Bond performance of “Touch and Cure” adhesives on resin core systems

Kadowaki, Yoshitaka; Kakuda, Shinichi; Katsumata, Akitoshi; Ting, Shihchun; Hoshika, Shuichi; Ikeda, Takatsumi; Tanaka, Toru; Carvalho, R M; Sano, Hidehiko

doi:10.4012/dmj.2015-330

Cited by 14 publications

(8 citation statements)

References 25 publications

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“…Previous studies revealed that moisture can adversely affect the bond strength of one-step selfetch adhesives 36) to dentin, so we presume that faster polymerization in the light-curing mode could prevent this effect. The present result corroborates previous studies which found significantly lower micro-tensile bond strength of touch-curing adhesives to dentin in the absence of light-irradiation 21,37) , and indicates that lightcuring is indispensable for obtaining a sufficient bonding performance to dentin.…”

Section: Discussionsupporting

confidence: 92%

“…On the other hand, some products incorporate initiators which allow for chemical polymerization after contact with a corresponding dual-cure resin cement even without the use of an activator. Such systems are also called "touch and cure" or "contact cure" and they can improve the bond strength in situations where light irradiation may be insufficient 21) .…”

Section: Introductionmentioning

confidence: 99%

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The effect of curing mode of dual-cure resin cements on bonding performance of universal adhesives to enamel, dentin and various restorative materials

et al. 2021

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The effect of curing mode of dual-cure resin cements on the tensile bond strength (TBS) of universal adhesives to enamel, dentin, zirconia, lithium disilicate ceramics (LDS), feldspathic porcelain (FP), and a Pd-Au alloy was evaluated. The substrates were bonded using Tokuyama Universal Bond (TUB) or Scotchbond Universal Adhesive (SBU), followed by luting with Estecem II (ECII) or Rely-X Ultimate (RXU), respectively, which were used either in light-curing or self-curing mode. The TBS test was performed after 24 h or 5,000 thermal cycles. Light-curing significantly improved the 24-h TBS of TUB/ECII to enamel, dentin and FP, as well as the TBS of SBU/RXU to all substrates except LDS. After thermal cycling, light-curing significantly increased the TBS of both adhesives/cements to dentin, but significant differences between curing modes were seldom observed for other substrates. This suggested that lightcuring is essential for the hydrophilic dentin, but self-curing might be sufficient for other substrates.

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Section: Discussionsupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

The effect of curing mode of dual-cure resin cements on bonding performance of universal adhesives to enamel, dentin and various restorative materials

et al. 2021

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“…However, we found that the effect of touch-curing between the resin cement and the universal adhesive on the μTBS was limited, because the μTBS in the NL (D)NL(CR) group was significantly lower than that of the L(D)L(CR) group. A previous study using resin core systems in combination with a corresponding touch-curing adhesive, also reported higher bond strengths to root canal dentin when using light-curing of the adhesives 18) . Therefore, the "direct" light irradiation of adhesives was more effective for improving μTBS of resin cement than only a touch-curing chemical polymerization reaction between the universal adhesive and resin cement.…”

Section: Discussionmentioning

confidence: 72%

The strategies used for curing universal adhesives affect the micro-bond strength of resin cement used to lute indirect resin composites to human dentin

et al. 2018

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We evaluated the effect of different curing strategies for universal adhesives on micro-tensile bond strength (μTBS) between resin cement and dentin and/or between resin cement and indirect resin composite. Flat coronal dentin surfaces and composite resin disks were pretreated with silane-containing universal adhesives, with or without light-curing on the dentin-side and/or composite resin disk-side. Resin disks were luted onto the pretreated dentin surfaces with the corresponding dual-cure adhesive resin cements and light-cured, and cut into beams after 24-h water storage. After 0 or 10,000 thermocycles (5ºC/55ºC) in a water bath, the μTBS of the composite resin disk-dentin beam was tested. The μTBS was highest when universal adhesives were applied to both the dentin- and the indirect composite resin disk-side, followed by light-curing. Thermocycling decreased μTBS in all but the Scotchbond Universaltreated group, with light-curing on both sides. The effect of curing strategies is dependent upon the materials.

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“…To mediate the adhesion of dual-cured core build-up composite materials with dental hard tissues, dual-cured adhesives have been introduced containing aryl sulphinate or aryl borate salts, which exert a synergic activation effect in contact with the composite and are known as a touch-cure activators [9]. This activation mode improves the degree of the C=C conversion of the etch and rinse adhesives in comparison with their light-cured analogues [10].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Touch-Cure Polymerization on the Conversion and Hardness of Core Build-Up Resin Composites: A Laboratory Study

et al. 2021

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To improve the self-curing capacity and interfacial strength with dentine of dual-cured composite materials, touch-cure activators have been introduced. The aim of the study was to evaluate the effect of these activators on the hardness and conversion of dual-cured resin composite core build-up restoratives. The materials tested were Clearfil DC Core Plus (CF) and Gradia Core (GC) with the corresponding adhesives Clearfil S3 Bond Plus (for CF) and G-Premio Bond/G-Premio DCA activator (for GC). Disk-shaped specimens (n = 6/group) were prepared for the following groups: dual-cured, self-cured and self-cured in contact with the adhesive activators at the bottom surface. After a 3-week storage period (dark/dry/37 °C) the Martens hardness (HM) and degree of conversion (DC%) were determined for the previously mentioned groups and the top surfaces of groups in contact with the adhesives. A statistical analysis was performed by a one-way ANOVA and Holm–Sidak test per material and a Pearson’s correlation analysis (HM vs. DC%) at an α = 0.05. The self-cured specimens resulted in significantly lower HM and DC% values from the dual-cured group, as expected. However, in the presence of the adhesives with touch-cure activators, the conversion of the self-cured groups showed insignificant differences in HM and DC% from the dual-cured in both composite materials. The improvements on the bottom composite surfaces in contact with the adhesives did not extend to the entire specimen length. Nevertheless, improved interfacial curing may improve interfacial durability.

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Bond performance of “Touch and Cure” adhesives on resin core systems

Cited by 14 publications

References 25 publications

The effect of curing mode of dual-cure resin cements on bonding performance of universal adhesives to enamel, dentin and various restorative materials

The effect of curing mode of dual-cure resin cements on bonding performance of universal adhesives to enamel, dentin and various restorative materials

The strategies used for curing universal adhesives affect the micro-bond strength of resin cement used to lute indirect resin composites to human dentin

The Effect of Touch-Cure Polymerization on the Conversion and Hardness of Core Build-Up Resin Composites: A Laboratory Study

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