background and aims. cad/cam systems facilitate the use of zirconia substructure materials for all-ceramic copings. this in vitro study investigated the marginal and internal fit of zirconia copings made with cad/cam system and slip-casting method. materials and methods. sixteen cad/cam made zirconia copings and 16 slip-cast made zirconia copings were fabricated and cemented with glass-ionomer ...

introduction: this in vitro study investigates the marginal and internal fit of indirect class ii composite restorations. two different processes for chair-side restorations were compared. in group a, the restorations were fabricated using cad/cam technology (cerec, sirona, germany, bernsheim) and in group b they were made by hand (grandioso inlay system, voco gmbh, germany, cuxhaven). methods:...

Objective: The purpose of this study is to examine the effect of Auditors’ Individual Differences on their Professional Commitment. Also, the mediation effect of Ethical Climate Fit has been examined. Methods: According to the Social Cognitive Theory, two criteria of Internal Locus of Control and Self-Efficacy were used as Auditors’ Individual Differences. To measure the Internal Locus of Cont...

WASHINGTON (AP) — Democrats promised Thursday to speed an economic recovery package through Congress, but vowed to rearrange President Bush’s budget proposal to ben­ efit m iddle-income Americans, not the rich. “ Democrats w ill not obstruct, but we w ill try to improve the p re s id e n t’s p acka ge ,” sa id House Majority Leader Richard Gephardt, D-Mo., as the Budget Committee began hearings...

AIM The purpose of this in vitro study was to investigate the marginal accuracy and internal fit of complete cast crowns and three-unit fixed partial dentures (FPDs) cast with commercially pure titanium (CPTi) and Titanium-Aluminum-Vanadium alloy (Ti-6Al-4V). METHODS AND MATERIALS CPTi and Ti-6Al-4V alloy were used to cast twelve single crowns and twelve three-unit FPDs. A traveling microscop...

AIM A common problem related to cemented single crowns is the internal misfit, which may cause inadequate retention, especially when seated on the implant abutment. The aim of this study was to compare the internal fit of Co-Cr crowns using a traditional lost-wax casting technique from laser-sintered Co-Cr alloy crowns. MATERIALS AND METHODS Twelve metallic crowns per each technique were fabr...