Dental Materials
Volume 23, Issue 4 , Pages 410-414, April 2007

Improving the initial biocompatibility of a titanium surface using an Er,Cr:YSGG laser-powered hydrokinetic system

  • Her-Hsiung Huang

      Affiliations

    • Faculty of Dentistry, School of Dentistry, National Yang-Ming University, Taipei 112, Taiwan
  • ,
  • Yu-Chiao Chuang

      Affiliations

    • Institute of Oral Materials Science, Chung Shan Medical University, Taichung 402, Taiwan
  • ,
  • Zhi-Hwa Chen

      Affiliations

    • School of Medical Laboratory and Biotechnology, Chung Shan Medical University, Taichung 402, Taiwan
  • ,
  • Tien-Ling Lee

      Affiliations

    • Institute of Stomatology, Chung Shan Medical University, Taichung 402, Taiwan
  • ,
  • Chun-Cheng Chen

      Affiliations

    • Department of Dentistry, Chung Shan Medical University Hospital, Taichung 402, Taiwan
    • Corresponding Author InformationCorresponding author at: Department of Dentistry, Chung Shan Medical University Hospital, No. 110, Sec.1, Chien-Kuo North Road, Taichung 402, Taiwan. Tel.: +886 4 2471 8668x55011; fax: +886 4 2475 9065.

Received 26 May 2005; accepted 8 February 2006.

Abstract 

Objectives

This study was designed to improve the initial biocompatibility of titanium (Ti) using an Er,Cr:YSGG-powered hydrokinetic system.

Methods

The Er,Cr:YSGG-powered hydrokinetic system with different laser energy densities, 125 and 190J/cm2, were applied to the Ti substrate. Human osteosarcoma U2-OS cells were used. The difference in the attached cell number between 3- and 1-days cell culture was calculated and defined as the initial cell proliferation index (CPI). The initial CPI was statistically analyzed using one-way analysis of variance with the factor of applied laser energy density. The surface spreading morphology of the attached cells after 1 day incubation was observed using a field-emission scanning electron microscope.

Results

The Er,Cr:YSGG laser-treated Ti had a higher (1.2–1.3 times) initial CPI (P<0.001) and better cell spreading morphology than the untreated Ti. Treating the Ti with higher Er,Cr:YSGG laser energy did not significantly improve the CPI and cell spreading morphology.

Significance

The initial biocompatibility of the Ti surface could be improved using an Er,Cr:YSGG laser-powered hydrokinetic system.

Keywords: Er,Cr:YSGG laser, Titanium, Cell proliferation, Cell spreading, Biocompatibility

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PII: S0109-5641(06)00053-4

doi:10.1016/j.dental.2006.02.012

Dental Materials
Volume 23, Issue 4 , Pages 410-414, April 2007