A Comparative Study of the Effects of Dentinal Bonding Agents and Application Techniques on Marginal Gaps in Class V Cavities

Zidan, Omar; Gómez-Marı́n, Orlando; Tsuchiya, Tomoyuki

doi:10.1177/00220345870660030201

Cited by 48 publications

(15 citation statements)

References 8 publications

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“…The marginal seal is one of the most important factors influencing the success of a restoration. 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) .…”

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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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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“…The results of this study were comparable to previous studies in which significantly less leakage in Class V cavities was not found when filled adhesive was applied. [23][24] In contrast, several authors have reported encouraging results in reducing microleakage with the use of flowable composite restorative materials. [25][26] This is probably due to a relatively small C-factor (approximately 1.3); polymerization contraction stress might not exceed the bond strength of filled and unfilled adhesive resin, regardless of the composite used.…”

Section: Discussionmentioning

confidence: 99%

Effect of Elastic Cavity Wall and Occlusal Loading on Microleakage and Dentin Bond Strength

Pongprueksa

Kuphasuk²,

Senawongse³

2007

Operative Dentistry

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SUMMARYObjective: This study evaluated the effect of an unfilled-adhesive resin (Adper Single Bond) and a filled-adhesive resin (Adper Single Bond 2) with and without a low viscosity resin (Filtek Flow) as an elastic cavity wall on marginal leakage and dentin microtensile bond strength in Class V composite restorations under unloaded and loaded conditions. Methods: V-shaped cavities were prepared on the buccal surfaces of 56 premolars lined with unfilled (Groups 1 and 3) or filled (Groups 2 and 4) adhesives with (Groups 3 and 4) and without (Groups 1 and 2) a low viscosity resin and restored with a resin composite. The restored teeth in each group were divided into two subgroups for unloaded and loaded conditions with 50N loading force for 250,000 cycles parallel to the long-axis of the tooth. Five specimens from each group were cut bucco-lingually 0.7 mm thick and subjected to a dye leakage test for four hours using 2% methylene blue dye. The tested specimens were then trimmed into dumbbell shapes at the gingival margin and subjected to microtensile testing. The remaining two specimens were cut, embedded and observed for resin/dentin interfaces under a scanning electron microscope.Results: For the microleakage test, there were no significant differences in microleakage among the groups on both the enamel and dentin margin. No statistically significant differences were found between microleakage of the loaded and unloaded groups on enamel margins for all materials. There were statistically significant differ-P Pongprueksa • W Kuphasuk • P Senawongse Clinical RelevanceThe application of filled adhesive or low viscosity resin as an elastic cavity wall had no influence on marginal leakage both at the enamel and dentin margin; however, the application had an influence on increasing the microtensile bond strength to dentin of Class V restorations. Occlusal loading significantly increased the degree of marginal leakage at the dentin margin. ences between microleakage of the loaded and unloaded groups on the dentin margin for Groups 3 and 4. For the microtensile test, the significant difference was found between Groups 1 and 4 for the unloaded groups. For the loaded groups, there were no significant differences between Groups 1 and 2 and Groups 3 and 4. There were no statistically significant differences in microtensile bond strength between the loaded and unloaded groups except for Group 2.Conclusion: The application of filled adhesive or low viscosity resin had no influence on marginal leakage at both the enamel and dentin margin but it had an influence on the microtensile bond strength to dentin of Class V restorations. Occlusal loading significantly increased the degree of marginal leakage at the dentin margin when low viscosity was applied in combination with either unfilled or filled-adhesives, but it decreased dentin bond strength in the group treated with only filled adhesive.

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“…Many studies on the effect of incremental placement techniques on marginal sealing and adaptation have been performed [59][60][61][62][63][64]. However, these results are debatable/dubious because the application techniques [59,60,63], adhesive systems [59][60][61][62], resin composites [60] and cavity forms [64] had an influence on the effectiveness of the placement techniques.…”

Section: The Effect Of Placement Techniquesmentioning

confidence: 99%

Challenges to the clinical placement and evaluation of adhesively-bonded, cervical composite restorations

Kubo

Yokota

et al. 2013

Dental Materials

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Objectives: The incidence of non-carious cervical lesions (NCCLs) has been increasing.The clinical performance of resin composites in NCCLS was previously unsatisfactory due to their non-retentive forms and margins lying on dentin. In order to address this problem, a lot of effort has been put into developing new dentin adhesives and restorative techniques. This article discusses these challenges and the criteria used for evaluating clinical performance as they relate to clinical studies, especially long-term clinical trials. Polymerization contraction, thermal changes and occlusal forces generate debonding stresses at adhesive interfaces.Methods: In laboratory studies, we have investigated how these stresses can be relieved by various restorative techniques and how bond strength and durability can be enhanced. Lesion forms, restorative techniques, adhesives (adhesive strategies, bond strengths, bond durability, and the relationship between enamel and dentin bond strengths) were found to have a complex relationship with microleakage. With regard to some restorative techniques, only several short-term clinical studies were available.

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A Comparative Study of the Effects of Dentinal Bonding Agents and Application Techniques on Marginal Gaps in Class V Cavities

Cited by 48 publications

References 8 publications

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

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

Effect of Elastic Cavity Wall and Occlusal Loading on Microleakage and Dentin Bond Strength

Challenges to the clinical placement and evaluation of adhesively-bonded, cervical composite restorations

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