Posterior bulk-filled resin composite restorations. A 5-year randomized controlled clinical study.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningfagfællebedømt

Objective: To evaluate in a randomized controlled study the 5-year clinical durability of a flowable resin composite bulk-fill technique in Class I and Class II restorations. Material and methods: 38 pairs Class I and 62 pairs Class II restorations were placed in 44 male and 42 female (mean age 52.4 years). Each patient received at least two, as similar as possible, extended Class I or Class II restorations. In all cavities, a 1-step self-etch adhesive (Xeno V+) was applied. Randomized, one of the cavities of each pair received the flowable bulk-filled resin composite (SDR), in increments up to 4mm as needed to fill the cavity 2mm short of the occlusal cavosurface. The occlusal part was completed with the ormocer-based nano-hybrid resin composite (Ceram X mono+). In the other cavity, the resin composite-only (Ceram X mono+) was placed in 2mm increments. The restorations were evaluated using slightly modified USPHS criteria at baseline and then yearly during 5 years. Caries risk and bruxing habits of the participants were estimated. Results: No post-operative sensitivity was reported. At 5-year 183, 68 Class I and 115 Class II, restorations were evaluated. Ten restorations failed (5.5%), all Class II, 4 SDR-CeramX mono+ and 6 CeramX mono+-only restorations. The main reasons for failure were tooth fracture (6) and secondary caries (4). The annual failure rate (AFR) for all restorations (Class I and II) was for the bulk-filled- 1.1% and for the resin composite-only restorations 1.3% (p>0.05). For the Class II restorations, the AFR was 1.4% and 2.1%, respectively. Conclusion: The stress decreasing flowable bulk-fill resin composite technique showed good clinical effectiveness during the 5-year follow-up. Clinical significance: The use of a 4mm incremental technique with the flowable bulk-fill resin composite showed slightly better durability compared to the conventional 2mm layering technique in posterior resin composite restorations during the 5-year follow up.
TidsskriftJournal of Dentistry
Sider (fra-til)29-35
Antal sider7
StatusUdgivet - aug. 2016

ID: 160667629