| Japanese |
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| Title | 45Caによる歯牙硬組織を中心とした無機質代謝の研究 |
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| Subtitle | 原著 |
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| Authors | 岡伸光* |
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| Authors(kana) | |
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| Organization | *岐阜県立医科大学口腔外科 (主任 茂田貫一教授) |
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| Journal | 核医学 |
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| Volume | 3 |
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| Number | 3 |
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| Page | 125-165 |
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| Year/Month | 1966/9 |
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| Article | 原著 |
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| Publisher | 日本核医学会 |
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| Abstract | 「1. 諸言」硬組織を構成する成分のうち, 無機質の占める比率は, 骨では65%, 象牙質は69%, エナメル質では97%で, この無機質の組成はCaとPO3が主成分で, そのほかCO2, Mg, Na, K, Fe, Zn, Cl, Fなどが少量存在している. これらのうちでもCaがもっとも多量で, 人骨では20%象牙質では27%, エナメル質では36%を占めている. そしてこれらの無機塩はアパタイトと呼ばれる複雑な結晶構造をもつ化合物で, Ca10・(PO4)6・(OH)2のhydroxyapatiteにもっとも近い組成であるとされている. このアパタイトの物理化学的性質についてはin vitroの実験においては, かなり明確に解明せられているが, 生体内における詳細な実験報告は少なく, 石灰化の機構とともにいまだ十分な理論的説明はなされていない. |
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| Practice | 臨床医学：一般 |
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| Keywords | |
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| English |
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| Title | Studies on the Metabolism of In organic Substances in the Hard Tissue by 45Ca |
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| Subtitle | |
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| Authors | Nobumitu Oka |
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| Authors(kana) | |
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| Organization | Department of Oral Surgery, Gifu Prefectural Medical School (Director : Prof. Kanichi Shigeta) |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 3 |
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| Number | 3 |
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| Page | 125-165 |
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| Year/Month | 1966/9 |
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| Article | Original article |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | Dogs and rats were used for this study and the inorganic 45Ca in their teeth and peripheral hard tissue were determined. [Results] The deciduous and permanent teeth of diphyodontia showed very active metabolic changes of inorganic substances in plastic stage, however, later the change were slow down. After the dentition and the completion of the dental root, the movement or the exchange of inorganic substances to dental tissue was performed through the dental pulp and the pericementium. Those to the enamel tissue was also performed through saliva besides above mentioned two ways. The turnover of inorganic substances of the permanent teeth was less active than the deciduous and was decreased with the age. The enamel tissue seemed to have biologically active metabolism as living tissue. Bone has always active metabolism and is playing an important role as reservoir controlling the balance of inorganic salt in the body fluid. |
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| Practice | Clinical medicine |
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