Dental Materials
Volume 23, Issue 4 , Pages 450-453, April 2007

Piezoelectric properties of human dentin and some influencing factors

  • Ting Wang

      Affiliations

    • Department of Materials Science and Engineering, Xiamen University, Xiamen 361005, China
    • ,
  • Zude Feng

      Affiliations

    • Department of Materials Science and Engineering, Xiamen University, Xiamen 361005, China
    • Research Center for Biomedical Engineering, Xiamen University, Xiamen 361005, China
    • Corresponding Author InformationCorresponding author. Tel.: +86 592 218 1538; fax: +86 592 218 3937.
    • ,
  • Yuxing Song

      Affiliations

    • Department of Materials Science and Engineering, Xiamen University, Xiamen 361005, China
    • ,
  • Xiaoling Chen

      Affiliations

    • Xiamen Stomatological Hospital, Xiamen 361005, China

Received 29 September 2005; accepted 28 February 2006.

Abstract 

Objectives

The present study focused on the piezoelectricity of human dentin. The effects of moisture content and orientation of tubules were investigated.

Methods

Fresh human dentin was cut with two surfaces generally parallel to the occlusal surface. The potentials generated by specimens were detected, as the compression loads were respectively parallel and vertical to the tubules. Moreover, specimens were dried and rehydrated; piezoelectric coefficients d33 of dentin with different moisture content were measured horizontally to, and vertically to, the tubules.

Results

The results showed that piezoelectricity of dentin increased with increasing moisture content. Furthermore, greater piezoelectricity was detected parallel to the tubules than vertical to the tubules.

Significances

This study indicated that the piezoelectric properties of dentin were significantly affected by both humidity and orientation of the tubules. Both structural and free water in dentin is attributed to its piezoelectric properties.

Keywords: Piezoelectricity, Dentin, Orientation, Moisture content

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PII: S0109-5641(06)00076-5

doi:10.1016/j.dental.2006.02.016

Dental Materials
Volume 23, Issue 4 , Pages 450-453, April 2007

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