Background: Bone tissue engineering requires materials that are biocompatible, mechanically suited for bone function, integrated with the host skeleton, and support osteoinduction of the implanted cells for new bone formation. The aim of this study was to compare the osteogenic potential of xenograft with hydroxyapatite/β- tricalcium phosphate (HA/β-TCP) scaffold. Methods: New Zealand rabbits (...

background: th e eff ects of chronic valproic acid administration on bone health have been a matter of concern and controversy.in this study, the bone status following valproate intake was assessed by using several bone-related biochemical markers. materials and methods: in this case-control study, 62 epileptic patients and 40 age- and gender-matched controls were enrolled. the patients had bee...

Introduction One of the important applications of nuclear physics in medicine is the use of radioactive elements as radiopharmaceuticals. Metastatic bone disease is the most common form of malignant bone tumors. Samarium-153-ethylene diamine tetramethylene phosphonate (153Sm-EDTMP) as a radiopharmaceutical is used for pain palliation. This radiopharmaceutical usually emits beta particles, which...

Background: In several conditions we have face cranial bone defects. Reconstruction of these defects remains one of the most challenging problems encountered by craniofacial surgeons. Objective: To evaluate bone repair in cranial bone defects by use of an implant made of octacalcium phosphate in combination with bone matrix gelatin (OCP/BMG). Methods: We used 40, 5–6-week-old male Sprague-Dawle...

currently available non-invasive clinical methods for diagnosing osteoporosis are mainly associated with ionizing radiation. ultrasonic assessment of bone disease is a more recent technology. a theoretical explanation for the relationship between ultrasonic parameters and bone structure is necessary. thus, two types of bone samples of perspex (hap) and perspex-glass beads were produced. each ty...

introduction: aneurysmal bone cysts (abc) are extremely rare in the head and neck region and even rarer in sinuses.  abc is a benign multicystic mass that is locally-destructive and rapidly expandable. hemorrhagic fluid content (like in this case) and septated appearance are the characteristic feature of abc. established treatment options for abcs include sclerotherapy, embolization, radiothera...

abstract background ewing sarcoma is the second most frequent primary bone cancer, following osteosarcoma in children. these tumors consist of small, round, or oval cells, which are believed to derive from parasympathetic autonomic nervous system. the common clinical presentations are pain, local tenderness, fever, palpable mass, and pathologic fractures. methods and materials this study descri...

desmoplastic fibroma (df) is a rare and locally aggressive intraosseous tumor with unknown etiology. the mandible is the common site of involvement in the maxillofacial region. however, it is believed that df can arise in any bone of the body. a wide age distribution has been reported for df occurrence, extending from birth to the sixth decade of life, with a peak incidence at 10 to 19 years of...

objectives: this study sought to assess the relation of mandibular cortical index (mci) with age, gender and gonial angle size in an iranian adult population using digital panoramic radiography. methods: we evaluated 370 digital panoramic radiographs of patients and divided them into five 10-year age groups. each radiograph was assigned to low (≤120°) or high (≥125°) angle groups in terms of th...