Lasers in Medical Science

, Volume 30, Issue 2, pp 653–659 | Cite as

Effect of different mechanical and chemical surface treatments on the repaired bond strength of an indirect composite resin

  • Soodabeh Kimyai
  • Siavash Savadi Oskoee
  • Narmin Mohammadi
  • Sahand Rikhtegaran
  • Mahmoud Bahari
  • Parnian Alizadeh Oskoee
  • Hafez Vahedpour
Original Article


This study compared the effects of two mechanical surface preparation techniques, air abrasion and Nd:YAG laser, with the use of two adhesive systems, self-etch and etch and rinse, on the repair bond strengths of an indirect composite resin. One hundred fifty cylindrical samples of an indirect composite resin were prepared and randomly divided into six groups (n = 25). In groups 1–3, the composite resin surfaces were respectively prepared as follows: no roughening, roughening by air abrasion, and roughening by Nd:YAG laser, followed by application of an etch-and-rinse adhesive. In groups 4–6, the preparation techniques were respectively the same as those in groups 1–3, followed by application of a self-etch adhesive. Subsequently, a direct composite resin was added and repair bond strengths were measured. Data were analyzed with two-way ANOVA and post hoc Tukey's test. Mean bond strength value was significant based on the preparation technique (P < 0.001), i.e., in air abrasion and Nd:YAG laser groups, bond strengths were significantly higher compared to no-preparation groups (P < 0.0005). There were significant differences in bond strength values between air abrasion and Nd:YAG laser groups, with significantly higher values in air abrasion groups (P < 0.0005). However, there were no significant differences in bond strength values between the adhesive systems. Furthermore, the cumulative effects of the adhesive system and the surface preparation technique were not significant. Surface preparation of the indirect composite resin with air abrasion and Nd:YAG laser resulted in a significant increase in the repair bond strength, with air abrasion being more effective. There were no significant differences in bond strength between the two adhesives.


Air abrasion Bond strength Indirect composite resin Nd:YAG laser Repair Surface treatment 



The authors extend their gratitude to the Vice Chancellor for Research at Tabriz University of Medical Sciences for their financial support. Furthermore, the authors would like to thank Dr. Majid Abdolrahimi (D.D.S.), who edited the English language of this article and Dr. M. R. Naimi-Jamal for carrying out the AFM imaging procedures.


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Copyright information

© Springer-Verlag London 2013

Authors and Affiliations

  • Soodabeh Kimyai
    • 1
  • Siavash Savadi Oskoee
    • 1
  • Narmin Mohammadi
    • 2
  • Sahand Rikhtegaran
    • 2
  • Mahmoud Bahari
    • 1
  • Parnian Alizadeh Oskoee
    • 2
  • Hafez Vahedpour
    • 2
  1. 1.Dental and Periodontal Research Center, School of DentistryTabriz University of Medical SciencesTabrizIran
  2. 2.Department of Operative Dentistry, School of DentistryTabriz University of Medical SciencesTabrizIran

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