Taguchi Akira, Tsuda Mikio, Ohtsuka Masahiko, Nakamoto Takashi, Inagaki Koji, Noguchi Toshihide, Kudo Yoshiki, Yoshizumi Masao, Higashi Yukihito, Suei Yoshikazu, Tanimoto Keiji
Department of Oral and Maxillofacial Radiology, Hiroshima University Hospital, Minami-ku, Japan.
Menopause. 2007 May-Jun;14(3 Pt 1):500-4. doi: 10.1097/GME.0b013e31802c2a7d.
To investigate whether being overweight is associated with increased or decreased risk of tooth loss in Japanese postmenopausal women.
The number of remaining teeth (total, anterior, and posterior teeth), mandibular bone height, and mandibular cortical mass were evaluated on the dental panoramic radiographs of 450 Japanese postmenopausal women. The bone mineral densities (BMDs) at the lumbar spine and femoral neck were measured by dual-energy x-ray absorptiometry. These measurements were compared among participants in three body mass index (BMI) categories (underweight, normal BMI, and overweight).
Analysis of covariance adjusted for confounding variables revealed that participants who were overweight had a significantly lower number of total (P = 0.019) and anterior (P = 0.012) remaining teeth than did those with normal BMI, although the former had significantly higher skeletal BMD values than the latter. No significant difference was observed in mandibular bone height between the overweight participants and those with normal BMI. There were no significant differences in the number of remaining teeth between the under- and overweight participants. Overweight participants had significantly higher skeletal BMDs (P < 0.001) and tended to have larger mandibular cortical masses than those who were underweight.
Despite their higher skeletal BMD, postmenopausal women who are overweight may have an increased risk of tooth loss, especially of the anterior teeth, compared with women who have normal BMI. This risk appears to be similar to that for underweight women.
研究超重是否与日本绝经后女性牙齿脱落风险的增加或降低有关。
对450名日本绝经后女性的牙科全景X光片进行评估，记录剩余牙齿数量（总数、前牙和后牙）、下颌骨高度和下颌骨皮质质量。采用双能X线吸收法测量腰椎和股骨颈的骨密度。对体重指数（BMI）分为三类（体重过轻、正常BMI和超重）的参与者进行这些测量结果的比较。
对混杂变量进行协方差分析后发现，超重参与者的剩余牙齿总数（P = 0.019）和前牙数量（P = 0.012）明显低于BMI正常的参与者，尽管前者的骨骼骨密度值明显高于后者。超重参与者与BMI正常的参与者在下颌骨高度上未观察到显著差异。体重过轻和超重的参与者在剩余牙齿数量上没有显著差异。超重参与者的骨骼骨密度明显更高（P < 0.001），并且与体重过轻的参与者相比，下颌骨皮质质量往往更大。
尽管超重的绝经后女性骨骼骨密度较高，但与BMI正常的女性相比，她们牙齿脱落的风险可能更高，尤其是前牙。这种风险似乎与体重过轻的女性相似。
