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  • 1
    Digitale Medien
    Digitale Medien
    Comparison of broadband ultrasound attenuation to single X-ray absorptiometry measurements at the calcaneus in postmenopausal women (1994)
    Springer
    Calcified tissue international 54 (1994), S. 87-90 
    Details
    ISSN: 1432-0827
    Schlagwort(e): Calcaneus ; Ultrasound ; Bone mineral density ; Precision
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin , Physik
    Notizen: Abstract Broadband ultrasound attenuation (BUA), a radiation-free and portable technology, may be useful in assessing bone density and fracture risk. In this study, we compared cross-sectional BUA measurements to the more established single energy X-ray absorptiometry measurements of bone mineral density (BMD) at the calcaneus in 259 healthy postmenopausal women, aged 45–76 years. Paired measurements with repositioning of the subject's dominant heel were made consecutively by each method. A coefficient of variation (CV) for each method was calculated for each individual from the paired scans. BUA and BMD of the heel were also compared with BMD of the lumbar spine and femoral neck, as measured by dual energy X-ray absorptiometry. BUA was significantly correlated with BMD at the calcaneus (r=0.66, P〈0.01). Heel BUA was also correlated with lumbar spine BMD (r=0.43, P〈0.01) and femoral neck BMD (r=0.43, P〈0.01) but the correlations were lower than those between heel BMD and spine (r=0.63, P〈0.01) or femoral neck BMD (r=0.62, P〈0.01). The mean CV for heel BUA (3.60±3.50%) was significantly greater than that for heel BMD (1.06±0.99%, P〈0.01). The moderate correlation of calcaneal BUA and BMD, the lower correlations of BUA than heel BMD with both spine and hip BMD, and lower precision of BUA indicate BUA does not predict bone density as effectively as absorptiometry, the current standard methodology.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00296056
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Increased Risk of Tooth Loss is Related to Bone Loss at the Whole Body, Hip, and Spine (1996)
    Springer
    Calcified tissue international 59 (1996), S. 433-437 
    Details
    ISSN: 1432-0827
    Schlagwort(e): Key words: Tooth loss – Bone mineral density.
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin , Physik
    Notizen: Abstract. Increased systemic bone loss may be a risk factor for tooth loss by contributing to the resorption of tooth-supporting alveolar bone. Concurrent longitudinal associations between tooth loss and bone loss at the whole body, femoral neck, and spine were examined in 189 healthy, white, dentate, postmenopausal women who participated in three intervention trials conducted within a 7-year period. None of the subjects was taking estrogen. Bone mineral density (BMD) was measured by dual photon or dual energy X-ray absorptiometry. Teeth were counted at baseline; number and timing of teeth lost over the observation period were assessed by questionnaire. All analyses were controlled for years since menopause, body mass index, number of teeth at baseline, smoking status, and the assigned treatment during each study. These interventions were calcium (Ca) or placebo (P) in Study I, vitamin D+Ca or P+Ca in Study II, and 1 of 2 doses of vitamin D+Ca in Study III. Age at baseline (mean ± SD) was 59 ± 6 years and the number of teeth remaining was 23 ± 7. Women who lost teeth during the 7-year follow-up (n = 45) experienced less favorable changes in BMD at all sites compared with 144 women who lost no teeth (whole body mean ± SE, −0.35 ± 0.08%/year versus −0.11 ± 0.05, P 〈 0.01; femoral neck −0.48 ± 0.38%/year versus −0.14 ± 0.35, P 〈 0.05; and spine, +0.05 ± 0.21%/year versus +0.45 ± 0.16, P 〈 0.05). For each 1%/year decrement in BMD, relative risks (and 95% CI) of losing a tooth were significantly elevated at the whole body (RR = relative risks, CI = confidence interval) (RR = 4.83, CI = 1.72–13.52, n = 180), femoral neck (1.50, 1.02 to 2.22, n = 189), and spine (1.45, 1.00 to 2.11, n = 167). These results provide support for a role of systemic bone loss in the development of tooth loss among postmenopausal women.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00369206
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
    Volltext
  • 3
    Digitale Medien
    Digitale Medien
    Increased risk of tooth loss is related to bone loss at the whole body, hip, and spine (1996)
    Springer
    Calcified tissue international 59 (1996), S. 433-437 
    Details
    ISSN: 1432-0827
    Schlagwort(e): Tooth loss ; Bone mineral density
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin , Physik
    Notizen: Abstract Increased systemic bone loss may be a risk factor for tooth loss by contributing to the resorption of toothsupporting alveolar bone. Concurrent longitudinal associations between tooth loss and bone loss at the whole body, femoral neck, and spine were examined in 189 healthy, white, dentate, postmenopausal women who participated in three intervention trials conducted within a 7-year period. None of the subjects was taking estrogen. Bone mineral density (BMD) was measured by dual photon or dual energy X-ray absorptiometry. Teeth were counted at baseline; number and timing of teeth lost over the observation period were assessed by questionnaire. All analyses were controlled for years since menopause, body mass index, number of teeth at baseline, smoking status, and the assigned treatment during each study. These interventions were calcium (Ca) or placebo (P) in Study I, vitamin D+Ca or P+Ca in Study II, and 1 of 2 doses of vitamin D+Ca in Study III. Age at baseline (mean±SD) was 59±6 years and the number of teeth remaining was 23±7. Women who lost teeth during the 7-year follow-up (n=45) experienced less favorable changes in BMD at all sites compared with 144 women who lost no teeth (whole body mean±SE, -0.35±0.08%/year versus -0.11±0.05, P〈0.01; femoral neck -0.48±0.38%/year versus -0.14±0.35, P〈0.05; and spine, +0.05±0.21%/year versus +0.45±0.16, P〈0.05). For each 1%/year decrement in BMD, relative risks (and 95% CI) of losing a tooth were significantly elevated at the whole body (RR=relative risks, CI=confidence interval) (RR=4.83, CI=1.72–13.52, n=180), femoral neck (1.50, 1.02 to 2.22, n=189), and spine (1.45, 1.00 to 2.11, n=167). These results provide support for a role of systemic bone loss in the development of tooth loss among postmenopausal women.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00369206
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
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