Effect of Phosphoric Acid Etching of Enamel Margins on the Microleakage of a Simplified All-in-One and a Self-etch Adhesive System

Khosravi, K; Ataei, Ebrahim; Mousavi, M; Khodaeian, Niloufar

doi:10.2341/08-026-l

Cited by 29 publications

(24 citation statements)

References 23 publications

(31 reference statements)

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“…[31] Khosravi et al . [32] also concluded that simplified all-in-one adhesive systems need pre-etching of the enamel margins with phosphoric acid for an effective seal. Therefore, the null hypothesis that prior acid etching did not affect the microleakage was rejected.…”

Section: Discussionmentioning

confidence: 99%

In vitro bonding effectiveness of self-etch adhesives with different application techniques: A microleakage and scanning electron microscopic study

2011

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Aim:To evaluate and compare the microleakage of self-etch adhesives placed under different clinical techniques and to analyze the resin–dentin interfacial ultrastructure under scanning electron microscope (SEM).Materials and Methods:100 extracted human premolars were divided into two groups for different adhesives (Clearfil S3 and Xeno III). Class V cavities were prepared. Each group was further divided into four subgroups (n = 10) according to the placement technique of the adhesive, i.e. according to manufacturer's directions (Group 1), with phosphoric acid etching of enamel margins (Group 2), with hydrophobic resin coat application (Group 3), with techniques of both groups 2 and 3 (Group 4). The cavities were restored with composite. Ten samples from each group were subjected to microleakage study. Five samples each of both the adhesives from groups 1 and 3 were used for SEM examination of the micromorphology of the resin–dentin interface.Results:At enamel margins for both the adhesives tested, groups 2 and 4 showed significantly lesser leakage than groups 1 and 3. At dentin margins, groups 3 and 4 depicted significantly reduced leakage than groups 1 and 2 for Xeno III. SEM observation of the resin–dentin interfaces revealed generalized gap and poor resin tag formation in both the adhesives. Xeno III showed better interfacial adaptation when additional hydrophobic resin coat was applied.Conclusions:In enamel, prior phosphoric acid etching reduces microleakage of self-etch adhesives, while in dentin, hydrophobic resin coating over one-step self-etch adhesives decreases the microleakage.

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Section: Discussionmentioning

confidence: 99%

In vitro bonding effectiveness of self-etch adhesives with different application techniques: A microleakage and scanning electron microscopic study

2011

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“…Therefore, enamel pre-etching with phosphoric acid is recommended to improve adhesion. 20 Limited evidence is available regarding microleakage with the use of the HEMA-based adhesives One Coat 7.0 and Optibond All-In-One. HEMA improves the miscibility of hydrophobic and hydrophilic adhesive components.…”

Section: Discussionmentioning

confidence: 99%

Marginal microleakage of class V resin-based composite restorations bonded with six one-step self-etch systems

et al. 2013

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This study compared the microleakage of class V restorations bonded with various one-step self-etching adhesives. Seventy class V resin-based composite restorations were prepared on the buccal and lingual surfaces of 35 premolars, by using: Clearfil S 3 Bond, G-Bond, iBond, One Coat 7.0, OptiBond All-In-One, or Xeno IV. The Adper Single Bond etch-and-rinse two-step adhesive was employed as a control. Specimens were thermocycled for 500 cycles in separate water baths at 5°C and 55°C and loaded under 40 to 70 N for 50,000 cycles. Marginal microleakage was measured based on the penetration of a tracer agent. Although the control showed no microleakage at the enamel margins, there were no differences between groups (p = 0.06). None of the adhesives avoided microleakage at the dentin margins, and they displayed similar performances (p = 0.76). When both margins were compared, iBond  presented higher microleakage (p < 0.05) at the enamel margins (median, 1.00; Q 3 -Q 1 , 1.25-0.00) compared to the dentin margins (median, 0.00; Q 3 -Q 1 , 0.25-0.00). The study adhesives showed similar abilities to seal the margins of class V restorations, except for iBond  , which presented lower performance at the enamel margin.

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“…Many studies have shown that bonding of restorative materials to enamel with total-etching adhesive systems is adequate to resist contraction stress [29][30][31] . Thus, several studies have demonstrated more microleakage at the enamel margin when self-etching adhesive systems were used 32,33) . Low amounts of microleakage occurring along the enamel margins were shown.…”

Section: Discussionmentioning

confidence: 99%

The effect of the elastic modulus of low-viscosity resins on the microleakage of Class V resin composite restorations under occlusal loading

2010

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This study aimed to evaluate the effectiveness of various intermediate layers on the microleakage of Class V restorations under an occlusal load. Wedge-shaped cavities were prepared on the buccal surface of 72 extracted premolars, which were then treated with an adhesive system (One Up Bond F Plus), divided into three groups, and restored with: 1) Estelite Sigma resin composite, 2) a resin composite with Low Flow flowable composite, or 3) a resin composite with High Flow flowable composite. The specimens were subjected to a nano-indentation test to evaluate the elastic modulus of successive layers at the resin-dentine interface and were subjected to a microleakage test under either unloaded or loaded conditions. The elastic moduli were significantly different among substrates (p<0.05), except between the hybrid layer/Low Flow and the hybrid layer/High Flow. The elastic moduli of the Low Flow composite were higher than those of the High Flow composite. Occlusal force increased dentine leakage in the group that was restored without flowable composites.

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Effect of Phosphoric Acid Etching of Enamel Margins on the Microleakage of a Simplified All-in-One and a Self-etch Adhesive System

Cited by 29 publications

References 23 publications

In vitro bonding effectiveness of self-etch adhesives with different application techniques: A microleakage and scanning electron microscopic study

In vitro bonding effectiveness of self-etch adhesives with different application techniques: A microleakage and scanning electron microscopic study

Marginal microleakage of class V resin-based composite restorations bonded with six one-step self-etch systems

The effect of the elastic modulus of low-viscosity resins on the microleakage of Class V resin composite restorations under occlusal loading

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