Fluoride-exchanging resins for caries protection.
Fluoride-exchanging resins for caries protection.
复制标题
用于防龋齿的氟化物交换树脂。
DOI：
10.1159/000260646
复制
发表时间：
1983
期刊：
影响因子：
4.2
通讯作者：
Zimmerman,BF
中科院分区：
文献类型：
--
作者：
Rawls,HR;Zimmerman,BF
使用原型阴离子交换树脂处理人工龋损;树脂渗透到龋损孔隙中，硬化，并释放F或Cl离子。第二次脱矿后，测量病变的各种组织学特征。在未治疗的病变进展中，表面区（SZ）减少了75%，病变体增加了86%，而在树脂治疗的病变中，SZ基本保持不变，病变体仅增加了52%。F树脂处理的病变的暗区（DZ）显著大于Cl树脂处理、未处理和初始病变的DZ。在健康釉质中开始损伤后，处理和未处理的釉质的SZ基本相同，但是在处理的釉质中形成稍大的损伤体。脱矿后，F树脂处理釉质的DZ显著大于Cl树脂处理或未处理釉质。在一个单独的实验中，从脱矿牙釉质到pH 4.5缓冲液中的磷酸盐释放速率通过F树脂处理降低了85%，通过Cl树脂处理降低了41%。总之，这两种树脂都是脱矿作用的屏障，释放氟化物的树脂似乎在酸侵蚀期间促进脱矿作用。
Prototype anion-exchanging resins were used to treat artificial carious lesion; The resins penetrate into lesion porosity, harden, and release either F or Cl ions. After second demineralization, various histological features of the lesions were measured. I progression of untreated lesions, surface zones (SZ) decreased by 75% and lesion bodie increased by 86%, while in resin-treated lesions the SZ remained essentially constant ant lesion bodies increased by only 52%. Dark zones (DZ) of F resin-treated lesions wer significantly larger than the DZ of Cl resin-treated, untreated, and initial lesions. After initiation of lesions in sound enamel, the SZ was essentially the same for botl treated and untreated enamel but slightly larger lesion bodies developed in the treate( enamel. After demineralization, the DZ of F resin-treated enamel were significantly larger than in Cl resin-treated or untreated enamel. In a separate experiment the rate of phosphate release from demineralized enamel into i pH 4.5 buffer was decreased by 85% by a F resin treatment and by 41% by a Cl resin treatment. In summary, both resins act as a barrier to demineralization and the fluoride-releasing resin appears to promote remineralization during acid attack.