Marginal quality of posterior microhybrid resin composite restorations applied using two polymerisation protocols: 5-year randomised split mouth trial

Three-year clinical evaluation of posterior composite restorations placed with a single-step self-etch adhesive

“…Although the resin composite used in this study had a high inorganic particle content, a degree of marginal discoloration occurred after 3 years of service (Alpha score, 83.9%). Similar results were reported in a previous clinical study (24), in which marginal discoloration was observed in some restorations but scores were not worse for posterior resin composite restorations after 5 years. However, long-term service in the oral environment increases the surface roughness of resin composites.…”

Influence of Mechanical and Chemical Degradation in the Surface Roughness, Gloss, and Color of Microhybrid Composites

“…This study was performed to demonstrate the influence of the association of mechanical and chemical challenges in microhybrid composites, which are considered resins of universal use, being indicated for posterior 3 and anterior regions, 4 with excellent mechanical and esthetic properties and good polishability. 10 In this sense, it is indispensable that characteristics of surface roughness, gloss, and color remain stable over the lifetime of the restoration.…”

“…1 Several composite resins are available for direct dental restorations, and it is possible to observe differences between them, such as the monomer system, filler composition, and matrix -filler coupling chemistry, which may contribute with differences in mechanical or chemical degradation. 2 The microhybrid resins are constituted by macro-and microparticles, presenting higher mechanical resistance and similar opacity as the tooth structure, being indicated mainly not only for the posterior region 3 but also for esthetic areas. 4 However, some studies showed disadvantages, such as reduction of surface smoothness over time.…”

Quality and Survival of Direct Light‐Activated Composite Resin Restorations in Posterior Teeth: A 5‐ to 20‐Year Retrospective Longitudinal Study

“…In the present study, the operator tried to preserve enamel cavity margins and applied two‐ or three‐step etch‐and‐rinse adhesive systems. Furthermore, placing composite resins in 2 mm oblique layer increments was found to improve marginal adaptation . In a laboratory study and a randomized 3‐year clinical evaluation, new bulk‐fill composite resins, placed in 4 mm increments, showed similar results when compared with 2 mm oblique layer increments.…”