successful treatment of a large implant periapical lesion (ipl) that caused paraesthesia and perimandibular abscess. ipl is a pathologic phenomenon that rarely involves implants. this event first described in 1992 with an incidence rate of 0.26–9.9% and the origin is not well known. the most likely suggested causes are presence of preexisting bone pathology, contamination of implant surface, bo...

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...

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...

Background: The hip joint is the largest joint after the knee, which gives stability to the whole human structure. The hip joint consists of a femoral head which articulates with the acetabulum. Due to age and wear between the joints, these joints need to be replaced with implants which can function just as a natural joint. Since the early 19th century, the hip joint arthroplasty has evolved, a...