Jacob Gifty, Goud K Mallikarjun
Department of Conservative Dentistry and Endodontics, Bapuji Dental College and Hospital, Davangere, Karnataka, India.
J Conserv Dent. 2023 Jan-Feb;26(1):83-87. doi: 10.4103/jcd.jcd_444_22. Epub 2022 Dec 8.
To compare the microleakage of Filtek bulk fill posterior and Beautifil II LS composites in Class II cavities using stereomicroscope.
A total of 34 extracted teeth were randomly divided into two groups. Teeth were prepared and mounted on a plaster block. In each tooth, Class II cavities were prepared, following which the cavities were etched and bonded. In Group I, 17 teeth were restored with Filtek bulk fill posterior composite in bulk fill technique and in Group II, 17 teeth were restored with Beautifil II LS following manufacture's instructions. The samples were then thermocycled and then the tooth were immersed in 1% methylene blue for 24 h and were divided into two halves mesiodistally using a diamond disc at low speed. Then, all the sections were observed under a stereomicroscope at ×10 magnification.
Mann-Whitney U-test displayed a statistically significant higher mean rank among Filtek bulk fill group (mean rank = 23.09) when compared to Beautifil II LS composite group (mean rank = 11.91).
The study concluded that in Class II restorations, Beautifil II LS showed significantly less microleakage than Filtek bulk fill posterior.
使用体视显微镜比较Filtek大容量充填后牙复合材料和Beautifil II LS复合材料在II类洞中的微渗漏情况。
总共34颗拔除的牙齿被随机分为两组。将牙齿制备并固定在石膏块上。在每颗牙齿上制备II类洞，随后对洞进行酸蚀和粘结。在第一组中，17颗牙齿采用大容量充填技术用Filtek大容量充填后牙复合材料修复，在第二组中，17颗牙齿按照制造商的说明用Beautifil II LS修复。然后对样本进行热循环，接着将牙齿浸入1%的亚甲蓝中24小时，并使用低速金刚石圆盘沿近远中方向将牙齿切成两半。然后，在体视显微镜下以×10放大倍数观察所有切片。
与Beautifil II LS复合材料组（平均秩次 = 11.91）相比，Mann-Whitney U检验显示Filtek大容量充填组（平均秩次 = 23.09）的平均秩次在统计学上显著更高。
该研究得出结论，在II类修复体中，Beautifil II LS的微渗漏明显少于Filtek大容量充填后牙复合材料。
