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首页> 美国卫生研究院文献>Iranian Endodontic Journal >Sealing Ability of Mineral Trioxide Aggregate and Calcium-Enriched Mixture Cement as Apical Barriers with Different Obturation Techniques
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Sealing Ability of Mineral Trioxide Aggregate and Calcium-Enriched Mixture Cement as Apical Barriers with Different Obturation Techniques

机译：不同密闭技术对三氧化二矿骨料和高钙混合水泥作为顶部障碍物的密封能力

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>Introduction: Endodontic treatment in pulpless immature teeth is challenging due to the lack of an apical stop. Insertion of an apical plug is an alternative to conventional long-term apexification with calcium hydroxide. The aim of this study was to compare the apical microleakage of mineral trioxide aggregate (MTA) and calcium-enriched mixture (CEM) cement as apical plugs with three different obturation techniques. >Methods and Materials: This experimental study was conducted on 130 single rooted human teeth with one canal. Samples were randomly divided into 2 experimental groups (n=60) and two negative and positive control groups containing 5 samples each. After cleaning and shaping, an open apex configuration was prepared in all samples. MTA or CEM cement apical plugs with 5 mm thicknesses were placed. Then, each group was divided to 4 subgroups and the remaining space of root canals were filled with either lateral compaction or thermoplasticized injectable gutta-percha or was obturated by filling the entire canal with apical plug material. In one remaining subgroup the canal space was left unfilled. Microleakage was measured by the fluid filtration method and results were analyzed by means of the two-way ANOVA test. >Results: There were no significant differences between microleakage of MTA and CEM cement apical plugs (P=0.92). The difference between three obturation methods was not significant, either (P=0.39). >Conclusion: MTA and CEM cement have similar sealing ability as apical plugs and no significant difference was found in microleakage of the three groups.
机译：>简介：由于缺乏根尖停止功能，在无牙髓未成熟牙齿中进行牙髓治疗具有挑战性。插入顶塞是常规长期用氢氧化钙进行尖顶化的替代方法。这项研究的目的是比较三种不同的封闭技术，将三氧化二矿骨料（MTA）和富钙混合物（CEM）水泥作为顶端塞的顶端微渗漏。 >方法和材料：这项实验研究是对130条单根人牙和一条运河进行的。将样品随机分为2个实验组（n = 60）和两个分别包含5个样品的阴性和阳性对照组。清洁和定型后，在所有样品中准备一个开放的顶点配置。放置厚度为5 mm的MTA或CEM水泥根尖塞。然后，将每组分为4个子组，并用侧向压实或可塑的可注射牙龈胶填充根管的剩余空间，或通过用根尖塞材料填充整个根管来封闭根管。在剩下的一个亚组中，运河空间未被填充。通过流体过滤法测量微渗漏，并通过双向ANOVA测试分析结果。 >结果： MTA和CEM水泥根尖栓的微渗漏之间无显着差异（P = 0.92）。三种封闭方法之间的差异也不显着（P = 0.39）。 >结论： MTA和CEM水泥的密封能力与顶塞相似，并且三组的微渗漏没有显着差异。

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