Shashikiran N D, Kumar N C, Subba Reddy V V
Department of Pedodontics and Preventive Dentistry, College of Dental Sciences, Davangere-577 004, Karnataka.
J Indian Soc Pedod Prev Dent. 2003 Dec;21(4):125-30.
The present study was performed to compare the amount of in vitro fluoride uptake by enamel and dentin from fluoridated bonding agent with non-fluoridated composite (Group I), non-fluoridated bonding agent with fluoridated composite (Group II) and fluoridated bonding agent with fluoridated composite resin (Group III). Sixty extracted premolars were selected and divided into three groups of 20 teeth each. Restorative materials were applied according to manufacturer's instructions into standard windows created in the teeth, cured and placed in de-ionised water for three months. The fluoride content of successive acid etch biopsy was determined by specific ion-electrode analysis. Although significant amount of fluoride uptake occurred in all the test groups, fluoride uptake was found to be highly significant in dentin when compared to enamel in Group, I, II and III (P<0.001). The fluoride uptake was greater by both enamel and dentin in Group III ie fluoridated bonding agent with fluoridated composite resin.
本研究旨在比较含氟粘结剂与不含氟复合材料（第一组）、不含氟粘结剂与含氟复合材料（第二组）以及含氟粘结剂与含氟复合树脂（第三组）的牙釉质和牙本质的体外氟摄取量。选取60颗拔除的前磨牙，分为三组，每组20颗牙。按照制造商的说明将修复材料应用于牙齿上制作的标准窗口中，固化后置于去离子水中三个月。通过特定离子电极分析法测定连续酸蚀活检的氟含量。尽管所有测试组均出现了显著的氟摄取，但在第一组、第二组和第三组中，与牙釉质相比，牙本质中的氟摄取量被发现具有高度显著性（P<0.001）。第三组（即含氟粘结剂与含氟复合树脂）的牙釉质和牙本质摄取的氟更多。
