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Influence of cement thickness on resin-zirconia microtensile bond strength

  • Lee, Tae-Hoon (Department of Prothodontics, Gangnam Severance Dental Hospital, College of Dentistry, Yonsei University) ;
  • Ahn, Jin-Soo (Department of Dental Biomaterials Science, Graduate School, Seoul National University) ;
  • Shim, June-Sung (Department of Prosthodontics, Yonsei University Dental Hospital, College of Dentistry, Yonsei University) ;
  • Han, Chong-Hyun (Department of Prothodontics, Gangnam Severance Dental Hospital, College of Dentistry, Yonsei University) ;
  • Kim, Sun-Jai (Department of Prothodontics, Gangnam Severance Dental Hospital, College of Dentistry, Yonsei University)
  • 투고 : 2011.03.11
  • 심사 : 2011.06.09
  • 발행 : 2011.09.30

초록

PURPOSE. The aim of this study was to evaluate the influence of resin cement thickness on the microtensile bond strength between zirconium-oxide ceramic and resin cement. MATERIALS AND METHODS. Thirty-two freshly extracted molars were transversely sectioned at the deep dentin level and bonded to air-abraded zirconium oxide ceramic disks. The specimens were divided into 8 groups based on the experimental conditions (cement type: Rely X UniCem or Panavia F 2.0, cement thickness: 40 or 160 ${\mu}m$, storage: thermocycled or not). They were cut into microbeams and stored in $37^{\circ}C$ distilled water for 24 h. Microbeams of non-thermocycled specimens were submitted to a microtensile test, whereas those of thermocycled groups were thermally cycled for 18,000 times immediately before the microtensile test. Three-way ANOVA and Sheffe's post hoc tests were used for statistical analysis (${\alpha}$=95%). RESULTS. All failures occurred at the resin-zirconia interface. Thermocycled groups showed lower microtensile bond strength than non-thermocycled groups (P<.001). Differences in cement thickness did not influence the resin-zirconia microtensile bond strength given the same resin cement or storage conditions (P>.05). The number of adhesive failures increased after thermocycling in all experimental conditions. No cohesive failure was observed in any experimental group. CONCLUSION. When resin cements of adhesive monomers are applied over air-abraded zirconia restorations, the degree of fit does not influence the resin-zirconia microtensile bond strength.

키워드

참고문헌

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피인용 문헌

  1. Bonding between oxide ceramics and adhesive cement systems: A systematic review vol.102, pp.2, 2013, https://doi.org/10.1002/jbm.b.33013
  2. Fatigue Behavior of the Resinous Cement to Zirconia Bond vol.22, pp.7, 2013, https://doi.org/10.1111/jopr.12053
  3. Effect of resin cement selection on the microtensile bond strength of adhesively veneered 3Y-TZP vol.71, pp.5, 2013, https://doi.org/10.3109/00016357.2012.749516
  4. Effect of Different Cleaning Regimens on the Adhesion of Resin to Saliva-Contaminated Ceramics vol.24, pp.2, 2015, https://doi.org/10.1111/jopr.12170
  5. Effect of resin cement color on the color of commercially available zirconia crown vol.45, pp.4, 2011, https://doi.org/10.14815/kjdm.2018.45.4.233