一种渗透剂对有/无人造龋的复合树脂修复体边缘封闭的有效性。

Tulunoglu Ozlem, Tulunoglu Ibrahim Fevzi, Antonson Sibel A, Campillo-Funollet Marc, Antonson Donald, Munoz-Viveros Carlos

Clinical Instructor, Department of Pediatric Dentistry, Case Western Reserve University, School of Dental Medicine, Cleveland, Ohio, USA Phone: 2167445884, e-mail:

Associate Professor, Department of Comprehensive Care, Case Western Reserve University School of Dental Medicine, Ohio, USA.

J Contemp Dent Pract. 2014 Nov 1;15(6):717-25. doi: 10.5005/jp-journals-10024-1605.

AIM

The aim of this in vitro study was to evaluate the effectiveness of a resin infiltrant (ICON) on marginal sealing ability of class II resin restorations with/without-caries.

MATERIALS AND METHODS

Forty-eight noncarious human pre-molar teeth were embedded and MO and DO preparations of standard dimensions were prepared. The left side of dentin margins of the cavities were left nonbonded (UB) while the right side were bonded using total etch-bonding agent and all restored with a Nanohybrid composite. The teeth were thermocycled and half of the specimens in the UB and B groups were subjected to an artificial caries process. ICON was applied to caries and noncaries subgroups following the manufacturer's directions. Impressions were made at each step: after the restorations were completed, thermocycling, artificial caries procedures, and infiltrant application and the silicone tag lengths were measured with a stereomicroscope. The specimens were immersed in 0.5% basic fuchsine at 37° C for 24 hours, sectioned and microleakage was evaluated with a stereomicroscope. Selected samples and their replicas were assessed for marginal quality under a stereomicroscope and SEM. Statistical evaluation of the data were made using Kruskal-Wallis, Mann-Whitney U and Wilcoxon Sign Rank tests.

RESULTS

While bonding application did not create a meaningful difference, the thermocycling and artificial caries significantly increased the gap length and microleakage (p < 0.05). ICON application was decreased the microleakage, created gap-free margins and closed the gaps which were previously occurred at the same cavities (p < 0.05).

CONCLUSION

A resin infiltrant (ICON) application decreased the microleakage, created gap-free margins and closed the gaps, which previously occurred at the same cavities.

CLINICAL SIGNIFICANCE

Approximal application of resin infiltrant may increase the success of the class II composite restorations also reduced the risk of needing more complex restoration therapy.

目的

本体外研究旨在评估树脂渗透剂（ICON）对有龋或无龋的Ⅱ类树脂修复体边缘封闭能力的有效性。

材料与方法

将48颗无龋的人类前磨牙包埋，制备标准尺寸的近中（MO）和远中（DO）洞型。洞腔左侧牙本质边缘不粘结（UB），右侧使用全酸蚀粘结剂粘结，均用纳米混合复合树脂修复。对牙齿进行热循环处理，UB组和B组各一半的标本进行人工龋损处理。按照制造商的说明，对有龋和无龋亚组应用ICON。在每个步骤制作印模：修复完成后、热循环后、人工龋损处理后、渗透剂应用后，用体视显微镜测量硅橡胶标签长度。将标本在37℃下浸入0.5%碱性品红中24小时，切片，用体视显微镜评估微渗漏情况。在体视显微镜和扫描电子显微镜下对选定的样本及其复制品进行边缘质量评估。使用Kruskal-Wallis、Mann-Whitney U和Wilcoxon符号秩检验对数据进行统计学评估。