Lasers in Medical Science

, Volume 28, Issue 1, pp 139–142 | Cite as

The effect of erbium family laser on tensile bond strength of composite to dentin in comparison with conventional method

  • Sima Shahabi
  • Nasim ChiniforushEmail author
  • Hoda Bahramian
  • Abbas Monzavi
  • Ali Baghalian
  • Mohammad Javad Kharazifard
Original Article


The purpose of this study was to evaluate the effect of Er:YAG and Er,Cr:YSGG laser on tensile bond strength of composite resin to dentine in comparison with bur-prepared cavities. Fifteen extracted caries-free human third molars were selected. The teeth were cut at a level below the occlusal pit and fissure plan and randomly divided into three groups. Five cavities were prepared by diamond bur, five cavities prepared by Er:YAG laser, and the other group prepared by Er,Cr:YSGG laser. Then, all the cavities were restored by composite resin. The teeth were sectioned longitudinally with Isomet and the specimens prepared in dumbbelled shape (n = 36). The samples were attached to special jigs, and the tensile bond strength of the three groups was measured by universal testing machine at a speed of 0.5 mm/min. The results of the three groups were analyzed with one-way ANOVA and Tamhane test. The means and standard deviations of tensile bond strength of bur-cut, Er:YAG laser-ablated, and Er,Cr:YSGG laser-ablated dentine were 5.04 ± 0.93, 13.37 ± 3.87, and 4.85 ± 0.93 MPa, respectively. There is little difference in tensile bond strength of composite resin in Er,Cr:YSGG lased-prepared cavities in comparison with bur-prepared cavities, but the Er:YAG laser group showed higher bond strength than the other groups.


Er:YAG laser Resin composite Tensile bond strength 


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Copyright information

© Springer-Verlag London Ltd 2012

Authors and Affiliations

  • Sima Shahabi
    • 1
  • Nasim Chiniforush
    • 2
    Email author
  • Hoda Bahramian
    • 4
  • Abbas Monzavi
    • 3
  • Ali Baghalian
    • 4
  • Mohammad Javad Kharazifard
    • 4
  1. 1.Laser Research Center of Dentistry (LRCD), Dental Materials DepartmentTehran University of Medical SciencesTehranIran
  2. 2.Laser Research Center of Dentistry (LRCD)Tehran University of Medical SciencesTehranIran
  3. 3.Laser Research Center of Dentistry (LRCD), Prosthodontic DepartmentTehran University of Medical SciencesTehranIran
  4. 4.Tehran University of Medical SciencesTehranIran

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