大鼠牙齿钙沉积的研究  

The Study of the Deposit of Calcium in Rat's Tooth

作　　者：仝健[1] 刘士有[1] 李怀芬[2] 牛惠生[2] 

机构地区：[1]天津医科大学口腔医院,300070 [2]中国协和医科大学中国医学科学院放射医学研究所,300192

出　　处：《口腔医学》2001年第4期176-177,共2页Stomatology

摘　　要：目的:研究大鼠经一次口服给入L-苏糖酸钙、柠檬酸钙、碳酸钙和葡萄糖酸钙钙源制剂后牙齿钙的沉积。方法:采用放射性(45Ca)示踪技术,给入45Ca标记的钙制剂后,通过测量牙齿的放射性水平,计算出钙利用度。结果:成年大鼠牙齿钙沉积与股骨和胸骨的沉积量接近,钙沉积与钙制剂给入量成正比,钙制剂的酸根不同钙的沉积也不同。结论:钙质的充分摄入是牙齿维持正常生理机能的必要条件。Objective:To study of the deposit of calcium from L threonate, gluconate, citrinate and carbonate of calcium sources in rat's tooth.Methods:The oral calcium sources in rats were determined with the levels of radiation after administration of 45Ca labelled preparations. Results:The deposit of calcium in adult rat's tooth was approximate as that in femur and sternum. Extent of calcium bioavailability directly was borne on the dosage of calcium sources in adult rats tooth,the different acid radical of calcium preparation suggested distinct deposit of calcium.Conclusion:Full assimilation of calcium is necessary for tooth to maintain normal physiological function.

关 键 词：牙齿 放射性示踪 钙沉积 钙代谢 口腔疾病 预防 

分 类 号：R780.1[医药卫生—口腔医学]