Dijkman G E, Arends J
Laboratory for Materia Technica, Groningen, The Netherlands.
Caries Res. 1992;26(5):351-7. doi: 10.1159/000261467.
In the literature, secondary caries around composite restorations is reported often. Fluoridated composites are therefore interesting materials because they might reduce or inhibit secondary caries. In this article an in situ model investigation is presented in which the effect of F-releasing composites on enamel demineralisation around an artificial gap of 200 microns width was quantified after 1 month. The fluoride content of the composites varied between 0 and 26 vol%. The beneficial effect of the fluoride released was larger in the gap than at the outer enamel surface. In the gap, all fluoridated composites reduced the enamel demineralisation statistically significantly with respect to the non-fluoridated control. Microradiography showed a reduction of lesion depth values of 27-45%, and a reduction of mineral loss values of 25-56%. At the outer enamel surface next to the artificial gap, a beneficial fluoridation effect was measurable only near the most fluoridated composite. The results indicate that fluoridated composites may play a role in the future prevention of secondary caries.
在文献中，复合树脂修复体周围继发龋的报道屡见不鲜。因此，含氟复合树脂是一种有趣的材料，因为它们可能会减少或抑制继发龋。本文介绍了一项原位模型研究，其中在1个月后对宽度为200微米的人工间隙周围的含氟复合树脂对牙釉质脱矿的影响进行了量化。复合树脂的氟含量在0至26体积%之间变化。在间隙中，释放的氟化物的有益作用比在外层牙釉质表面更大。在间隙中，所有含氟复合树脂相对于未含氟对照在统计学上均显著降低了牙釉质脱矿。显微放射照相显示病变深度值降低了27 - 45%，矿物质损失值降低了25 - 56%。在人工间隙旁边的外层牙釉质表面，仅在含氟量最高的复合树脂附近可测量到有益的氟化作用。结果表明，含氟复合树脂可能在未来继发龋的预防中发挥作用。
