The hardness of compact bone is about 10 times higher than cancellous (trabecular) bone, thanks to both its density and mineralization. The higher bone density gives the higher primary implants stability values . Considering that cancellous bone has lower biomechanical values, some authors like to name it ‘lower quality bone’, which is not quite exact and correct term. It is better to name it –...

background: expansion of bone marrow cavity and decreased cortical and trabecular bone tissues and osteoporosis are resulted from beta-thalassemia. the aim of this study was to assess bone mineral density (bmd) in patients with β thalassemia major and intermedia, and to determine their biochemical and hormonal profiles that may affect bmd. materials and methods: in a cross sectional study from ...

aim :  the goal of the present study was to assess the effect of omeprazole on bone mineral density and frequency of osteopenia and osteoporosis. background : the effect of omeprazole on bone turnover and the role of stomach ph alteration in calcium absorption have not been completely understood. patients and methods : in a case-control study, 58 patients who were referred to loghman hospital, ...

background trace elements and lipids have an important role in the development of osteoporosis that is a major health problem of postmenopausal women. objectives the purpose of this study was to compare the serum levels of zinc (zn), copper (cu) and lipid profile between the postmenopausal women suffering from osteoporosis and the healthy controls. furthermore, we aimed to determine whether the...

background pompe disease is an inherited metabolic disorder characterized by α-glycosidase deficiency, which leads to lysosomal glycogen accumulation in many different tissues. the infantile form is the most severe with a rapidly fatal outcome, while the late onset form has a greater phenotypic variability, characterized by skeletal muscle dysfunction and early respiratory involvement. bone min...

Background: The trabecular bone changes in the tibia of C3H/HeN mice were measured 12 weeks after whole body irradiation with various doses of fast neutrons (0-2.4 Gy) or 137Cs-generated gamma-rays (0-6 Gy). Materials and Methods: Serum calcium, phosphorus, estradiol concentration and alkaline phosphatase activity were measured. Tibiae were anal...

Body composition (fat and lean compartments) and bone mineral density were measured in 246 healthy premenopausal women, aged 20-40 years, residing in Tecumseh, Michigan. Body composition was measured using four-point bioelectrical impedance and values for fat and lean compartments categorized into tertiles. Additionally, each woman was classified into one of nine different cells based on her lo...

PURPOSE A 3-dimensional finite element analysis was performed to evaluate the influence of implant type and length, as well as that of bone quality, on the stress/strain in bone and implant. MATERIALS AND METHODS Two types (screw and cylinder) and 4 lengths (9.2, 10.8, 12.4, and 14.0 mm) of titanium implants were buried in 4 types of bone modeled by varying the elastic modulus for cancellous ...

background: the trabecular bone changes in the tibia of c3h/hen mice were measured 12 weeks after whole body irradiation with various doses of fast neutrons (0-2.4 gy) or 137cs-generated gamma-rays (0-6 gy). materials and methods: serum calcium, phosphorus, estradiol concentration and alkaline phosphatase activity were measured. tibiae were analyzed using microcomputed tomography. biomechanical...