論文

査読有り
2013年10月

Effect of the quantity and quality of cortical bone on the failure force of a miniscrew implant

EUROPEAN JOURNAL OF ORTHODONTICS
  • Masahiro Iijima
  • ,
  • Masamitsu Takano
  • ,
  • Yoshitaka Yasuda
  • ,
  • Takeshi Muguruma
  • ,
  • Susumu Nakagaki
  • ,
  • Yasunori Sakakura
  • ,
  • Morio Ochi
  • ,
  • Itaru Mizoguchi

35
5
開始ページ
583
終了ページ
589
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1093/ejo/cjs066
出版者・発行元
OXFORD UNIV PRESS

This study examined the influence of the quantity and quality of cortical bone on the failure force of miniscrew implants. Twenty-six titanium alloy miniscrew implants (AbsoAnchor) 1.4 mm in diameter and 5 or 7 mm long were placed in cross-sectioned maxillae (n = 6) and mandibles (n = 20) of human cadavers. Computed tomography imaging was used to estimate the cortical bone thickness and bone mineral density [total bone mineral density (TBMD, values obtained from cortical bone plus trabecular bone); cortical bone mineral density (CBMD, values obtained from only cortical bone)]. Maximum force at failure was measured in a shear test. Nanoindentation tests were performed to measure the hardness and elastic modulus of cortical bone around the miniscrew implants. The mean failure force of miniscrew implants placed in mandibles was significantly greater than that for implants in maxillae, and the bone hardness of mandibles was significantly greater than that of maxillae. The length of miniscrew implants did not influence the mean failure force in monocortical placement in the mandible. Cortical bone thickness, TBMD, CBMD, and bone hardness were significantly related to the mean failure force. CBMD was related to the mechanical properties of cortical bone. In conclusion, the quantity and quality of cortical bone greatly influenced the failure force of miniscrew implants.

Web of Science ® 被引用回数 : 15

リンク情報
DOI
https://doi.org/10.1093/ejo/cjs066
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/23041933
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000325103700006&DestApp=WOS_CPL