نتایج جستجو برای: crestal bone resorption

تعداد نتایج: 308997  

2015
Tsutomu Sugiura Kazuhiko Yamamoto Masayoshi Kawakami Satoshi Horita Kazuhiro Murakami Tadaaki Kirita

OBJECTIVES The success rate of dental implants depends on the type of bone at the implant site. The purpose of the present study was to investigate the effects of the bone parameters at the implant-placement site on peri-implant bone strain distributions. STUDY DESIGN The morphologies and bone densities of seventy-five potential implant sites in the posterior mandible were measured using comp...

ژورنال: مجله دندانپزشکی 2009
سیادت, حکیمه, علی حسینی, مسعود, علی خاصی, مرضیه, پنج‌نوش, مهرداد,

Background and Aim: It is well recognized that implant treatment is common worldwide, but the approach to success is not predictable because of bone loss that occurs around the implants. Also there are many factors affecting crestal bone loss around the implants that one of them is the surgical protocol of implant installation. The purpose of this investigation was to evaluate the amount of cre...

Morteza Oshagh,

Objectives Root resorption is a dangerous side effect in orthodontics, and maxillary incisors are at the highest risk for root resorption. It is important to understand optimal force considerations for patients with altered root lengths.The purpose of this study was to investigate the effects of root length on stress distribution on roots by means of three dimensional fi...

Journal: :journal of dental materials and techniques 0
hamidreza arab associate professor of periodontics, dental research center, mashhad university of medical sciences, mashhad, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) amir moeintaghavi professor of periodontics, dental materials research center, mashhad university of medical sciences, mashhad, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) naser sargolzaei 1 associate professor of periodontics, dental research center, mashhad university of medical sciences, mashhad, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) majidreza mokhtari assistant professor of periodontics, dental research center, mashhad university of medical sciences, mashhad, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) mohammad derhami prosthodontist sepideh arab dentist

introduction: the survival of an implant system is affected by the choice of antirotational design, which can include an external or internal hex. implant success also is affected by the maintenance of the crestal bone around implants. the aim of present study was to evaluate the crestal bone loss and clinical parameters related to bone loss in patients loaded with an external or internal hex 3...

Journal: :Journal of periodontology 2000
J S Hermann D Buser R K Schenk D L Cochran

BACKGROUND Today, implants are placed using both non-submerged and submerged approaches, and in 1- and 2-piece configurations. Previous work has demonstrated that peri-implant crestal bone reactions differ radiographically under such conditions and are dependent on a rough/smooth implant border in 1-piece implants and on the location of the interface (microgap) between the implant and abutment/...

ژورنال: مجله دندانپزشکی 2004
ابوالفضلی, نادر, اسکندری, امیر,

Statement of Problem: Regenerative periodontal procedures are one mode of therapy that attempts to restore the lost supporting structures of the dentition around a previously diseased root surface.Purpose: The purpose of this study was comparison between Enamel matrix proteins (EMP) used alone or in combination with autogenous bone graft (ABG) in the treatment of human intrabony periodontal def...

Journal: :International Journal of Medical and Biomedical Studies 2022

Background : To compare crestal bone changes after placement of immediate versus delayed dental implant
 Aim and Objective Comparative evaluation in palcement implant: A clinico-radiographical study.
 Methods coparative study was conducted total 20 implant sites patients within the age group 20-60 years comprising both male female visiting Out-patient Department Periodontology Implant...

Journal: :journal of dentistry, tehran university of medical sciences 0
rahab ghoveizi assistant professor, department of prosthodontics, shahid beheshti university of medical sciences, school of dentistry, tehran, iran. marzieh alikhasi mohammad-reza siadat hakimeh siadat majid sorouri

crestal bone loss is a biological complication in implant dentistry. the aim of this study was to compare the effect of progressive and conventional loading on crestal bone height and bone density around single osseointegrated implants in the posterior maxilla by a longitudinal radiographic assessment technique.twenty micro thread implants were placed in 10 patients (two implants per patient). ...

2016
Tsutomu Sugiura Kazuhiko Yamamoto Satoshi Horita Kazuhiro Murakami Sadami Tsutsumi Tadaaki Kirita

PURPOSE This study investigated the effects of bone density and crestal cortical bone thickness at the implant-placement site on micromotion (relative displacement between the implant and bone) and the peri-implant bone strain distribution under immediate-loading conditions. METHODS A three-dimensional finite element model of the posterior mandible with an implant was constructed. Various bon...

Journal: :Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons 2004
Michael Peleg Arun K Garg Craig M Misch Ziv Mazor

PURPOSE The purpose of this article is to describe a new technique and the anatomic sites for cutting and harvesting bone for grafting applications. A handheld instrument is described that cuts and collects thin shavings of bone from cortical surfaces. MATERIALS AND METHODS This study included 193 consecutive patients who needed bone augmentation and simultaneous implant placement in the seve...

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