IADR Abstract Archives
Bonding Ability of a New Universal Adhesive System
Objectives: BeautiBond (SHOFU INC.) is an all-in-one adhesive for composite-resin (CR) filling restoration with excellent adhesion, operability, and aesthetic properties. While inheriting such properties of BeautiBond, a newly-developed multipurpose adhesive system "SI-R21601 (SI-system)" can be used for both direct and indirect restorations. SI-system consists of all-in-one adhesive (AD), dual-cure activator (DCA), and silane coupling agent. This study aimed to evaluate SI-system’s adhesion in direct and indirect restorations.
Methods: [Direct restoration] Adhesive area of each bovine tooth piece (polished with #600SiC) was defined with a perforated spacer (inner diameter=4mm) and treated with AD by conventional method. A mold placed on the area was filled with composite resin (BEAUTIFILΙΙ, SHOFU INC.) and light-cured.
[Indirect restoration] A mixture of AD and DCA was applied to the bovine tooth surface (polished with #600SiC) and air-dried. Meanwhile, surfaces of zirconia rods (polished, sand-blasted) were treated with ceramic primer (AZ primer, SHOFU INC.) by conventional method. A resin cement (ResiCem, SHOFU INC.) was applied on the treated-rods, which were then placed on the mixture-treated teeth with/without light irradiation.
[SBS measurement] After storage in water (24h, 37°C), the specimens were subjected to shear bond strength testing (universal testing machine: Instron Model 5967), and statistically analyzed (ANOVA, Turkey’s, p<0.05). Scotchbond Universal Adhesive (SU, 3M ESPE) and RelyX Ultimate Adhesive Resin Cement (3M ESPE) were used for comparison.
Results: [Direct restoration] SI-system showed stable and similar adhesion to both enamel and dentin, which was not significantly different from adhesion observed with SU.
[Indirect restoration] When pastes were light-irradiated, no significant differences in SBS were observed between SI-system and SU, whereas SI-system had significantly higher SBS than SU when pastes were not light-irradiated (p<0.05).
Conclusions: SI-system combined with CR or resin cement was confirmed to have stable adhesion to teeth, suggesting that SI-system can be used suitably for both direct and indirect restorations.
Methods: [Direct restoration] Adhesive area of each bovine tooth piece (polished with #600SiC) was defined with a perforated spacer (inner diameter=4mm) and treated with AD by conventional method. A mold placed on the area was filled with composite resin (BEAUTIFILΙΙ, SHOFU INC.) and light-cured.
[Indirect restoration] A mixture of AD and DCA was applied to the bovine tooth surface (polished with #600SiC) and air-dried. Meanwhile, surfaces of zirconia rods (polished, sand-blasted) were treated with ceramic primer (AZ primer, SHOFU INC.) by conventional method. A resin cement (ResiCem, SHOFU INC.) was applied on the treated-rods, which were then placed on the mixture-treated teeth with/without light irradiation.
[SBS measurement] After storage in water (24h, 37°C), the specimens were subjected to shear bond strength testing (universal testing machine: Instron Model 5967), and statistically analyzed (ANOVA, Turkey’s, p<0.05). Scotchbond Universal Adhesive (SU, 3M ESPE) and RelyX Ultimate Adhesive Resin Cement (3M ESPE) were used for comparison.
Results: [Direct restoration] SI-system showed stable and similar adhesion to both enamel and dentin, which was not significantly different from adhesion observed with SU.
[Indirect restoration] When pastes were light-irradiated, no significant differences in SBS were observed between SI-system and SU, whereas SI-system had significantly higher SBS than SU when pastes were not light-irradiated (p<0.05).
Conclusions: SI-system combined with CR or resin cement was confirmed to have stable adhesion to teeth, suggesting that SI-system can be used suitably for both direct and indirect restorations.
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