Comparison of Microleakage of Class V Cavities restored with the Embrace WetBond Class V Composite Resin and Conventional Opallis Composite Resin

Abstract

Purpose: This study was undertaken to compare the microleakage of class V cavities restored with the newly introduced Embrace WetBond class V (EWC) composite resin and conventional Opallis composite resin. Materials and methods:In this in vitro study, class V cavities were prepared on 30 extracted bovine incisors, with the gingival floor and the coronal margin of the cavities 1 mm apical and coronal to the cementoenamel junction (CEJ) respectively. The cavities measured 3 mm in length, 2 mm in width, and 1.5 mm in depth. The teeth were randomly divided into two groups. In group I, the cavities were restored with Opallis composite resin in association with ExciTE adhesive system (total-etch); in group II, the EWC composite resin was used for restorations. After 500 thermocycling procedures, the teeth were immersed in 0.5% fuchsin solution for 24 hours. Then, the samples were placed within a polyester model and sectioned in the buccolingual direction. The samples were evaluated under a stereomicroscope at ×30 for the penetration of dye. The enamel and dentin margins were evaluated separately. To test ordinal results, we used nonparametric statistical methods. To find out whether each independent composite groups I and II came from the same populations, we used Mann-Whitney U test and to compare two related samples' coronal margin and gingival margin, Wilcoxon signed-rank test was used.Results: There was significantly more microleakage in group II at both the enamel and dentin margins (coronal margin: p = 0.04; gingival margin: p = 0.21). In both groups, microleakage at Conclusion:Despite the high speed and the short process of restoration with Embrace WetBond, it is not a reliable restorative material for class V cavities due to its inadequate marginal seal.

Evaluation of Immediate and Delayed Microleakage of Class V Cavities Restored with Chitosan-incorporated Composite Resins: An In Vitro Study

“…On the buccal surface of each tooth, a cavity was prepared with a guideline of 1 mm above CEJ, which resulted in the gingival margin in dentin whereas the occlusal margin in enamel. This was done in accordance with a study done by Tavangar et al 12 …”

“… 15 From the literature review, it is summarized that most cervical lesions are sensitive to sweet, cold, or air as they are moderately deep. 16 In our study to mimic a relatively deep lesion, the cavity dimension was standardized based on the study design suggested by Tavangar et al 12 …”

Effect of a Resin Coating Material on the Microleakage of Class V Restorations With or Without Post-Operative Bleaching

“…This situation applies to enamel margins at a lower rate [14]. A previous study showed that in the restoration of class V cavities filled by Opallis ® composite resin and Embrace Wetbond ® resin sealant, the microleakage was higher in the second group and in both groups, microleakage at the gingival margins was higher compared to the occlusal margins [28]. In addition, different preparation techniques of class V cavities did not affect microleakage and in all the groups, microleakage at the gingival margins was higher than the occlusal margins [29].…”

The effect of low viscous coir fiber resin composite immersion time on composition dissolution

“…Internal contractions that occur during polymerization can damage the marginal seal of the composite resin that has bonded to the cavity wall, resulting in the formation of an interfacial gap. 1 During the polymerization process, the resin material will experience shrinkage. Therefore, resin materials require a matrix and filler material to reduce the shrinkage process.…”