Cortical bone mineral density in the mandible and osteoporosis status in postmenopausal women

Abstract

Kletnetti E, Vainio P, Lassila V, Alhava E: Cortical bone tnltteral density in the mandible and osteoporosis status in postmenopausal women. Scand J Dent Res 1993: 101: 219-23. © Munksgaard, 1993 Mineral density of the cortical bone of the mandible was determined by singleenergy QCT (quantitative computed tomography) for 77 menopausal women. Bone mineral densities (BMD) were measured in the buccal and lingual layers of the cortex, distally from the foramen mentale, on both sides of the mandible. All the women were edentulous in that region, and the alveolar processes were far resorbed. These results were compared with the BMD values of the femoral neck, lumbar spine, and trabecular portion of the mandible between the detected layers of cortex. The BMD of the buccal cortex correlated remarkably well with all values, except those of the trabecular portion. Of the women tested, the correlations were lowest in the least osteoporotic group. The values for the lingual cortex did not correlate with other variables as well as did those for the buccal cortex, but in the most osteoporotic part of the sample the lingual cortex values correlated significantly with the BMD of the trabecular portion. The BMD values for the buccal cortex were significantly higher than those for the lingual cortex.

Interrelationships between Tooth Properties and Biochemical Bone Turnover Markers Investigated on Six-Month-Old Pig Model

“…The second used method in this study is quantitative computed tomography (QCT) that allows for separate measurement of volumetric bone mineral density of the trabecular and cortical bone compartments (expressed in g/cm 3 ) as well as determination of mean volumetric tooth mineral density (TvBMD) and total tooth volume (Tvol). In contrast to DEXA, QCT eliminates the error in mineral density measurements present in the former method [4,8,10,15]. However, the resolution for miniature samples analysis is too small to provide precise results and relatively high doses of X-rays are emitted during the scanning procedure, which might not be particularly beneficial for living subjects.…”

Atrophy of the residual alveolar ridge following tooth loss in an historical population

“…However, due to the large sample size of 263 jaw specimens it was economically not possible to study systemic bone disorders such as osteopenia and osteoporosis by means of x-rays or DEXA. Several studies reported that osteoporosis might promote ridge resorption (Bays & Weinstein, 1982;Kribbs et al, 1983;Hirai et al, 1993) (Klemetti et al 1993a;Klemetti et al 1993b;Bollen et al, 2004). Devlin & Horner (2007) state that age-related bone loss of the jaw resulting in cortical porosity and a reduced BMD and BMC (Hildebolt, 1997) has to be clearly distinguished from external alterations of the mandibular alveolar process due to tooth loss.…”

Osteoporosis: Dental Implications

“…Klemetti (1994) 16 classified morphology of mandibular inferior cortex (MIC) by observing the mandible distally from mental foramen as follows:…”