IADR Abstract Archives
Compatibility of OptiBond eXTRa Universal with Various Dental Substrates
Objectives: A new universal adhesive system OptiBond eXTRa Universal (Kerr) was recently introduced to the market. The objective of this study was to evaluate the compatibility of OptiBond eXTRa Universal/NX3 cementation system with various dental substrates (listed in the table) and compare with several commercial cementation systems: Scotchbond Universal / RelyX Ultimate (3M), Prime&Bond Elect / Calibra Ceram (Dentsply), Monobond Plus / Variolink Esthetic DC (Ivoclar), and Clearfil SE Bond 2 / Panavia V5 (Kuraray).
Methods: All substrates were polished with 600 grit SiC paper and subsequently air-abraded with Al2O3 particles. For e.max CAD and porcelain, the surface was further etched with HF acid (CREAM-ETCH). Each cement was bonded to the prepared substrate’s surface with an adhesive per IFU. After adhesive application (self-cured), a bonding jig (Ultradent Products, Inc) with a cylindrical mold (D=2.38mm) was securely placed on the adhesive coated substrate surface. Each cement was condensed into the mold and allowed to self-cure. The specimens (n=6) were stored under 85~90% relative humidity at 37°C for 1 hour and then in DI-water for 24 hours before being subjected to shear force on an Instron mechanical tester following ISO 29022. Statistical analysis was conducted using One-way ANOVA and Tukey’s method for pair-wise comparison to determine significant differences among groups (p<0.05).
Results: For each substrate, OptiBond eXTRa Universal/NX3 yielded the highest average bond strength among all the cementation systems tested in this study. All cementation systems produced SBS to each substrate that were not statistically different from each other with the exception of Scotchbond Universal/RelyX Ultimate which produced SBS that was statistically (p<0.05) lower than all the other systems.
Conclusions: OptiBond eXTRa Universal/NX3 cementation system exhibited excellent compatibility with all dental substrates tested in this study and yielded the highest average SBS to each substrate among all tested cementation systems.
Methods: All substrates were polished with 600 grit SiC paper and subsequently air-abraded with Al2O3 particles. For e.max CAD and porcelain, the surface was further etched with HF acid (CREAM-ETCH). Each cement was bonded to the prepared substrate’s surface with an adhesive per IFU. After adhesive application (self-cured), a bonding jig (Ultradent Products, Inc) with a cylindrical mold (D=2.38mm) was securely placed on the adhesive coated substrate surface. Each cement was condensed into the mold and allowed to self-cure. The specimens (n=6) were stored under 85~90% relative humidity at 37°C for 1 hour and then in DI-water for 24 hours before being subjected to shear force on an Instron mechanical tester following ISO 29022. Statistical analysis was conducted using One-way ANOVA and Tukey’s method for pair-wise comparison to determine significant differences among groups (p<0.05).
Results: For each substrate, OptiBond eXTRa Universal/NX3 yielded the highest average bond strength among all the cementation systems tested in this study. All cementation systems produced SBS to each substrate that were not statistically different from each other with the exception of Scotchbond Universal/RelyX Ultimate which produced SBS that was statistically (p<0.05) lower than all the other systems.
Conclusions: OptiBond eXTRa Universal/NX3 cementation system exhibited excellent compatibility with all dental substrates tested in this study and yielded the highest average SBS to each substrate among all tested cementation systems.