MTA,iRoot BP Plus和nRoot BP修补髓底穿孔封闭性体外研究

doi:10.13701/j.cnki.kqyxyj.2024.01.010

摘要/Abstract

摘要： 目的:评价3种材料Mineral trioxide aggregate(MTA)、iRoot BP Plus和nRoot BP修复磨牙髓底穿孔的封闭能力及边缘适应性。方法:收集符合标准的恒磨牙62颗,开髓、制备髓底穿孔后随机分为3个实验组(n=18),A组(MTA组)、B组(iRoot BP Plus组)、C组(nRoot BP)和2个对照组(n=4),D组(阳性对照组)、E组(阴性对照)。从3个实验组中各随机选4个样本用扫描电子显微镜观察髓室底与修复材料间间隙宽度。剩余样本在1%的碱性品红溶液中浸泡48 h,用染料渗透法检测评估修复部位的封闭效果。结果:A、B、C三组染料渗透差异有统计学意义(P<0.05)。MTA比iRoot BP Plus、nRoot BP的染料穿透性更大。扫描电镜下,iRootBP Plus、nRootBP与髓室底间的间隙宽度小于MTA,3组间差异有统计学意义(P<0.05)。结论:iRootBP Plus和nRootBP在修补髓底穿孔时展示了较好的封闭性和边缘适应性。

关键词: MTA, 生物陶瓷, 髓室底穿孔, 封闭性

Abstract: Objective: To evaluate the sealing ability and marginal adaptability of mineral trioxide aggregate (MTA; Group A), iRoot BP Plus (Group B), and nRoot BP (Group C) in the treatment of perforation in vitro. Methods: Sixty-two teeth, which were access opened and prepared furcation perforations, were randomly divided into three experimental groups (A, B, C, n=18) and two controls (D, E, n=4). Following the repair procedure, four samples from three experimental groups were randomly selected to measure the gap between the pulpal floor and the repair material with a scanning electron microscope, and the other specimens were immersed in 1% basic fuchsine solution for 48 hours to evaluate the dye penetration under the stereomicroscope. Results: There was significant difference in the microleakage among three experimental groups (P<0.05). MTA had more dye penetration than iRoot BP Plus and nRoot BP. Under scanning electron microscopy, the gaps of both nRoot BP and iRoot BP Plus were smaller than that of MTA, and there was a statistically significant difference between three experimental groups (P<0.05). Conclusion: iRoot BP Plus and nRoot BP had better sealing performance and marginal adaptability when used to repair the furcation perforation.

Key words: MTA, bioceramics, perforation of pulpal floor, sealing

张艳丽, 肖海波, 陶慧敏, 陈巧. MTA,iRoot BP Plus和nRoot BP修补髓底穿孔封闭性体外研究[J]. 口腔医学研究, 2024, 40(1): 51-55.

ZHANG Yanli, XIAO Haibo, TAO Huimin, CHEN Qiao. Sealing Effectiveness of MTA, iRoot BP Plus, and nRoot BP in Treatment of Furcation Perforation In Vitro[J]. Journal of Oral Science Research, 2024, 40(1): 51-55.

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