Nd:YAG laser irradiation of the tooth root surface inhibits demineralization and root surface softening caused by minocycline application

Tomohisa Watanabe, Mitsuo Fukuda, Akio Mitani, Chun Chan Ting, Kazuhiro Osawa, Ayako Nagahara, Sohta Satoh, Takeki Fujimura, Shinko Takahashi, Yuki Iwamura, Taeko Murakami, Toshihide Noguchi

研究成果: Article

3 引文 斯高帕斯(Scopus)

摘要

Objective: The aim of this study was to investigate the effect of laser irradiation on root surface demineralization caused by local drug delivery systems (DDS), and to evaluate the effect of sealing on drug retention. Background data: The duration of supportive periodontal treatment (SPT) has increased with increasing life expectancy. Repeated root planing and DDS application during SPT should be reconsidered with regard to their effects on the root surface. Methods: Extracted human teeth were collected, cut into 3×3×2 mm root dentin specimens, and divided randomly into eight groups with various combinations of Nd:YAG laser power (0, 0.5, 1, and 2 W), with and without DDS (minocycline HCl). Specimen microhardness and calcium (Ca) solubility were measured after treatment. The specimens (control and laser and DDS groups) were examined by scanning electron microscopy. Forty SPT patients were recruited, to assess the effect of periodontal pocket sealing on drug retention. Results: Laser irradiation increased the microhardness of root specimens in an energy-dependent manner. Calcium solubilities decreased from the 0 W+DDS group to the 2.0 W+DDS group. The mean Ca solubilities in the 1.0 W+DDS and 2.0 W+DDS groups were significantly lower than in the 0 W+DDS group (p<0.01, p<0.001, respectively). Laser irradiation counteracted the softening effect of DDS. Morphologic change was observed in the 2W+DDS group; however, no morphologic changes were observed in the control and the 1W+DDS groups. The mean concentration of minocycline in the periodontal pocket 24 h after application was 252.79±67.50 μg/mL.Conclusions: Laser irradiation of the root surface inhibited the softening and decalcification caused by minocycline HCl. Sealing the periodontal pockets effectively improved drug retention. These results suggest that the combination of laser irradiation and DDS could benefit patients receiving repeated SPT.

原文English
頁(從 - 到)571-577
頁數7
期刊Photomedicine and Laser Surgery
31
發行號12
DOIs
出版狀態Published - 2013 十二月 1

All Science Journal Classification (ASJC) codes

  • Biomedical Engineering
  • Radiology Nuclear Medicine and imaging

指紋 深入研究「Nd:YAG laser irradiation of the tooth root surface inhibits demineralization and root surface softening caused by minocycline application」主題。共同形成了獨特的指紋。

  • 引用此

    Watanabe, T., Fukuda, M., Mitani, A., Ting, C. C., Osawa, K., Nagahara, A., Satoh, S., Fujimura, T., Takahashi, S., Iwamura, Y., Murakami, T., & Noguchi, T. (2013). Nd:YAG laser irradiation of the tooth root surface inhibits demineralization and root surface softening caused by minocycline application. Photomedicine and Laser Surgery, 31(12), 571-577. https://doi.org/10.1089/pho.2013.3561