نتایج جستجو برای: bone implants application

تعداد نتایج: 1101817  

Journal: :journal of dentistry, tehran university of medical sciences 0
ar. rokn h. noorani r. afzalifar

statement of problem: the replacement of missing teeth with implant-associated restorations has become a widely used treatment modality in recent years. the length of dental implants may be a critical factor in achieving and maintaining osseointegration. purpose: the aim of this study was to evaluate the survival rate and bone loss of dental implants with different lengths materials and methods...

Journal: :European journal of orthodontics 2011
Athina Chatzigianni Ludger Keilig Heinz Duschner Hermann Götz Theodore Eliades Christoph Bourauel

The purpose of this study was to compare numerical simulation data derived from finite element analysis (FEA) to experimental data on mini-implant loading. Nine finite element (FE) models of mini-implants and surrounding bone were derived from corresponding experimental specimens. The animal bone in the experiment consisted of bovine rib. The experimental groups were based on implant type, leng...

Journal: :journal of dentistry, tehran university of medical sciences 0
aar. rasouli ghahroudi assistant professor, department of periodontology, school of dentistry, tehran university of medical ar talaeepour professor, department of oral and maxillofacial radiology, school of dentistry, tehran university of a. mesgarzadeh associate professor, department of oral and maxillofacial surgery, school of dentistry, tehran unive ar. rokn associate professor, department of periodontology, school of dentistry, tehran university of medical a. khorsand associate professor, department of periodontology, school of dentistry, tehran university of medical nn. mesgarzadeh dentist, private practice

objective: vertical bone loss evaluations in the nobel biocare replace® select tapered tm implant system in the human after one-year loading time. materials and methods: this retrospective cross-sectional study was performed on 31 patients (14 men, 17 women; mean age, 60.39 years) receiving 170 implants (mean, 5.48 for each patient) of groovy and non-groovy designs in the nobel biocare replace®...

Journal: :journal of dentistry, tehran university of medical sciences 0
minoo mahshid associate professor, prosthodontics department, dental school, shahid beheshti university of medical sciences, tehran, iran. allahyar geramy professor, dental research center dentistry research institute & department of orthodontics, tehran university of medical sciences, tehran, iran. massoud ejlali assistant professor, prosthodontics department, dental school, shahid beheshti university of medical sciences, tehran, iran. majid sedaghat monfared assistant professor, prosthodontics department, dental school, shahid beheshti university of medical sciences, tehran, iran. shirin rezvani habib abadi assistant professor, prosthodontics department, dental school,qazvin university of medical sciences, qazvin, iran.

the main goal of this study was to evaluate differences in stress distribution relevant to the number of implants under an anterior bridge when combined with a removable partial denture in the posterior region.four three-dimensional finite element models (3d fem) were designed from a mandible containing an implant-supported bridge extending between canines, and a bilateral distal extension remo...

Journal: :journal of dentistry, tehran university of medical sciences 0
mahasti sahabi assistant professor, department of prosthodontics, school of dentistry, shahid beheshti university of medical sciences, tehran, iran ; dental research center, research institute of dental sciences of shahid beheshti, university of medical sciences, tehran, iran. mehdi adibrad periodontist, department of periodontology, school of dentistry, isfahan university of medical science, isfahan, iran. fatemeh sadat mirhashemi dental research center, research institute of dental sciences of shahid beheshti, university of medical sciences, tehran, iran ; msc, ph.d student, mechanics of agricultural engineering, ferdowsi university of mashhad, mashhad, iran. sareh habibzadeh assistant professor, department of prosthodontist, tehran university of medical sciences, international campus, dental school, tehran, iran.

the purpose of this study was to determine the influence of platform switching on stress distribution of two different implant systems using three-dimensional (3d) finite element models.six 3d finite element models were created to replicate two different implant systems with peri-implant bone tissue, in which six different implant-abutment configurations were represented: model xive-a: 3.8-mm-d...

Journal: :journal of dentistry, tehran university of medical sciences 0
t. ansari assistant professor, department of orthodontics, yenepoya dental college, yenepoya university, manga r. mascarenhas senior professor, department of orthodontics, yenepoya dental college, yenepoya university, managlor a. husain senior professor, department of orthodontics, yenepoya dental college, yenepoya university, managlor

objective: implants are being used in orthodontics as a reliable mode of anchorage. among other factors, the cortical bone thickness plays a major role in determining the stability of these implants. the objective of this study was to study the relationship of various arch forms and the cortical bone thickness and to determine if the cortical bone thickness varies between various arch forms. th...

Journal: :journal of dentistry, tehran university of medical sciences 0
mh. fathi v. mortazavi a. doostmohammadi

objective: osseous defects around dental implants are often seen when implants are placed in areas with inadequate alveolar bone, or around failing implants. bone regeneration in these areas using bone grafts or its substitutes may improve dental implants prognosis. the aim of this study was to prepare and characterize the bioactive glass nanopowder and development of its coating for treatment ...

ایزدی, مژگان, توکلی, محمد, ریسمانچیان, منصور, قارونی, بهنام, مقاره عابد, احمد, یقینی, جابر,

Introduction: Dental implants are the choice of treatment for missing teeth. Despite the very good results, implant treatment is also associated with some failures and complications. The aim of this study was evaluation of survival rate and tissue health indexes around the Dio® SM dental implants placed in patients of dental school and a private office in Isfahan from 2005 until 2010. Me...

Journal: :The International journal of oral & maxillofacial implants 2011
Roshanak Baghai Naini Saied Nokar Hasti Borghei Marzieh Alikhasi

PURPOSE According to the so-called All-on-Four protocol, four dental implants are placed in the interforaminal region of the edentulous mandible to support full-arch fixed prostheses. In this design, the posterior implants are tilted distally to a maximum of 45 degrees. The purpose of this finite element study was to evaluate the stress concentration in peri-implant bone during two loading cond...

2012
Ruggero Bosco Jeroen Van Den Beucken Sander Leeuwenburgh

The mechanical and biological properties of bone implants need to be optimal to form a quick and firm connection with the surrounding environment in load bearing applications. Bone is a connective tissue composed of an organic collagenous matrix, a fine dispersion of reinforcing inorganic (calcium phosphate) nanocrystals, and bone-forming and -degrading cells. These different components have a ...

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