نتایج جستجو برای: bone
تعداد نتایج: 305233 فیلتر نتایج به سال:
objective(s):to study the effect of low-frequency vibration on bone marrow stromal cell differentiation and potential bone repair in vivo. materials and methods:forty new zealand rabbits were randomly divided into five groups with eight rabbits in each group. for each group, bone defects were generated in the left humerus of four rabbits, and in the right humerus of the other four rabbits. to t...
background: bone-specific alkaline phosphatase (bap) is synthesized by the osteoblasts and is presumed to be involved in the calcification of bone matrix, though its precise role in the formation process is unknown. the aim of the present study was to measure the bap activity in paget's and normal specimens by two different techniques. methods: total alp (tap) as well as bap activity-measu...
objective: florid cemento-osseous dysplasia (fcod) is a rare bone lesion that predominantly involves the women’s jaws in middle age. this condition is usually asymptomatic and has a benign course. case: this paper presents a rare case of fcod in a white middle aged woman, which had affected mandible bilaterally and was diagnosed after tooth extraction and treated conservatively. we believed...
Various biological bone g rafts have been used for osteogenes i s , osteoconduction and even osteoinduction, but due to systemic influences and local factors, the outcome of successful incorporation of a bone graft has not been satisfactory. This study was therefore conducted on 15 clinically healthy adult dogs between 1 to 3 years of age weighing 20 to 30 kg to evaluate the effect of bo...
objectives : bone assessment is essential for diagnosis, treatment planning and prediction of prognosis of periodontal diseases. however, two-dimensional radiographic techniques have multiple limitations, mainly addressed by the introduction of three-dimensional imaging techniques such as cone beam computed tomography (cbct). this study aimed to assess the accuracy of cbct for detection of marg...
Background and purpose: Adipose - drived stem cells are multipotent cells that capable to diffrentiate in to osteogenic cells. On the other hand, the scaffold of chitosan and gelatin are biodegradable and compatible used for tissue repair. This study evaluated the repair of femoral bone defect using adipose-derived stem cells on gelatin – chitosan membrane in adult Albino Wistar rats by radiog...
Background: Osteoporosis is one of the uncomfortable postmenopausal symptoms. The risk of imbalanced nutrition especially traces elements and vitamins are high during post menopause and may lead to osteoporosis due to reduction of content of mineral bone. The aim of this study was to investigate the potential consequence of Selenium (Se) treatment in ovariectomized rat model with osteoporosis i...
Background and purpose: Closure of the alveolar cleft using bone grafts is very important in patients with alveolar cleft. Adjunct use of platelet rich fibrin (PRF) with bone graft enhances the bone volume. The aim of the present study was to evaluate the efficacy of grafting by allografts with PRF in stability of bone volume following alveolar cleft grafting using radiographic scales. Mater...
Comparative evaluation of alveolar bone level measurement pre and at gingival surgery Dr. R. Shariatmadar Ahmadi* - Dr. KH. Mani Kashani** - Dr. N. Dorri*** * - Assistant Professor of Periodontics Dept. Faculty of Dentistry – Hamedan University of Medical Sciences. **- Assistant Professor of MSPH Dept. – Faculty of Medicine – Hamedan University of Medical Sciences. *** - Dentist. Background and...
Introduction: Osteoporosis is humans' most common bone tissue disease that causes bone fractures. Based on the evidence, a combination of genetic and environmental factors, hormonal disorders such as estrogen deficiency, malnutrition, inflammatory factors, drugs, and physical inactivity are related to the pathogenesis of this disease. The present study aimed to review the effects of androgens a...
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