Abstract
Objective: The objective of this double-blind, randomized controlled clinical trial was to evaluate the clinicalperformance of two methacrylate-based flowable composite and ormocer-based flowable composite in non-cariouscervical lesions (NCCLs) of adult patients. Material and Methods: 183 restorations were performed on NCCLsusing the Futurabond U adhesive system, applied in the selective enamel etching mode in all cavities. After theadhesive application, the cavities were restored with one out of the three evaluated flowable composites (n = 61per group): ormocer-based flowable composite (Admira Fusion Flow, ORM), low viscosity methacrylate-basedcomposite (GrandioSO Flow, LV) and high viscosity methacrylate-based composite (GrandioSO Heavy Flow, HV).After 12 months of clinical performance, these restorations were evaluated according to FDI and USPHS criteriain the following items: retention/fracture, marginal adaptation, marginal staining, postoperative sensitivity andcaries recurrence. Results: eight restorations were lost/fractured after 12 months of clinical evaluation (1 inthe ORM and 7 in the HV group). The retention rates for 12- months (95% confidence interval) were 98.4%(91.3%-99.7%) for the ORM group, 100% (94.5%-100%) for the LV group and 88.5% (78.1%-94.3%) for theHV group, with no statistical difference identified between any pair of groups (p > 0.05). Five restorationspresented small marginal adaptation defects at the 12-months evaluation recall, and all of them were consideredclinically acceptable. Conclusion: The clinical performance of the universal adhesive associated to ormocer-basedor methacrylate-based flowable composite were found to be promising after 12-month of clinical evaluation.KEYWORDSDental bonding; Dental restoration; Clinical trial.
Highlights
Non-carious cervical lesions (NCCLs) are usually described as the loss of dental structure at the cement-enamel junction that is not caused by dental caries [1]
The manufacturers asserted that these materials have improved mechanical properties not dissimilar from regular composite restorative materials, as reduction in polymerization shrinkage and increase in abrasion resistance [9,12] on the same time that the flowability was maintained. These new flowable generations have achieved a very satisfactory clinical performance in posterior restorations [13,14], no clinical studies were found using these materials in non-carious cervical lesions
The pure silicate matrix technology combined with nano-hybrid fillers resulted in nanoormocers that have showed a promising clinical performance in posterior restorations [18], but the impact of such chemical changes into clinical performance of restorations placed in noncarious cervical lesions has not been evaluated yet
Summary
Non-carious cervical lesions (NCCLs) are usually described as the loss of dental structure at the cement-enamel junction that is not caused by dental caries [1]. The manufacturers asserted that these materials have improved mechanical properties not dissimilar from regular composite restorative materials, as reduction in polymerization shrinkage and increase in abrasion resistance [9,12] on the same time that the flowability was maintained These new flowable generations have achieved a very satisfactory clinical performance in posterior restorations [13,14], no clinical studies were found using these materials in non-carious cervical lesions. The pure silicate matrix technology combined with nano-hybrid fillers resulted in nanoormocers that have showed a promising clinical performance in posterior restorations [18], but the impact of such chemical changes into clinical performance of restorations placed in noncarious cervical lesions has not been evaluated yet This double-blind randomized controlled clinical trial evaluated the clinical performance of two methacrylate-based flowable composite and ormocer-based flowable composite in NCCLs of adult patients
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