i ntroduction: bisphosphonates are  widely used  for  various bone  diseases including osteoporosis and bone tumors. one of the complications associated with these pharmaceutical agents is bisphosphonate-related osteonecrosis of the jaw. this condition may be triggered by placement of dental implants. in turn,  osteonecrosis  of  the  jaw  may  cause  failure  in  osseointegration  of implants....

in this article, three techniques for maxillo-mandibular relationship for replace-select implants are described. the use of healing abutments, planning abutments, and impression copings are presented, and the advantages and disadvantages are discussed.

screw-retained implant restorations have an advantage of predictable retention as well as retrievability, and obviate the risk of excessive sub-gingival cement commonly associated with cement retained implant restorations. screw-retained restorations generally have screw access holes, which can compromise esthetics and weaken the porcelain around the holes. the purpose of this study is to descr...

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...