Evaluation of sub-surface penetration and bonding durability of self-etching primer systems to Er: YAG laser treated cervical dentin

Zhengdi He, Lingling Chen, Yasushi Shimada, Junji Tagami, Shuangchen Ruan

Research output: Contribution to journalArticle

1 Citation (Scopus)


This study aimed to investigate self-etching bonding systems penetrating in sub-surface dentin layer after Er:YAG laser irradiation and micro-shear bonding durability over a period of 1 year. Dentin slices obtained from extracted human third molars were prepared. Two self-etching adhesive systems were evaluated: Clearfil SE Bond and Clearfil Tri-S Bond. Specimens were tested for micro-shear bond strength with one of the following treatments: Er:YAG laser irradiation and 600-grit silicon paper polishing at 24 h, 7 days, 6 months and 1 year. The adhesive interfaces between bonding agents and lased cervical dentin were studied. No hybrid layer could be observed for lased dentin. The slim resin tags could be seen penetrating through the lased subsurface layer. Bond strength to lased dentin after 6 months and 1 year were significantly decreased (p<0.05).

Original languageEnglish
Article numberdmj/2016-216
Pages (from-to)174-181
Number of pages8
JournalDental Materials Journal
Issue number2
Publication statusPublished - 2017
Externally publishedYes



  • Cervical dentin
  • Er:YAG laser
  • Micro-shear bond durability
  • Penetrate

ASJC Scopus subject areas

  • Ceramics and Composites
  • Dentistry(all)

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