Micro-shear bond durability to Er:YAG lased dentin

Zhengdi He, Shimada Yasushi, Tagami Junji, Xuejuan Hu, Lingling Chen

Research output: Contribution to journalArticlepeer-review


The purpose of this study was to investigate the micro-shear bond strength of SE Bond to Er:YAG laser irradiated or bur-cut dentin after immersion in water for 24 h, 7 d and 6 months, respectively. Forty dentin slices obtained from twenty extracted human molars were prepared and divided into two groups: twenty specimens for laser group and twenty specimens for bur group. The surfaces of dentin slices of twenty specimens were exposed to pulsed-laser-irradiation. The other twenty specimens were polished by 600-grit silicone paper. Applying SE Bond system, each prepared dentin surface was adhered to eight resin cylinders. The micro-shear bond strength tests were performed after the slices had been immersed in deionized water for 24 h, 7 d and 6 months, respectively. The bond strength results were statistically analyzed using one-way ANOVA and t-test at a significance level of 0.05. The bond strength results of lased dentin after 6-month immersion were significantly lower than those in other groups. The bond strength of SE Bond to Er:YAG lased dentin was significantly decreased in the long term. The conclusion can be used for the improvement in the method of lased dentin adhesive restorations.

Original languageEnglish
Pages (from-to)1-7
Number of pages7
JournalShenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering
Issue number1
Publication statusPublished - Jan 30 2017
Externally publishedYes


  • 2-step self-etching adhesive
  • Bonding
  • Dentin
  • Er:YAG laser
  • Laser application
  • Micro-shear bond strength
  • Resin

ASJC Scopus subject areas

  • Computer Science (miscellaneous)
  • Engineering (miscellaneous)


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