Sooraparaju Sujatha Gopal, Kanumuru Pavan Kumar, Nujella Surya Kumari, Konda Karthik Roy, Reddy K Bala Kasi, Penigalapati Sivaram
Department of Conservative Dentistry & Endodontics, MNR Dental College and Hospital, Telangana, India.
Int J Dent. 2014;2014:685643. doi: 10.1155/2014/685643. Epub 2014 Dec 25.
Aim. To compare and evaluate the microleakage in class V lesions restored with composite resin with and without liner and injectable nanohybrid composite resin. Materials and Methodology. 60 class V cavities were prepared in 30 freshly extracted teeth. After etching and application of bonding agents these cavities were divided into three groups: Group A (n = 20)-restored with composite resin, Group B (n = 20)-flowable composite resin liner + composite resin, and Group C (n = 20)-restored with injectable composite resin. After curing all the specimens were subjected to thermocycling and cyclic loading. Specimens were stained with 0.5% basic fuchsin and evaluated for dye penetration. Results. Results are subjected to Kruskal Wallis and Wilcoxon test. Conclusion. Within the limitations of this study, none of the three materials were free from microleakage. All the three materials showed more microleakage at gingival margins compared to occlusal margins. Among all the groups G-ænial Flo showed the least microleakage at the gingival wall.
目的。比较和评估使用复合树脂、使用和不使用衬层以及注射型纳米混合复合树脂修复Ⅴ类洞的微渗漏情况。材料与方法。在30颗新鲜拔除的牙齿上制备60个Ⅴ类洞。酸蚀并应用粘结剂后，将这些洞分为三组：A组（n = 20）——用复合树脂修复；B组（n = 20）——可流动复合树脂衬层 + 复合树脂；C组（n = 20）——用注射型复合树脂修复。所有标本固化后进行热循环和循环加载。标本用0.5%碱性品红染色，并评估染料渗透情况。结果。结果采用Kruskal Wallis和Wilcoxon检验。结论。在本研究的局限性范围内，三种材料均存在微渗漏。与咬合边缘相比，所有三种材料在牙龈边缘的微渗漏更多。在所有组中，G-ænial Flo在牙龈壁处的微渗漏最少。
