Çakan, UmutKara, Haluk Barış10.07.20192019-07-1010.07.20192019-07-102015Çakan, U. ve Kara, H. B. (2015). Effect of opaque layer application on the color of resin composites used to fill access openings of screw-retained implant restorations. International Journal of Prosthodontics, 28(4), 415-417. https://dx.doi.org/10.11607/ijp.41900893-21741942-4426https://dx.doi.org/10.11607/ijp.4190https://hdl.handle.net/20.500.12511/2830WOS: 000359510400016PubMed ID: 26218028The purpose of this preliminary in vitro study was to evaluate the effect of an opaque layer and application of resin composite in dual colors on the Delta E values of resin composites used to fill access openings of screw-retained implant restorations. Sixty cylindrical nickel-chromium metal molds with a central channel simulating a posterior screw-retained, implant-supported, porcelain-fused-to-metal crown were cast. Access openings were filled with combinations of opaquer, enamel composite (A2E), dentin composite (A2B and A3B), and resilient composite. Delta E values differed significantly among the groups (P < .01). The combination of opaque layer and dual color resin composites of shades A2E and A3B resulted in significantly lower Delta E values than the other groups (P < .01).eninfo:eu-repo/semantics/closedAccessOpaque LayerImplantCompositeColor Resin CompositesArticle28441541710.11607/ijp.4190Q4Q1