الفهرس | Only 14 pages are availabe for public view |
Abstract Recent advances in RBC technology, especially with regard to new monomers, translucency, initiator systems and filler technology, address these shortcomings at least partially and have led to the introduction of bulk-fill RBCs. Bulk-fill RBCs can be defined as composites that can be properly cured in a single layer of (mostly) a 4-mm thickness. It has been developed to simplify the rather time-consuming incremental technique. Manufacturers claim that, opposed to conventional composites, bulk-fill composites generate a lower polymerization shrinkage stress and have higher light transmission properties due to reduction of light scattering at the filler–matrix. The aim of this study is to evaluate clinically and laboratory study the effect of different application techniques of bulk fill composite resin on improving the outcome and the longevity of dental composites in the everyday practice of dental practitioners. Sample: 40 patients will be conveniently selected to participate in this study where each patient have at least 1 posterior teeth with proximal caries (total number of teeth =40). For the in vivo evaluation Class II cavities will be prepared in forty selected patients. Each patient will receive one prepared tooth; according to the method of bulk fill composite application Test group 1, n=10 Sonicfill system, Test group 2, n=10 TetricN Ceram bulk fill, Test group 3, n=10 Surefill SDR bulkflow Control group 4, n=10 TetricN Ceram incremental layering technique. |