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Title
  • en Orientation and deformation of mineral crystals in tooth surfaces
Creator
    • en Fujisaki, Kazuhiro
    • en Todoh, Masahiro
    • en Niida, Atsushi
    • en Shibuya, Ryota
    • en Kitami, Shunsuke
Accessrights open access
Rights
  • en Copyright Elsevier
Subject
  • Other en Biomechanics
  • Other en Tooth enamel
  • Other en Hydroxyapatite
  • Other en X-ray diffraction
  • Other en Crystal orientation
  • Other en Strain
Description
  • Abstract en Tooth enamel is the hardest material in the human body, and it is mainly composed of hydroxyapatite (HAp)-like mineral particles. As HAp has a hexagonal crystal structure, X-ray diffraction methods can be used to analyze the crystal structure of HAp in teeth. Here, the X-ray diffraction method was applied to the surface of tooth enamel to measure the orientation and strain of the HAp crystals. The c-axis of the hexagonal crystal structure of HAp was oriented to the surface perpendicular to the tooth enamel covering the tooth surface. Thus, the strain of HAp at the surface of teeth was measured by X-ray diffraction from the (004) lattice planes aligned along the c-axis. The X-ray strain measurements were conducted on tooth specimens with intact surfaces under loading. Highly accurate strain measurements of the surface of tooth specimens were performed by precise positioning of the X-ray irradiation area during loading. The strains of the (004) lattice plane were measured at several positions on the surface of the specimens under compression along the tooth axis. The strains were obtained as tensile strains at the labial side of incisor tooth specimens. In posterior teeth, the strains were different at different measurement positions, varying from tensile to compressive types.
Publisher en Elsevier
Date
    Issued2012-06
Language
  • eng
Resource Type journal article
Version Type AM
Identifier HDL http://hdl.handle.net/2115/49714
Relation
  • isVersionOf DOI https://doi.org/10.1016/j.jmbbm.2012.02.025
  • PMID 22520429
Journal
    • PISSN 1751-6161
    • NCID AA12344261
      • en Journal of the Mechanical Behavior of Biomedical Materials
      • Volume Number10 Page Start176 Page End182
File
Oaidate 2023-07-26