【お知らせ】 - 医院情報 | メディア掲載情報 | 学会論文情報 | ボーンライト関連情報 | セミナー開催のお知らせ | 採用情報
第29回米国骨代謝学会（ASBMR）で発表
2007年9月16日から19日ハワイ州ホノルルにて開催されました第29回ASBMRに当院の高石院長が出席しました。
コンベンションセンターにて世界各国5000名の会員からなる権威ある学会ASBMRが開催され、日本からも今回は多くの参加者がありました。特に今回初めて歯科に関わりの深い顎骨骨壊死のセッションが開催され、内科、整形外科、口腔外科、歯科の先生方が参加され真剣に討議されました。発症予防に大事なことは、骨粗鬆症の患者さんは治療前に抜歯、歯周外科等の外科処置を歯科医院で済ませること、そして、骨粗鬆症治療中は定期的に歯科医院に歯科チェックを受け、口腔内をできるだけ清潔に保つことが大切であるとの報告がありました。
当歯科医院では、骨粗鬆症患者の皆様の顎骨壊死予防対策をさせていただいています。
発表内容を下記に記載致します。
T280] Clinical Evaluation of Jaw Bone Density with a Newly Developed "Jaw Bone Density Evaluation System" - Relationship with Osteoporosis Evaluation
Y. Takaishi1, A. Kamada2, T. Ikeo2, T. Miki3. 1Takaishi Dental Clinic, Himeji-city, Japan, 2Biochemistry, Osaka Dental University, Osaka, Japan, 3Geriatric medicine, Osaka City University, Osaka, Japan.
The relationship between osteoporosis and changes in alveolar bone has become a target of interest, as the formation and resorption processes of the bone structure and periodontal structure are analogous. The number of osteoporosis patients increases in accordance with age. The same trend is observed in patients with periodontal diseases or with teeth loss. Therefore, osteoporosis may be one of the risk factors of the teeth loss due to reduction of the alveolar bone. Unfortunately clinical methods to evaluate alveolar bone have yet to be established and medical proofs are still insufficient.
We estimated alveolar bone density using a new "mandibular bone density evaluation system" and examined the relationship with osteoporosis to determine whether jaw bone evaluation is clinically useful in assessing osteoporosis.
Thirty four postmenopausal female subjects (age: 50-69, average age: 59.9) participated in the experiment. In a simple X-ray scan of mandibular bone, standard substance (aluminum step wedge) was also scanned. The bone density was estimated based on the difference in their rates of transmittance. The correlations among bone mineral density (BMD) by DXA, cortical bone of proper alveolar bone portion and cancellous bone of support alveolar bone portion in mandibular bone were examined.
Cancellous bone density of support alveolar bone (A) and cortical bone density of proper alveolar bone(B) were 87.0±18.1(SD) and 89.9±26.7, respectively. Significant correlation between (A) and (B) was observed (r=0.736,p<0.01). The correlations of lumber BMD by DXA and BMD (A) and (B) were significant, respectively (r=0.638,p<0.01, 0.414,p<0.05).
Both cancellous bone density of support alveolar bone (A) and cortical bone density of proper alveolar bone (B) correlated with lumber BMD; however, the correlation with (A) was greater. These results suggest alveolar bone BMD by the jaw bone density evaluation system can be utilized as one of the screening tools for osteoporosis. This system may also utilized in a large scale screening of osteoporosis in the dental fields because of low cost and short period for the evaluation. This system may provide great contributions for osteoporosis patients.
