ヒト永久歯における健全歯および齲蝕歯歯質中の Mn, Pb および Al 濃度に関する研究 : 特に歯科疾患との関連について
スポンサーリンク
概要
- 論文の詳細を見る
Extracted human permanent teeth without restoration were collected at a dentist office in Nakatsu-city, Ooita. Sound teeth were classified into three groups consisting of impacted wisdom teeth (IW), pericoronitis of wisdom teeth (PW), and marginal periodontitis (MP), which are the primary diseases responsible for teeth extraction. Carious teeth were also classified into three groups of early caries (localized caries in enamel and/or dentin, EC), pulpitis (PU), and apical periodontitis (AP), depending on the stage of caries. The teeth were mechanically separated into enamel and dentin. The concentrations of Mn, Pb and Al in both substances were measured by simultanous multielement atomic absorption spectrophotometry, and examined in reference to the dental diseases. The results obtained were as follows : Sound enamel : The concentrations of Mn, Pb and Al were significantly higher in MP group than in IW and PW groups, and their values were 3.5, 5.3 and 2.1 times as high as the levels in IW group, respectively. No significant difference was found in concentrations of the three elements between males and females, and between wisdom teeth and others. There was also no age-associated change in Mn and Pb concentrations. Sound dentin : The concentrations of Mn and Pb in MP group were 3.2 and 3.6 times higher than those in IW group, respectively. They were also significantly higher than Mn and Pb concentrations in PW group. The Al concentration was significantly higher in MP group than in PW group, and was 1.5 times as high as the level in IW group. As in enamel, there was no difference in concentrations of the three elements between wisdom teeth and others, and no sex-or age-related change in concentration of Mn and Pb. Thus, the foregoing results indicate that the dental diseases have greater effects on the concentrations of Mn, Pb and Al in sound enamel and dentin than the factors such as sex, tooth type and age. Carious enamel : The concentrations of Mn, Pb and Al increased with the advance of caries. The Mn and Al concentrations were significantly higher in AP group than in EC and PU groups. The Pb concentration in AP group was significantly higher than that in EC group. Carious dentin : The concentrations of the three elements increased with the advance of caries, and were markedly high in AP teeth which had already lost their enamel before extraction. These results suggest that the degree of caries should be primarily taken into consideration for analysis of trace elements in the carious enamel and dentin.
- 1994-10-25
著者
関連論文
- P-7. ネパール王国ダパケル村の生活用水(第 59 回九州歯科学会総会講演抄録)
- P-7 ネパール王国ダパケル村の生活用水
- ヒト咽頭癌細胞株 (KB) における 5-FU 前投与によるシスプラチンの細胞毒性および DNA 結合に及ぼす効果の検討
- ヒト乳歯齲蝕と歯質中のSr, Al及びMn濃度との相関性についての実験的検討
- ヒト乳歯の齲蝕と歯質中微量元素濃度との関係
- 1 ヒト永久歯における歯質中のストロンチウム濃度に関する研究
- 1 ヒト永久歯における歯質中のストロンチウム濃度に関する研究
- ネパール王国テチョー村における生活用水の水質再評価 : 砒素とフッ素の精密測定と残留塩素の簡易測定
- ヒト永久歯における健全歯および齲蝕歯歯質中の Mn, Pb および Al 濃度に関する研究 : 特に歯科疾患との関連について
- シスプラチン耐性卵巣癌細胞株におけるブレオマイシン感受性増強のメカニズムに関する検討
- ヒト乳歯歯質中の微量元素濃度と齲蝕に関する研究