de Carvalho Gabriel Garcia, Pires Andressa Cavalcanti, de Sousa Frederico Barbosa
Health Sciences Center, Federal University of Paraiba, Cidade Universitária, 58051-900 João Pessoa, Paraiba, Brazil.
Department of Morphology, Health Science Center, Federal University of Paraiba, Cidade Universitaria, 58051-900 João Pessoa, Paraiba, Brazil.
Indian J Dent Res. 2019 Jan-Feb;30(1):52-56. doi: 10.4103/ijdr.IJDR_267_17.
Infiltrant resins were developed to hamper carious lesion progression and mask the whitish appearance of first evidence of caries.
This study aimed at testing the hypothesis that a long application time of resin infiltrant in proximal enamel caries improves esthetic outcome compared to the commercially recommended time.
Twenty teeth with uncavitated inactive proximal white enamel caries lesions (selected by two calibrated examiners; inter-examiner κ = 0.87) were divided into two groups (experimental and control group; n = 10) that agreed regarding lesion surface area. Lesions were infiltrated following the protocol recommended by the manufacturer (two applications, 3 min application first and another 1 min application later; control) and by the protocol tested in this study (one application of 30 min; experimental). Enamel opaqueness (esthetic outcome) was measured by a calibrated examiner (intra-class coefficient of 0.9) before and after infiltration using fluorescence microscopy.
Reduction of enamel opaqueness was significantly higher in the experimental group (40.0% ± 18.5%) than in the control group (18.6% ± 14.9%) (P = 0.0105, one-tailed t-test; Hedge's g of 1.28, 95% confidence interval of 0.43/2.13, and power of 86%).
It can be concluded that the application time of 30 min provides a greater reduction in opaqueness of proximal enamel lesion compared to the application time recommended by the manufacturer. The high effect size could stimulate patients to comply with the treatment time.
渗透树脂的研发旨在阻止龋损进展并掩盖龋齿初期的白色外观。
本研究旨在验证以下假设：与商业推荐时间相比，在邻面釉质龋中长时间应用树脂渗透剂可改善美学效果。
选取20颗患有非龋性静止性邻面白色釉质龋损的牙齿（由两位经过校准的检查者选取；检查者间κ值 = 0.87），根据病损表面积将其分为两组（实验组和对照组；每组n = 10）。按照制造商推荐的方案（两次涂抹，首次涂抹3分钟，随后再涂抹1分钟；对照组）以及本研究测试的方案（一次涂抹30分钟；实验组）对龋损进行渗透处理。在渗透前后，由一位经过校准的检查者（组内系数为0.9）使用荧光显微镜测量釉质不透明度（美学效果）。
实验组釉质不透明度的降低幅度（40.0% ± 18.5%）显著高于对照组（18.6% ± 14.9%）（P = 0.0105，单尾t检验；Hedge's g为1.28，95%置信区间为0.43/2.13，检验效能为86%）。
可以得出结论，与制造商推荐的涂抹时间相比，30分钟的涂抹时间能使邻面釉质病损的不透明度降低幅度更大。高效应量可能会促使患者遵守治疗时间。
