objective: at present, treatment of edentulous areas with implant-supported prosthesis has greatly increased. the aim of this study was to assess the survival rate of implants with different diameters. methods: this retrospective study was conducted on 239 warfare victims presenting to qazi tabatabaie clinic during 2000-2010. a total of 1,649 implants were placed. the success criteria included ...

objective: predoctoral dental implant education is included in dental school teaching curricula in most of the developed and some developing countries; however, it was not introduced into undergraduate curriculum of some countries and iranian dental schools. our purpose was to investigate the status of the predoctoral dental implant education of dental schools in the world. materials and method...

background and aims: plasma rich in growth factors (prgfs) has been recently proposed as an aid to enhance regeneration of osseous and epithelial tissues in oral surgery. the purpose of this study was to determine the effect of local application of platelet rich plasma (prp) on implant stability measured by periotest. materials and methods: a total of 24 implants were placed in mandible of 12 l...

introduction juvenile ossifying fibroma is a benign, bone-forming neoplasm with aggressive local growth that is distinguished from other fibro-osseous lesions primarily by its age of onset, clinical presentation and aggressive behavior. although a benign entity, juvenile ossifying fibroma is known to be locally aggressive and has a high tendency to recur. two distinctive microscopic patterns ha...

Introdouction: Although highly desirable outcomes and longterm survival of dental implant treatments are well documented, implant failures still occur due to various reasons. Several risk factors may impair implant survival including implant dimensions (length, diameter, and implant design), procedures, local bone density at the implant site, and patient-related risk factors such as age, smokin...

background and aims. because of compromised angulations of implants, the abutments are sometimes prepared. the purpose of this study was to investigate the effect of removing one wall of the implant abutment on the retention of cement-retained crowns. materials and methods. four prefabricated abutments were attached to analogues and embedded in acrylic resin blocks. the first abutment was left ...

statement of problem: thermal injury during dental implant placement and restoration is a clinical concern as it may cause bone damage and compromise osseointegration. the threshold level for heat-induced cortical bone necrosis is 47°c for 60 seconds. objectives: to measure the amount of heat transferred to the implant-bone interface when a two-piece or one-piece abutment was prepared in vertic...

background and aim:  although there have been substantial developments in dental implant therapies, achieving good implant stability (isq >60) for implants inserted in augmented sinus sites appears to be challenging in comparison with non-augmented sites due to the high prevalence of bone resorption in posterior regions of maxilla. this study aimed to evaluate and compare the time required to a...

objectives: phonemic awareness skills have a significant impact on children speech and language. the purpose of this study was investigating the phonemic awareness skills of children with cochlear implant and normal hearing peers in primary school. methods: phonemic awareness subscales of phonological awareness test were administered to 30 children with cochlear implantation at the first to six...

Implant supported dental prostheses are increasingly used in practice. The aim of this narrative review is to present the influence transmucosal surface prosthetic abutment and implant on peri-implant tissue. article describes causes bone loss around implant. Moreover, properties different materials compared discussed. advantages, disadvantages, biomechanical concept implant-abutment connection...