PURPOSE OF REVIEW HIV infection is an established risk factor for osteoporosis and bone fracture. Combination antiretroviral therapy (cART) increases bone resorption leading to an additional 2-6% bone mineral density (BMD) loss within the first 1-2 years of therapy. Although tenofovir disoproxil fumarate is often blamed for antiretroviral drug-associated bone loss, evidence abounds to suggest t...

Background: One of the most significant factors in the success of dental implant procedures, can be mentioned by the quality and quantity of jaw bone. The occurrence of some problems such as trauma, infection, pathological lesions and the long-term absence of teeth in patients, it causes irregularities in the jaw bone and can get bone resorption. Sever defects after trauma or tumor resection ne...

This study documented bone loss at three different sites in the early postmenopausal period, and examined potential predictors. Forty-three women underwent repeated measurements of bone density at the lumbar spine, proximal femur and distal radius for up to 14 years. Individual rates of bone loss were calculated for the spine and hip; for radial trabecular bone, rates were calculated separately...

Bone Conduction Hearing aids are used mainly for the treatment of patients who suffer from Single Sided deafness and/or Conductive/ mixed hearing loss but not Bilateral Sensorineural loss. Vibration Acoustic Stimulation is a combination both air and bone conduction at same time, four aids, two ears bilateral one aid, on defective ear single sided (SSD) Unilateral Loss. We have tried this approa...

Nonunion and secondary reduction loss complicate open distal femur fractures with bone loss. The authors hypothesized that locking plates decrease subsequent bone grafting yet maintain alignment and immediate postfixation radiographic features predict primary union. A retrospective chart/radiographic review was performed at a Level 1 university trauma center. Thirty-four adults with 36 open AO/...

the platform switching (pls) concept was introduced in the literature in 2005. the biological benefits and clinical effectiveness of the pls technique have been established by several studies. in this article different aspects of pls concept are discussed. crestal bone loss, biologic width, and stress distribution in this concept are comprehensively reviewed. in this article the relative publis...

statement of the problem delayed loading is one of the anxieties of implant patients. immediate loading can solve the problem and make patients more satisfied. purpose the present study was aimed to compare the marginal bone level in periapical radiographs of maxi implants under different loading (immediate and delayed) patterns. material and methods this split mouth experimental study included...

it appears that until bone graft has not achieved 100% success, intraradicular diseases remain controversial and therefore, different treatment plans are suggested for them. treating intraradicular diseases depend on many factors: maxillary molars are more prone to bone loss and have worse prognosis. to assess prognosis more carefully these factors should be considered: 1) bone loss: its apical...

BACKGROUND Cancer patients experience osteoporosis resulting from accelerated loss of bone mineral density (BMD) caused by their treatment. Such bone loss greatly increases the risk for fracture and can have other serious effects on quality of life. METHODS In the current report, the author focuses on studies of cancer therapy-associated bone loss, its prevalence and pathogenesis, and resulti...

Bone is maintained by coupled activities of bone-forming osteoblasts/osteocytes and bone-resorbing osteoclasts. Alterations in this relationship can lead to pathologic bone loss such as osteoporosis. It well known that osteogenic cells support osteoclastogenesis via production RANKL. Interestingly, our recently identified marrow mesenchymal cell population—marrow adipogenic lineage precursors (...