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首页> 外文期刊>Journal of Dentistry >Effect of Topical Application of Fluoride on the Shear Bond Strength of Fissure Sealant
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Effect of Topical Application of Fluoride on the Shear Bond Strength of Fissure Sealant

机译：局部施用氟化物对缝密封胶剪切粘结强度的影响

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Statement of Problem: Pit and fissure sealants and topical fluoride are the most important methods to prevent caries in children and adolescents. It was assumed that application of fluoride materials has a negative effect on the bond of adhesive materials such as fissure sealant to teeth. If this is not proved then fluoride therapy can be done before fissure sealant at the same session. Purpose: The aim of this study was to evaluate the effect of topical fluoride application prior to acid etching on the retention of pit and fissure sealant. Materials and Method: In this experimental in vitro study 28 extracted human permanent premolars were used. Each tooth was embedded in dental stone so that the buccal surface was perpendicular to the long axis of the stone block. The teeth were randomly assigned to two groups ( n =14). The facial surfaces of all the teeth were freshened by 600 grit silicon carbide paper. The specimens were cleaned with rubber cups and aqueous slurry of pumice, and then rinsed and dried. In the test group, APF gel was applied on the enamel surface and left for four minutes. Then, it was rinsed for 15 seconds. In both groups, etching was done with 37% phosphoric acid for 30 seconds, followed by a water spray wash for 30 seconds and drying for 15 seconds. The fissure sealant, Helioseal F, was then applied to the etched enamel, using a cylindrical plastic tube (3mm × 3mm) perpendicular to the buccal surface. The sealant was cured. The plastic matrix was carefully removed and the specimens were placed in distilled water for 72 hours. Shear bond strength was evaluated, using a universal testing machine. A shear force was applied to the tooth at a cross-head speed of 1 mm/min. Data were analyzed with Mann-Whitney test. Results: The mean shear bond strength was 17.7±5.28 for the control and 19.66±4.27 Mpa for the test group. There was no statistically significant difference in the shear bond strengths between the two groups ( p &0.05). Conclusion: The results of this study showed that application of fluoride does not affect the shear bond strength of fissure sealant to the enamel. Key words: Fissure sealant, Shear bond strength, Fluoride.
机译：问题陈述：坑缝密封剂和局部氟化物是预防儿童和青少年龋齿的最重要方法。假定使用氟化物材料对诸如裂缝密封剂之类的粘合材料与牙齿之间的粘结具有负面影响。如果不能证明这一点，则可以在同一疗程之前在缝隙密封剂之前进行氟化物治疗。目的：本研究的目的是评估酸蚀前局部应用氟化物对凹坑和裂缝密封剂保留的影响。材料和方法：在这项实验性体外研究中，使用了28个提取的人类永久性前磨牙。每个牙齿都嵌入牙结石中，以使颊面垂直于石块的长轴。牙齿被随机分为两组（n = 14）。用600粒度的碳化硅纸使所有牙齿的面部表面清新。用橡胶杯和浮石水浆清洗样品，然后漂洗并干燥。在测试组中，将APF凝胶涂在牙釉质表面上，放置4分钟。然后，将其冲洗15秒。在两组中，均用37％磷酸蚀刻30秒，然后喷水清洗30秒并干燥15秒。然后，使用垂直于颊面的圆柱形塑料管（3mm×3mm）将裂缝密封剂Helioseal F涂到蚀刻的瓷釉上。密封剂固化。小心地除去塑料基质，并将样品置于蒸馏水中72小时。使用万能试验机评估剪切粘结强度。剪切力以1 mm / min的十字头速度施加到牙齿上。用Mann-Whitney检验分析数据。结果：对照组的平均剪切粘结强度为17.7±5.28，测试组的平均剪切粘结强度为19.66±4.27 Mpa。两组之间的剪切粘结强度没有统计学上的显着差异（p＞ 0.05）。结论：本研究结果表明，氟化物的使用不会影响缝隙密封剂与牙釉质的剪切粘结强度。关键词：裂隙密封胶，剪切粘结强度，氟化物。

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