Assessment of bone surrounding implants in goats: ex vivo measurements by dual X-ray absorptiometry.

The aim of the present study is to determine the possibility of measuring the bone mineral density (BMD) around implants by dual energy X-ray absorptiometry (DEXA). Therefore, the trabecular BMD was measured close to 127-600 microns and at a distance from various uncoated and Ca-P-coated implants inserted into the femoral condyle of goals. The implants were left in situ for 12 weeks.

Dual X-ray absorptiometry for alveolar bone: precision of peri-implant mineral measurements ex vivo.

The precision of measurements of minor mineral changes in alveolar bone mineral content (ABMC) and alveolar bone mineral density (ABMD) on implant surfaces was determined in small regions (0.03 +/- 0.005 cm2) using dual X-ray absorptiometry (DXA).

[Osteoporosis and jaw bone reduction].

The relationship between osteoporosis and residual ridge reduction has been investigated in many studies. As a result it can be concluded that it is not easy to measure the extent of osteoporosis of the jaws. Several studies have shown that individuals with general signs of osteoporosis do not necessary have an osteoporotic mandible or maxilla.

Measurement of mandibular bone density ex vivo and in vivo by dual-energy X-ray absorptiometry.

Severe bone resorption is a vexing clinical problem, especially in patients without teeth. To study resorption in vivo, measurements of bone mineral density (BMD) of the mandible of both patients with and without teeth are needed. Using a Hologic QDR-1000 bone densitometer designed to measure lumbar spine and hips, ex vivo and in vivo measurements were made in selected areas of the mandible.