satoru
    Division of Oral Implants Research, Oral Health Science Center, Tokyo Dental College Department of Anatomy, Tokyo Dental College
  • Morioka Toshiyuki
    Division of Oral Implants Research, Oral Health Science Center, Tokyo Dental College Department of Oral and Maxillofacial Implantology, Tokyo Dental College
  • Nakano Takayoshi
    Division of Materials & Manufacturing Science, Graduate School of Engineering, Osaka University
  • Yoshinari Masao
    Division of Oral Implants Research, Oral Health Science Center, Tokyo Dental College
  • Yajima Yasutomo
    Division of Oral Implants Research, Oral Health Science Center, Tokyo Dental College Department of Oral and Maxillofacial Implantology, Tokyo Dental College

書誌事項

タイトル別名
  • Relationship between Preferential Alignment of Biological Apatite and Young’s Modulus at First Molar in Human Mandible Cortical Bone

この論文をさがす

抄録

Biological apatite (BAp) crystallite c-axis alignment is known to be a factor in the mechanical function of bone. However, reports are lacking on mechanical properties in the alveolar area and base of the mandible area of the human mandible, which has complex occlusal force. In addition, there are many unclear mechanical properties concerning the relationship with BAp crystallite alignment. We therefore aimed to elucidate the relationship between BAp crystallite alignment and Young’s modulus in the alveolar area and base of the mandible area in human mandible cortical bone. The effect of occlusal force on bone quality at first molar in the mandible was also discussed.<br>Mandibular specimens including teeth were obtained from 6 Japanese adult cadavers (mean age: 63.0 ± 12.1 years) housed at the Department of Anatomy, Tokyo Dental College. A microbeam X-ray diffraction system was used to determine BAp crystallite alignment along the mesiodistal direction (longitudinal axis) in each specimen. Young’s modulus was also measured at the same sites along the mesiodistal direction by nanoindentation and its relationship with BAp crystallite alignment examined.<br>BAp crystallite alignment at first molar in human mandible cortical bone was low in the alveolar part but high in the base of mandible. The same tendency was observed for Young’s modulus at the same sites. Furthermore, a positive correlation was recognized between BAp crystallite alignment and Young’s modulus (p < 0.01).<br>The present results showed a close relationship between BAp crystallite alignment and Young’s modulus, suggesting the importance of determining BAp crystallite alignment when evaluating bone strength. Determination of BAp crystallite alignment at first molar in human mandible may be useful in determining the effects of occlusal force.

収録刊行物

被引用文献 (4)*注記

もっと見る

参考文献 (22)*注記

もっと見る

関連プロジェクト

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ