The aim of this study was to compare three types of post and core systems by analyzing the stress magnitude within the root. To this end, two-dimensional photoelastic simulation models of endodontically treated maxillary central incisors were fabricated. Three different types of post and core systems were selected for this study: composite resin post and core, composite resin core in combinatio...

We investigate the post-explosion phase in core-collapse supernovae with 2D hydrodynamical simulations and a simple neutrino treatment. The latter allows us to perform 46 follow evolution of 32 explosion models during several seconds. present broad study based on three progenitors (11.2, 15, 27 M?), different heating efficiencies, various rotation rates. show that first seconds after shock revi...

abstract: cone-beam computed tomography (cbct) has been accepted as a useful tool for diagnosis and treatment in endodontics. despite a growing trend toward using cbct in endodontic practice the cbct images should be interpreted carefully. this case report presents a case that showed radiolucency inside and around a tooth which was free of pathologic changes under a dental operative microscope ...

OBJECTIVES This retrospective study investigated the clinical effectiveness over up to 8 years of parallel-sided and of tapered glass-fiber posts, in combination with either hybrid composite or dual-cure composite resin core material, in endodontically treated, maxillary anterior teeth covered with full-ceramic crowns. METHODS The study population comprised 192 patients and 526 endodontically...

Background and Aim: The purpose of this study was to compare thermal stress on various restorative post and core materials generated by oral temperature changes using three dimensional finite element analysis. Materials and Methods: Three dimensional model of a mandibular right first premolar restored with a metal-ceramic crown and a dowel – core system was constructed. The thermal load applied...

BACKGROUND Endodontically treated teeth have significantly different physical and mechanical properties compared to vital teeth and are more prone to fracture. The study aims to compare the fracture resistance of endodontically treated teeth with and without post reinforcement, custom cast post-core and prefabricated post with glass ionomer core and to evaluate the ferrule effect on endodontica...