Kimyai Soodabeh, Ajami Amir Ahmad, Chaharom Mohammad Esmaeel Ebrahimi, Oskoee Jafar Sadjadi
Department of Operative Dentistry, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran.
Photomed Laser Surg. 2010 Aug;28(4):505-10. doi: 10.1089/pho.2009.2562.
This study compared microleakage of three adhesives in class V (CI V) composite restorations prepared with Er,Cr:YSGG laser.
Changes produced on enamel and dentin surfaces subsequent to laser irradiation influence microleakage of composite restorations.
CI V cavities were prepared in 80 sound extracted human premolars with Er,Cr:YSGG laser. The teeth were randomly divided into 4 groups (n = 20). In group 1, a total-etch adhesive was used, and two-step and one-step self-etch adhesives were used in groups 2 and 3, respectively. Group 4 was the control group with no adhesives. Following restoration and thermocycling, microleakage was evaluated. To compare microleakage in occlusal and gingival margins in each group, the Wilcoxon test was used. Kruskal-Wallis analysis was used for comparison of occlusal and gingival microleakage, and two-by-two comparisons were made using the Mann-Whitney U test.
There were significant differences in microleakage between occlusal and gingival margins in each group except for the control group. Significant differences were observed in occlusal and gingival microleakage among all the groups. Two-by-two comparisons revealed significant differences in occlusal microleakage between the control group and the other groups. There were significant differences in gingival microleakage between groups 1 and 2 and groups 1 and 3; however, differences in gingival microleakage between groups 2 and 3 were not significant.
With all the adhesives, microleakage was significantly higher in gingival margins compared with occlusal margins. In occlusal margins, there were no significant differences in microleakage among the three adhesives. In gingival margins, self-etch adhesives revealed less microleakage than the total-etch adhesive.
本研究比较了用铒铬：钇钪镓石榴石激光制备的V类（CI V）复合树脂修复体中三种粘结剂的微渗漏情况。
激光照射后牙釉质和牙本质表面产生的变化会影响复合树脂修复体的微渗漏。
用铒铬：钇钪镓石榴石激光在80颗完好的拔除人前磨牙上制备CI V类洞。将牙齿随机分为4组（n = 20）。第1组使用全酸蚀粘结剂，第2组和第3组分别使用两步法和一步法自酸蚀粘结剂。第4组为不使用粘结剂的对照组。修复和热循环后，评估微渗漏情况。为比较每组咬合面和龈边缘的微渗漏情况，采用威尔科克森检验。采用克鲁斯卡尔 - 沃利斯分析比较咬合面和龈边缘的微渗漏情况，并使用曼 - 惠特尼U检验进行两两比较。
除对照组外，每组咬合面和龈边缘的微渗漏存在显著差异。所有组的咬合面和龈边缘微渗漏均观察到显著差异。两两比较显示对照组与其他组之间咬合面微渗漏存在显著差异。第1组与第2组以及第1组与第3组之间龈边缘微渗漏存在显著差异；然而，第2组和第3组之间龈边缘微渗漏差异不显著。
使用所有粘结剂时，龈边缘的微渗漏明显高于咬合面边缘。在咬合面边缘，三种粘结剂的微渗漏无显著差异。在龈边缘，自酸蚀粘结剂的微渗漏比全酸蚀粘结剂少。
