case selection and treatment plan are important aspects of endodontic treatment. dentists should organize the treatment plan based on their knowledge, abilities, skills and more importantly the patients’ preference and dentition. indubitably, the treatment plan for each patient is exclusive and “tailor-made” and cannot be used for all patients. dentists’ self-estimation of their abilities opens...

Metal artifacts cause errors in the exact delineation of implants and dose changes radiotherapy. In this study, distribution differences region interest (ROI) were calculated by deliberately making contouring from real size model using both Monaco treatment planning system (TPS) Geant4 toolkit. Sec. 2, computed tomography images acquired placing known uniform cylindrical geometry titanium (Ti6A...

background: as various implant geometries present different biomechanical behaviors, the purpose of this work was to study stress distribution around tapered and cylindrical threaded implant geometries using three-dimensional finite element stress analysis.     methods: seven implant models were constructed using the cad system. after digitized models of mandibular section, the crowns were crea...

introduction: the purpose of this study was to compare the accuracy of the torque wrenches used in different dental implant systems. methods: we evaluated 42 torque wrenches used in different dental clinics in mashhad, iran, using a digital torque meter (mark 10). high (25, 30 and 35 n·cm) and low (15 n·cm) levels of torque were examined. ten tests were performed on each wrench, and the mean va...

Objectives: To evaluate the influence of implant geometry and anatomical region on stability. Methods: A randomized controlled clinical trial was conducted 45 patients, in whom a total 79 implants were placed: 40 MIS C1 Implants 39 Seven Implants. The stability quotient measured using resonance frequency analysis immediately after placement 8 weeks later with an Osstell Mentor device. Results: ...

Purpose To present the implementation of a magnetic resonance imaging (MRI) pre-planning technique in multi-interstitial perineal and endocavitary gynecological brachytherapy. Material and methods We used a new fully MRI-compatible applicator that is capable to engage titanium needles, and an intrauterine tandem, developed in our department for the treatment of gynecological cervical cancer p...

RATIONALE Pelvic malunion is a rare complication and is technically challenging to correct owing to the complex three-dimensional (3D) geometry of the pelvic girdle. Hence, precise preoperative planning is required to ensure appropriate correction. Reconstructive surgery is generally a 2- or 3-stage procedure, with transiliac osteotomy serving as an alternative to address limb length discrepanc...