Titanium (Ti) is one of the most widely used biomaterials for manufacturing dental implants. The implant surface properties strongly influence osseointegration. The aim of the present study was to in vitro investigate the characteristics of Ti dental implants in terms of mutagenicity, hemocompatibility, biocompatibility, osteoinductivity and biological safety. The Ames test was used to test the...

background: comparing continuous films taken at different timescales is a way to study the alveolar bone changes around the implant over time. one of the important concerns in quantitative analysis of the alveolar bone changes over the time is to reduce variations in the x-ray imaging geometry and image density. methods: using a modified xcp film holder together with the bite recording material...

introduction: dental malpractice is the failure of a professional person to render appropriate services through reprehensible ignorance or negligence or through criminal intent, especially when injury or loss follows. since dental implants have gained a special place in modern dentistry and this new treatment is a costly one, paying more attention to the prevention of malpractice is more import...

high variability in delivering the target torque is reported for friction-style mechanical torque limiting devices (f-s mtlds). the effect of aging (number of use) on the accuracy of these devices is not clear. the purpose of this study was to assess the effect of aging on the accuracy (±10% of the target torque) of f-s mtlds.fifteen new f-s mtlds and their appropriate drivers from three differ...

conclusions based on the clinical and radiographic examinations, implant-tooth approximation (less than 1 mm or direct contact) is not related to pulp vitality of the tooth. further studies with larger sample sizes are necessary to confirm the results of the study. results among the 31 assessed implants and the adjacent intact teeth, 13 implants had direct contact and 18 implants had proximity ...

purpose: to compare the rate of fibrovascular ingrowth between primary and secondary orbital implants at varying time intervals after implantation. methods: we prospectively compared the rate of fibrovascular ingrowth between primary and secondary implants by mri and scinitigraphy in patients who underwent orbital implant surgery, 6 months after the operation. results: overall 103 patients unde...

objective: the aim of the present study was to retrospectively evaluate small-diameter (3.3 mm) straumann® dental implants placed in the maxilla or the mandible over a period of 5 years in function. materials and methods: twenty- eight partially edentulous patients received a total of 48 implants over a 5-year period. after the standard healing period (3 to 6 months), the implants were restored...

background and aims. all-on-four technique involves the use of tilted implants to allow for shorter cantilevers. this finite element analysis aimed at investigating the amount and distribution of stress in maxillary bone surrounding the implants with all-on-four vs. frequently used method with six implants technique using different numbers and inclination angles. materials and methods. a 3d ede...

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 ...

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...