Int J Periodontics Restorative Dent. 2023 Oct 24(7):s129-s145. doi: 10.11607/prd.4866.
To evaluate the marginal leakage of three different types of bonding agents used with two posterior composites and a giomer, available commercially.
Class II box-only cavities were prepared on 90 mandibular first molars with margins extending 1 mm beyond the cementoenamel junction. The samples were divided into nine groups based on three different bonding agents, two different composites, and a giomer. Cavities were restored per the manufacturer's description. Teeth were subjected to a thermocycling procedure (500×, 5°C to 55°C) and dye penetration by immersing in a 2% methylene blue solution (Merck Specialties) for 24 hours. The marginal adaptation was evaluated as a continuous margin at the gingival level under a stereomicroscope. The results were analyzed using the Kruskal-Wallis and Mann-Whitney U tests.
The results of the groups with the total-etch technique showed no statistical difference between the nanohybrid Filtek Z250 XT (3M ESPE) and fine hybrid SwissTEC composite (Coltène\Whaledent AG). The groups with the self-etch technique showed no statistical difference when used with either of the two composites. The acid-etch technique showed better marginal adaptation than the self-etch technique. When the giomer (Beautifil II, Shofu) was used with the total-etch technique, it showed better adaptation than when used with the self-etch technique but overall showed more marginal leakage than the composites.
The total-etch technique provided better marginal adaptation for the composites and giomer compared to the self-etch technique.
The demand for esthetic restorations continues to increase, and composite restorations are now considered the material of choice for Class II cavities. There are various concerns with composite restorations, one of them being good marginal adaptation to increase the life of the restoration. This study evaluated marginal leakage with the nanohybrid composite Filtek Z250 XT, fine hybrid composite SwissTEC, and a giomer when used with the total-etch technique and self-etch technique and reported satisfactory adaptation with the total-etch technique.
评估三种不同类型的粘结剂与两种后牙复合材料和一种玻璃离子水门汀联合使用时的边缘渗漏情况，这些材料均为市售产品。
在 90 颗下颌第一磨牙上制备仅盒状Ⅱ类洞，边缘延伸至釉牙骨质界 1mm 以外。根据三种不同的粘结剂、两种不同的复合材料和一种玻璃离子水门汀，将样本分为 9 组。按照制造商的说明进行窝洞修复。将牙齿进行热循环处理（500 次，5°C 至 55°C），然后将其浸入 2%亚甲蓝溶液（Merck Specialties）中 24 小时以进行染料渗透。在立体显微镜下，通过评估龈缘处的连续边缘来评估边缘适应性。使用 Kruskal-Wallis 和 Mann-Whitney U 检验对结果进行分析。
全酸蚀技术组中纳米复合树脂 Filtek Z250 XT（3M ESPE）和精细混合瑞士 Tec 复合材料（Coltène\Whaledent AG）之间的结果无统计学差异。自酸蚀技术组中，两种复合材料之间的结果无统计学差异。酸蚀技术的边缘适应性优于自酸蚀技术。当全酸蚀技术与玻璃离子水门汀（Beautifil II，Shofu）联合使用时，其边缘适应性优于自酸蚀技术，但总体而言边缘渗漏情况比复合材料更严重。
与自酸蚀技术相比，全酸蚀技术为复合材料和玻璃离子水门汀提供了更好的边缘适应性。
对美观修复的需求不断增加，复合树脂修复体现在被认为是Ⅱ类洞的首选材料。复合树脂修复体存在诸多问题，其中之一是良好的边缘适应性，以增加修复体的寿命。本研究评估了纳米复合树脂 Filtek Z250 XT、精细混合复合树脂 SwissTEC 和玻璃离子水门汀在全酸蚀技术和自酸蚀技术下的边缘渗漏情况，结果表明全酸蚀技术具有良好的适应性。
