Effect of two irrigation protocols and obturation techniques on the apical sealing ability of different root canal sealers: An in vitro study
Effect of two irrigation protocols and obturation techniques on the apical sealing ability of different root canal sealers: An in vitro study
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两种冲洗方案和封闭技术对不同根管封闭剂根尖封闭能力的影响：体外研究
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发表时间：
2020
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通讯作者：
Mohamed El Sayed
中科院分区：
文献类型：
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作者：
Mohamed El Sayed
摘要目的：本研究的目的是比较两种冲洗方案和充填技术对三种根管封闭剂根尖封闭的影响。材料与方法：选取130颗单根患牙的牙冠，并选取10个牙根作为对照，其余牙根根据冲洗方案和充填技术的不同分为4个实验组（n = 30）。根据根管充填的类型，每组又分为3个亚组（n = 10）。所有根管均用F4号Protaper Universal预备，并用3%次氯酸钠（NaOCl）+ 3%过氧化氢（H2 O2）（第1组和第3组）或3% NaOCl + 2%洗必泰（CHX）（第2组和第4组）冲洗。使用了两种牙胶充填技术：单锥（组1和2）和连续波（组3和4）技术。测试了以下密封器：MTA Fillapex（亚组A）、AH Plus（亚组B）和Realseal SE（亚组C）。采用染料渗透法评价根尖封闭性，并对数据进行统计学分析。结果如下：在第一组中，AH Plus显示出最好的根尖封闭（0.46 ± 0.098 mm），而RealSeal SE系统显示出最差的根尖封闭（3.47 ± 0.434 mm）。在第二组中，MTA Fillapex（0.58 ± 0.115 mm）和AH Plus（0.63 ± 0.109 mm）显示出最佳的根尖封闭。在第三组和第四组中，所有类型的密封器均显示出相似的高泄漏模式。在第三组中观察到RealSeal的顶端密封显著增加（1.71 ± 0.453 mm）。结论：根管冲洗方法和根管充填技术对根管封闭效果有影响。当使用单锥技术时，AH Plus + NaOCl + H2 O2和MTA Fillapex + NaOCl + CHX灌注方案显示出显著的高根尖封闭。RealSeal SE显示，当根管用NaOCl/H2 O2冲洗并用单锥技术填充时，根尖封闭最差。当与连续波技术一起使用时，所有凝闭器均显示出较差的结果。
Abstract Aim: The aim of this study was to compare the influence of two irrigation protocols and obturation techniques on the apical seal of three endodontic sealers. Materials and Methods: Crowns of 130 single-rooted teeth were cut and 10 roots were selected as controls, and the remaining roots were divided into four experimental groups (n = 30) according to the type of irrigation protocol and obturation technique. Each group was divided into three subgroups (n = 10) according to the type of root canal sealer. All root canals were prepared with size F4 Protaper Universal and irrigated with 3% sodium hypochlorite (NaOCl) + 3% hydrogen peroxide (H2O2) (Groups 1 and 3) or 3% NaOCl + 2% chlorhexidine (CHX) (Groups 2 and 4). Two gutta-percha obturation techniques were used: single-cone (Groups 1 and 2) and continuous wave (Groups 3 and 4) techniques. The following sealers were tested: MTA Fillapex (Subgroup A), AH Plus (Subgroup B), and Realseal SE (Subgroup C). The apical seal was assessed using dye penetration method, and the data were statistically analyzed. Results: In the first group, AH Plus showed the best apical seal (0.46 ± 0.098 mm), while RealSeal SE system showed the worst apical seal (3.47 ± 0.434 mm). In the second group, MTA Fillapex (0.58 ± 0.115 mm) and AH Plus (0.63 ± 0.109 mm) showed the best apical seal. In the third and fourth groups, all types of sealers showed similar high leakage patterns. Marked increase in the apical seal of RealSeal was observed in the third group (1.71 ± 0.453 mm). Conclusions: The type of irrigation protocol and obturation technique could affect the apical seal of tested sealers. When the single-cone technique was used, AH Plus with NaOCl + H2O2 and MTA Fillapex with NaOCl + CHX irrigation protocols showed significantly a high apical seal. RealSeal SE showed the worst apical seal when canals were irrigated with NaOCl/H2O2 and filled with the single-cone technique. All sealers showed inferior results when used with the continuous wave technique.