OBJECTIVE The purpose of this study was to determine the effect of two extraoral computer-aided design (CAD) and computer-aided manufacturing (CAM) systems, in comparison with conventional techniques, on the marginal fit of monolithic CAD/CAM lithium disilicate ceramic crowns. STUDY DESIGN This is an in vitro interventional study. PLACE AND DURATION OF STUDY The study was carried out at the...

As restaurações indiretas são comumentes fabricadas em laboratórios de prótese especializados requerendo mais etapas, pois estes usualmente dependem um técnico calibrado com experiência e habilidade, além receberem vários trabalhos diferentes dentistas. E como resposta à dependência cirurgiões-dentistas relação aos prótese, ocorreu o surgimento da tecnologia CAD/CAM (Computer-Aided Design/Compu...

PURPOSE The purpose of this study was to investigate the marginal fit of metal-free crowns made by three different computer-aided design/computer-aided manufacturing (CAD/CAM) systems. MATERIALS AND METHODS The maxillary left first premolar of a dentiform was prepared for all-ceramic crown restoration. Thirty all-ceramic premolar crowns were made, ten each manufactured by the Lava system, Cer...

OBJECTIVE For most endodontically treated teeth, tooth-colored post-core systems are preferable for esthetic reasons. Therefore, improvements in material strength must also consider tooth colored post-core complexes. The objective of this study was to evaluate the difference in tooth colored post-core complex strengths. MATERIALS AND METHODS A total of 33 human maxillary central incisor teeth...

This study aimed to investigate the transfer accuracy (trueness and precision) of three different intraoral scanning families using hardware software versions over last decade from 2012 2021, compared a conventional impression. Therefore, an implant master model with reference cube was digitized served as dataset. Digital impressions all (True definition, TRIOS, CEREC) were recorded (n = 10 per...

There is an increasing interest in “digital” restorative dentistry with the recent introduction of new scanning devices for the fabrication of chairside and off-site restorations. The chairside model-free/ impression-free systems include CEREC® (Sirona Dental Systems, Charlotte, NC) and the newly introduced E4D (D4D Technologies, LLC, Richardson, TX). These two technologies allow the clinician ...

Objective: to evaluate the impact of three different scan strategies and implant angulation on impression accuracyof an intraoral scanner for full-arch multiple scan. Material Method: A maxillary edentulous modelwith six analogs served as a reference model. The four anterior were positioned parallel toeach other, distal right left was placed with 15o 20o, respectively. Thirtyimpression performe...

Three-dimensional scanning of the mouth is required in a large number of procedures in dentistry such as restorative dentistry and orthodontics [1,2]. The 1980s saw the introduction of the first digital intraoral scanner for dentistry by a Swiss dentist, Dr. Werner Mörmann, and an Italian electrical engineer, Marco Brandestini. Nowadays, ten intra-oral scanning devices for restorative dentistry...