Attin Thomas, Buchalla Wolfgang, Hellwig Elmar
Department of Operative Dentistry, Preventive Dentistry and Periodontology, Georg-August-Universität Göttingen, Robert-Koch-Str. 40, D-37075 Göttingen, Germany.
Dent Mater. 2006 Apr;22(4):308-13. doi: 10.1016/j.dental.2005.04.023. Epub 2005 Aug 9.
This in vitro study assesses toothbrushing abrasion of a microfill (Heliomolar Radioopaque) and a hybrid composite (Herculite XRV) after application of two acidic fluoride agents.
Thirty-six specimens of each resin composite were fabricated, ground flat and polished. Subsequently the 36 samples of each material were evenly assigned to three groups. In the first group, samples were treated with the fluoride varnish Bifluorid 12 (5.5% F, pH 5.6), in the second group with Elmex Fluid (1.25% F, pH 4.3). In the third group, specimens remained unfluoridated (controls). After 8h, the samples were subjected to toothbrushing abrasion (2000 brushing strokes, load: 250 g) in an abrasive slurry. Fluoridation and brushing abrasion were repeated twice. Afterwards, abrasion of the materials was quantitatively determined with a laser profilometer and statistically analyzed (ANOVA).
With Herculite both, Bifluorid 12 (P = 0.0001) and Elmex Fluid (P = 0.0001) led to a significant increase of brushing abrasion compared to the non-fluoridated group. However, no significant difference was observed between the two fluoridation regimes. Heliomolar showed a tendency towards higher abrasion after treatment with Elmex Fluid compared to Bifluorid 12 (P = 0.0496) and the non-fluoridated group (P = 0.0496), whereas treatment with Bifluorid 12 yielded no significant difference compared to the non-fluoridated Heliomolar specimens. Fluoridation of Herculite resulted in a 106-121% increase of abrasion, whereas Heliomolar only showed an increase by 5-30%. Application of the acidic fluoride products used led to an increase in toothbrushing abrasion of the tested composite restorative materials. However, clinical long-term studies are needed to determine the effect of topical fluoride regimes on resin composite materials.
本体外研究评估了两种酸性氟化物制剂应用后，微填料型（不透射线的Heliomolar）和混合型复合树脂（Herculite XRV）的刷牙磨损情况。
制备每种树脂复合材料的36个样本，磨平并抛光。随后，将每种材料的36个样本平均分为三组。第一组样本用氟化物 varnish Bifluorid 12（5.5% F，pH 5.6）处理，第二组用Elmex Fluid（1.25% F，pH 4.3）处理。第三组样本不进行氟化处理（对照组）。8小时后，将样本置于研磨剂浆液中进行刷牙磨损测试（2000次刷牙冲程，负载：250克）。氟化和刷牙磨损过程重复两次。之后，用激光轮廓仪定量测定材料的磨损情况，并进行统计学分析（方差分析）。
对于Herculite，与未氟化组相比，Bifluorid 12（P = 0.0001）和Elmex Fluid（P = 0.0001）均导致刷牙磨损显著增加。然而，两种氟化方案之间未观察到显著差异。与Bifluorid 12（P = 0.0496）和未氟化组（P = 0.0496）相比，用Elmex Fluid处理后，Heliomolar显示出更高的磨损趋势，而用Bifluorid 12处理与未氟化的Heliomolar样本相比无显著差异。Herculite的氟化导致磨损增加106 - 121%，而Heliomolar仅增加5 - 30%。所使用的酸性氟化物产品的应用导致测试的复合树脂修复材料的刷牙磨损增加。然而，需要进行临床长期研究来确定局部用氟方案对树脂复合材料的影响。
