João M. M. Caramês

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INTRODUCTION Apical constriction has been proposed as the most appropriate apical limit for the endodontic working length. Despite being the most used, some limitations are attributed to the radiographic method of working length determination. It lacks precision because it is based on the average position of the apical constriction. The electronic apex(More)
Articulation and occlusion test materials are tools used in daily prosthodontic and restorative procedures that aid the clinicians in the evaluation of adjacent and opposing natural and/or artificial tooth contacts. A precision micrometer (Series 293, Mitutoyo, Japan) with a resolution of 0.001 mm was used to measure the thickness of five articulating(More)
OBJECTIVE The purpose of this study was to evaluate the prevalence of first and second C-shaped mandibular molars in a Western European population of Portuguese Caucasians. MATERIALS AND METHODS Patients having both routine panoramic radiograph and presurgical cone-beam computed tomography (CBCT) exams were selected. The CBCT examination was performed at(More)
Fabrication of multiple direct cast dowel-and-core patterns is time-consuming and difficult because the clinician must assess the adequacy of the reduction of the final restoration and the path of insertion for the patterns. This article describes a technique for making impressions of multiple endodontically treated teeth for the indirect fabrication of(More)
Implant concepts continue to evolve not only in terms of materials, surfaces, and designs but also in clinical experience and technical management. This article presents a clinical and laboratory procedure describing how to plan, ensure, and achieve proper spatial dimension in fabricating definitive implant-supported prostheses with the use of 3 different(More)
INTRODUCTION The anatomy of the maxillary C-shaped molar has been the subject of several case reports although no true prevalence research has ever been conducted. The aim of this observational study was to evaluate and characterize the incidence of these morphologies using cone-beam computed tomographic (CBCT) technology. METHODS Patients having(More)
One of the consequences of traumatic injuries is the chance of aseptic pulp necrosis to occur which in time may became infected and give origin to periapical pathosis. Although the apical granulomas and cysts are a common condition, there appearance as an extremely large radiolucent image is a rare finding. Differential diagnosis with other(More)
Screw fractures in implant-supported restorations may compromise the viability of both the implant and the prosthesis if not adequately addressed. Although a low incidence of screw loosening or fracture has been reported, the resolution of such problems is time consuming, sometimes requiring multiple appointments. The depth and the possibility of having the(More)
AIM To investigate in vivo the number of roots, the configuration of the root canal system and the root canal splitting and merging levels in the permanent dentition of a Caucasian population. METHODOLOGY A total of 11 892 teeth were inspected in cone-beam computed tomography examinations that were collected from a pre-existing database. The number of(More)