en ترمیمی Cosmetic and Restorative Dentistry پژوهشي Research <p> <strong>Objectives</strong> To evaluate marginal quality and resin–resin transition of lab made resin composite inlays in deep proximal cavities with and without 3mm proximal box elevation (PBE) using resin composites before and after thermo-mechanical loading (TML). </p><p> <strong>Methods</strong> MOD cavities with one proximal box beneath the cementoenamel junction were prepared in 40 extracted human third molars. Proximal boxes ending in dentine were elevated 3mm with different resin composites (G-Cem, Maxcem Elite as self-adhesive resin cements and Clearfil Majesty Posterior as restorative resin composite in one or three layers bonded with AdheSE), or left untreated. Clearfil Majesty Posterior inlays were luted with Syntac and Variolink II (n=8). Marginal quality as well as the PBE-composite inlay interface was analyzed under an SEM using epoxy resin replicas before and after thermomechanical loading (100,000×50N and 2500 thermocylces between +5°C and +55°C).</p><p> <strong> Results</strong> Bonding resin composite inlays directly to dentine showed similar amounts of gap-free margins in dentine compared to PBE applied in three consecutive layers (p>0.05). The groups with self-adhesive resin cements for PBE exhibited significantly more gaps in dentine (p<0.05). </p><p> <strong>Significances</strong> With layered resin composite, PBE is effective in indirect resin composite bonding to deep proximal boxes. Self-adhesive resin cements are not suitable for this indication. </p><hr><p></p><p> <strong>Source: </strong>Journal of Dentistry </p><p><a href="http://www.jodjournal.com/article/S0300-5712(12)00237-0/abstract" target="_blank"><font color="#0033ff"> Full Text</font></a> </p> Composite inlays, Margin relocation, Etch-and-rinse, Self-etch, Self-adhesive 0 0 http://idai.ir/browse.php?a_code=A-10-32-826&slc_lang=en&sid=1 Matthias J. Roggendorf 10031947532846003608 10031947532846003608 No Department of Operative Dentistry and Endodontics, Dental School, University of Marburg and University Medical Center Giessen and Marburg, Campus Marburg, Georg-Voigt-Strasse 3, 35039 Marburg, Germany Norbert Krämer 10031947532846003609 10031947532846003609 No Department of Pediatric Dentistry, Dental School, University of Giessen and University Medical Center Giessen and Marburg, Campus Giessen, Schlangenzahl 14, 35392 Giessen, Germany Christoph Dippold 10031947532846003610 10031947532846003610 No Department of Operative Dentistry and Endodontics, Dental School, University of Marburg and University Medical Center Giessen and Marburg, Campus Marburg, Georg-Voigt-Strasse 3, 35039 Marburg, Germany Vera E. Vosen 10031947532846003611 10031947532846003611 No Department of Operative Dentistry and Endodontics, Dental School, University of Marburg and University Medical Center Giessen and Marburg, Campus Marburg, Georg-Voigt-Strasse 3, 35039 Marburg, Germany Michael Naumann 10031947532846003612 10031947532846003612 No Department of Prosthetic Dentistry, University of Ulm, Albert-Einstein-Allee 11, D-89081 Ulm, Germany Anahita Jablonski-Momeni 10031947532846003613 10031947532846003613 No Department of Pediatric Dentistry, Dental School, University of Marburg and University Medical Center Giessen and Marburg, Campus Marburg, Georg-Voigt-Strasse 3, 35039 Marburg, Germany Roland Frankenberger 10031947532846003614 10031947532846003614 Yes Department of Operative Dentistry and Endodontics, Dental School, University of Marburg and University Medical Center Giessen and Marburg, Campus Marburg, Georg-Voigt-Strasse 3, 35039 Marburg, Germany