Purpose

To determine whether warm-air stream for solvent evaporation improves immediate and long-term bond strength of adhesive systems through a systematic review and meta-analysis.

Materials and methods

PubMed, ISI Web of Science, Cochrane Library, SciELO, Scopus, and BVS, as well as Open Grey, were searched for relevant studies. Only in vitro studies reporting the effect of the use of warm-air stream to evaporate solvents of adhesive systems on the bond strength to enamel or dentin, were included. A global analysis compared the standardized mean difference between bond strength values using warm-air stream against a control group in which room-temperature air-stream was used. Bond strength from etch-and-rinse and self-etch adhesives was analyzed separately using the random-effects model at a significance level of α = 0.05. For each adhesive type, subgroup analyses were performed considering the type of solvent with which the adhesives were formulated.

Results

A total of 10 in vitro studies were included in the meta-analysis. For etch-and-rinse or self-etch adhesives, the use of warm-air stream for adhesive solvent evaporation improved the bond strength to dentin of water- or alcohol-based adhesive systems (p ≤ 0.03). On the contrary, this effect could not be observed for acetone-based adhesive systems (p ≥ 0.13). The overall effect demonstrated bond strength was enhanced with the use of warm-air stream (p ≤ 0.03).

Conclusion

The in vitro evidence suggests that bond strength of self-etch or etch-and-rinse adhesives could be improved by using warm-air stream for solvent evaporation.

中文翻译：

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溶剂蒸发的热气流对胶粘剂体系粘合强度的影响：体外研究的系统综述和荟萃分析

目的

通过系统的审查和荟萃分析，确定用于溶剂蒸发的热气流是否能改善胶粘剂系统的即时和长期粘结强度。

材料和方法

搜索PubMed，ISI Web of Science，Cochrane图书馆，SciELO，Scopus和BVS以及Open Grey，以进行相关研究。仅包括体外研究报道了使用热气流蒸发粘合剂体系的溶剂对牙釉质或牙本质粘合强度的影响。整体分析比较了使用暖气流与使用室温气流的对照组之间的粘合强度值之间的标准化平均差。使用随机效应模型在显着性水平α= 0.05时分别分析了蚀刻和冲洗粘合剂以及自蚀刻粘合剂的粘合强度。对于每种粘合剂类型，考虑了配制粘合剂所用溶剂的类型进行了亚组分析。

结果

荟萃分析共包括10项体外研究。用于蚀刻和漂洗或自蚀刻粘合剂，粘合剂的溶剂蒸发使用温热空气流的改进的粘合强度，以水基或醇基粘合剂体系（牙本质p  ≤0.03）。相反，不能为丙酮基粘合剂体系（可以观察到这种效果p  ≥0.13）。整体效果证明粘结强度与使用暖空气流中（增强的p  ≤0.03）。

结论

体外证据表明，通过使用热气流进行溶剂蒸发可以提高自蚀刻或蚀刻漂洗粘合剂的粘结强度。