Machado Ricardo, Koetz Ricardo, Comparin Daniel, Alberton Luiz Rômulo, da Fonseca Roberti Garcia Lucas, Xavier da Silva Neto Ulisses
Department of Endodontics, School of Health and Bioscience, Pontifical Catholic University of Paraná, Curitiba, Paraná, Brazil.
Department of Endodontics, School of Dentistry, Paranaense University, Francisco Beltrão, Paraná, Brazil.
Eur J Dent. 2021 Jul;15(3):568-573. doi: 10.1055/s-0041-1724158. Epub 2021 Feb 23.
This study aimed to evaluate the existence of possible correlations among root canal configuration, quality of filling, and its sealability.
Sixty human mandibular central incisors were selected for this study. The teeth were prepared with the Profile 04 system up to instrument 35/0.04 and irrigated with 2.5 mL of 2.5% sodium hypochlorite at each instrument change. Root canal filling was performed by the lateral compaction technique, using gutta-percha and an epoxy resin-based sealer (AH Plus) labeled with 0.1% Rhodamine B dye. Afterward, the specimens were submitted to fluid filtration tests to assess the sealability of the filling. Cross-sections were obtained at -3, -6, and -8 mm from the root apex and submitted to a metallographic treatment to determine the root canal configuration and the percentage of gutta-percha filled areas. The data were statistically analyzed by the Grubbs test. Pairs of correlations were analyzed by applying the Spearman test at a level of significance of 5%.
No correlation was observed among the analyzed variables as follows: root canal configuration versus filling quality (Spearman's rho = 0.031); filling quality versus sealability (Spearman's rho = 0.219); and root canal configuration versus sealability (Spearman's rho = 0.184).
The root canal configuration did not affect the quality of the filling and its sealability.
本研究旨在评估根管形态、充填质量及其封闭性之间可能存在的相关性。
本研究选取了60颗人类下颌中切牙。使用Profile 04系统对牙齿进行预备，直至使用35/0.04器械，并在每次更换器械时用2.5 mL 2.5%的次氯酸钠冲洗。采用侧向加压技术进行根管充填，使用含有0.1%罗丹明B染料标记的牙胶和环氧树脂类封闭剂（AH Plus）。之后，对标本进行液体过滤测试以评估充填的封闭性。在距根尖-3、-6和-8 mm处获取横断面，并进行金相处理以确定根管形态和牙胶充填区域的百分比。数据采用格拉布斯检验进行统计学分析。通过应用Spearman检验在5%的显著性水平下分析成对相关性。
在所分析的变量之间未观察到相关性，如下所示：根管形态与充填质量（Spearman相关系数=0.031）；充填质量与封闭性（Spearman相关系数=0.219）；根管形态与封闭性（Spearman相关系数=0.184）。
根管形态不影响充填质量及其封闭性。
