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IADR Abstract Archives

Effect of Different Cleaning Agent on Bonding Performance to Y-PSZ

Objectives: To evaluate the influence of cleaning methods on bonding performance of self-adhesive resin cements to saliva-contaminated zirconia.
Methods: After saliva contamination, airborne particle-abraded Y-PSZ (partially stabilized zirconia) discs (Zpex Smile, Tosoh) were divided into four groups of cleaning methods (n=20): tap water (HS), Ivoclean (IC), Zirclean (ZC) and 6% NaOCl solution(NC). Alumina-blasted zirconia discs without saliva contamination were used as control group (Con). The pretreated specimens were bonded using a self-adhesive resin cement (Unicem2, 3M-ESPE). Tensile bond strength (TBS) were measured using a universal testing machine at a crosshead speed of 2mm/min after 24 hours (24hr) and thermal cycling at 5°C-55°C for 5,000 cycles (TC5K) then statistically analyzed by parametric survival analysis (Weibull model). Pretesting failures and failure mode were recorded (cohesive/mixed/adhesive).
Results: In 24hr aging condition, Con and ZC groups showed significantly higher TBS than HS,IC and NC groups. In TC5K aging condition, all specimens in HS groups debonded before TBS test. ZC groups showed significantly lower TBS compared to 24hr aging condition.
Conclusions: Cleaning agents can improve bond performance after saliva contamination on Y-PSZ but effect varies on the product.
Division: IADR/AADR/CADR General Session
Meeting: 2019 IADR/AADR/CADR General Session (Vancouver, BC, Canada)
Location: Vancouver, BC, Canada
Year: 2019
Final Presentation ID: 0502
Abstract Category|Abstract Category(s): Dental Materials 4: Adhesion
Authors
  • Youngcharoen, Disapong  ( Tokyo Medical and Dental University , Tokyo , Japan ;  Police General Hospital , Bangkok , Thailand )
  • Takagaki, Tomohiro  ( Tokyo Medical and Dental University , Tokyo , Japan )
  • Takahashi, Akifumi  ( Tokyo Medical and Dental University , Tokyo , Japan )
  • Abdou, Ahmed  ( Tokyo Medical and Dental University , Tokyo , Japan )
  • Nikaido, Toru  ( Asahi University , Gifu , Japan )
  • Tagami, Junji  ( Tokyo Medical and Dental University , Tokyo , Japan )
    • Financial Interest Disclosure: NONE
    SESSION INFORMATION
    Oral Session
    Adhesion to Zirconia and Ceramic
    Thursday, 06/20/2019 , 08:00AM - 09:30AM
    TABLES
    Tensile Bond Strength Results and Weibull Characteristic Strength (95% CI)
    Groupαβ10% Survival
    Con-24hr22.61 (20.22 to 25.30)e4.10 (3.00 to 6.48)13.06
    HS-24hr9.17 (7.72 to 10.89)a2.72 (2.07 to 3.96)4.00
    IC-24hr16.28 (14.46 to 18.33) cd3.90 (2.92 to 5.86)9.15
    ZC-24hr19.96 (17.33 to 22.99)de3.29 (2.48 to 4.89)10.07
    NC-24hr15.65 (13.92 to 17.59)cd3.97 (3.01 to 5.85)8.88
    Con-TC5K17.88 (14.91 to 21.43)cde2.56 (1.92 to 3.84)7.42
    IC-TC5K14.26 (12.58 to 16.16)bc3.71 (2.80 to 5.53)7.78
    ZC-TC5K11.09 (9.64 to 12.75)ab3.31 (2.45 to 5.10)5.62
    NC-TC5K15.09 (12.98 to 17.54)bcd3.07 (2.29 to 4.67)7.26
    Different letter within each column indicates significant difference based on 95% CI. α:the shape, slope, or modulus of Weibull parameter. β:the characteristic scale of Weibull parameter. 10% Survival analysis values.