A randomized double-blind clinical trial of posterior composite restorations with or without bevel: 1-year follow-up |
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Authors: | Coelho-De-Souza Fábio Herrmann Camargo Junara Cristina Beskow Tiago Balestrin Matheus Dalmolin Klein-Júnior Celso Afonso Demarco Flávio Fernando |
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Affiliation: | Department of Conservative Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil. |
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Abstract: | Objective This randomized double-blind clinical trial compared the performance of posterior
composite restorations with or without bevel, after 1-year follow-up. Material and Methods Thirteen volunteers requiring at least two posterior composite restorations were
selected. Twenty-nine cavities were performed, comprising 14 without bevel (butt
joint) and 15 with bevel preparation of the enamel cavosurface angle. All cavities
were restored with simplified adhesive system (Adper Single Bond) and composite
resin (Filtek P60). A halogen light curing unit was used through the study.
Restorations were polished immediately. Analysis was carried out at baseline,
after 6 months and after 1 year by a calibrated evaluator (Kappa), according to
the FDI criteria. Data were statistically analyzed by Mann-Whitney test
(p<0.05). Results Beveled and non-beveled cavities performed similarly after 1 year follow-up,
regarding to fractures and retention, marginal adaptation, postoperative
hypersensitivity, recurrence of caries, surface luster and anatomic form. However,
for surface and marginal staining, beveled cavities showed significantly better
performance (p<0.05) than butt joint restorations. Conclusions It was concluded that the restorations were acceptable after 1 year, but
restorations placed in cavities with marginal beveling showed less marginal
staining than those placed in non-beveled cavities. |
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Keywords: | Clinical trial Composite resins Bevel Dental restoration permanent |
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