两种改性羟磷灰石生物陶瓷离解度的比较研究  

The Compared studies between Solubilities of Two Modified Hydroxyapatites

作　　者：母瑞虹[1] 赵谌[2] 

机构地区：[1]首都医科大学附属北京口腔医院,100050 [2]北京市口腔医学研究所

出　　处：《口腔材料器械杂志》2000年第1期16-17,39,共3页Chinese Journal of Dental Materials and Devices

摘　　要：目的　两种改性羟磷灰石生物陶瓷离解度的研究。方法　采用离子选择电极法测定两种材料的离解度。结果　随着氟含量增加 ,FHA材料的氟离子离解度降低。随着碳酸盐含量增加 ,CO3 FHA材料氟离子离解度下降 ,而钙离子离解度增加。相同氟含量下 ,CO3 FHA的氟离子离解度小于FHA ,而钙离子离解度大于FHA。结论　两种改性羟磷灰石的离解行为有显著差异。碳酸根离子在材料结构中存在 ,能抑制氟离子的离解 ,促进钙离子离出。碳酸根离子对材料离解度的影响较为明显。Objective To study the solubilities of two modified hydroxyapatites. Method The FHAs and CO 3 FHAs were prepared by wet method. The contents of F - and Ca 2+ were measured by ion choice electrode. Results F - solubility decreased with increasing the fluoride contents in FHA and the carbonate contents in CO 3 FHA. F - solubility of CO 3 FHA is less than that of FHA at the same fluoride content,but Ca 2+ solubility is much more.Conclusion The dissociation behavior of two modified hydroxyapatites has remarkable difference. There exists CO 3 2- in material structure,which can restrain dissociation of F - and promote dissociation of Ca 2+ .

关 键 词：改性羟磷灰石 离解度 氟 比较研究 生物陶瓷 

分 类 号：R783.1[医药卫生—口腔医学]