{"title":"磷灰石的特殊物理化学性质。10. 含铁氟化磷灰石]。","authors":"M Okazaki, J Takahashi, H Kimura","doi":"","DOIUrl":null,"url":null,"abstract":"<p><p>Fe-containing hydroxyapatites and fluoridated hydroxyapatites were synthesized at 80 degrees C and pH 7.4. Fe-containing hydroxyapatites became poorly crystallized with the increase of Fe2+ ions in the solution and a- and c-axis dimensions seemed to decrease slightly. The apparent solubility of Fe-containing hydroxyapatites decreased greatly with the increase of iron content in spite of the decrease in crystallinity. Fe-containing fluoridated apatites were less well crystallized than Fe-free fluoridated apatites. The Fe2+ uptake of fluoridated apatites was independent of fluoride concentration in the solution. a-Axis dimensions of Fe-containing fluoridated apatites decreased with the degree of fluoridation in addition to the decrease related to the substitution of Fe2+ ions. The apparent solubility of Fe-containing fluoridated apatites decreased more than that of Fe-free fluoridated apatites especially at a low fluoride content.</p>","PeriodicalId":77622,"journal":{"name":"Shika zairyo, kikai = Journal of the Japanese Society for Dental Materials and Devices","volume":"9 5","pages":"720-7"},"PeriodicalIF":0.0000,"publicationDate":"1990-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"[Specific physicochemical properties of apatites. 10. Fe-containing fluoridated apatites].\",\"authors\":\"M Okazaki, J Takahashi, H Kimura\",\"doi\":\"\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Fe-containing hydroxyapatites and fluoridated hydroxyapatites were synthesized at 80 degrees C and pH 7.4. Fe-containing hydroxyapatites became poorly crystallized with the increase of Fe2+ ions in the solution and a- and c-axis dimensions seemed to decrease slightly. The apparent solubility of Fe-containing hydroxyapatites decreased greatly with the increase of iron content in spite of the decrease in crystallinity. Fe-containing fluoridated apatites were less well crystallized than Fe-free fluoridated apatites. The Fe2+ uptake of fluoridated apatites was independent of fluoride concentration in the solution. a-Axis dimensions of Fe-containing fluoridated apatites decreased with the degree of fluoridation in addition to the decrease related to the substitution of Fe2+ ions. The apparent solubility of Fe-containing fluoridated apatites decreased more than that of Fe-free fluoridated apatites especially at a low fluoride content.</p>\",\"PeriodicalId\":77622,\"journal\":{\"name\":\"Shika zairyo, kikai = Journal of the Japanese Society for Dental Materials and Devices\",\"volume\":\"9 5\",\"pages\":\"720-7\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1990-09-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Shika zairyo, kikai = Journal of the Japanese Society for Dental Materials and Devices\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Shika zairyo, kikai = Journal of the Japanese Society for Dental Materials and Devices","FirstCategoryId":"1085","ListUrlMain":"","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
[Specific physicochemical properties of apatites. 10. Fe-containing fluoridated apatites].
Fe-containing hydroxyapatites and fluoridated hydroxyapatites were synthesized at 80 degrees C and pH 7.4. Fe-containing hydroxyapatites became poorly crystallized with the increase of Fe2+ ions in the solution and a- and c-axis dimensions seemed to decrease slightly. The apparent solubility of Fe-containing hydroxyapatites decreased greatly with the increase of iron content in spite of the decrease in crystallinity. Fe-containing fluoridated apatites were less well crystallized than Fe-free fluoridated apatites. The Fe2+ uptake of fluoridated apatites was independent of fluoride concentration in the solution. a-Axis dimensions of Fe-containing fluoridated apatites decreased with the degree of fluoridation in addition to the decrease related to the substitution of Fe2+ ions. The apparent solubility of Fe-containing fluoridated apatites decreased more than that of Fe-free fluoridated apatites especially at a low fluoride content.
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