Effect of different provisional cement remnant cleaning procedures including Er:YAG laser on shear bond strength of ceramics

Zortuk M. , GÜMÜŞ H. Ö. , Kilinc H. I. , Tuncdemir A. R.

JOURNAL OF ADVANCED PROSTHODONTICS, cilt.4, ss.192-196, 2012 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Cilt numarası: 4 Konu: 4
  • Basım Tarihi: 2012
  • Doi Numarası: 10.4047/jap.2012.4.4.192
  • Sayfa Sayıları: ss.192-196


PURPOSE. The purpose of this study was to evaluate the effect of provisional cement removal by different dentin cleaning protocols (dental explorer, pumice, cleaning bur, Er:YAG laser) on the shear bond strength between ceramic and dentin. MATERIALS AND METHODS. In total, 36 caries-free unrestored human third molars were selected as tooth specimens. Provisional restorations were fabricated and cemented with eugenol-free provisional cement. Then, disc-shaped ceramic specimens were fabricated and randomly assigned to four groups of dentin cleaning protocols (n = 9). Group 1 (control): Provisional cements were mechanically removed with a dental explorer. Group 2: The dentin surfaces were treated with a cleaning brush with pumice Group 3: The dentin surfaces were treated with a cleaning bur. Group 4: The provisional cements were removed by an Er:YAG laser. Self-adhesive luting cement was used to bond ceramic discs to dentin surfaces. Shear bond strength (SBS) was measured using a universal testing machine at a 0.05 mm/min crosshead speed. The data were analyzed using a Kolmogorov Smirnov, One-way ANOVA and Tukey HSD tests to perform multiple comparisons (alpha=0.05). RESULTS. The dentin cleaning methods did not significantly affect the SBS of ceramic discs to dentin as follows: dental explorer, pumice, cleaning bur, and Er:YAG laser. CONCLUSION. The use of different cleaning protocols did not affect the SBS between dentin and ceramic surfaces. [J Adv Prosthodont 2012;4:192-6]