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首页> 外文期刊>Journal of Clinical and Diagnostic Research >Evaluation of Fracture Resistance of Mandibular Premolar Canals Filled with Four Different Obturation Techniques- An In vitro Stud
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Evaluation of Fracture Resistance of Mandibular Premolar Canals Filled with Four Different Obturation Techniques- An In vitro Stud

机译：用四种不同溶血技术填充颗粒膜骨折性抗裂性的评价 - 体外螺柱

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To prevent the ingress of microorganisms and their byproducts into root canal space is the primary goal of obturation. Endodontically treated teeth are weak and more susceptible to fracture than vital teeth. Therefore, to increase the strength of the root canal and increase root fracture resistance by adhesion and mechanically interlocking root canal filling material with radicular dentin is also one of the goal of obturation.Aim: To evaluate and compare the fracture resistance of mandibular premolar canals filled with four different obturation techniques.Materials and Methods: The in vitro study was conducted in Department of Conservative Dentistry and Endodontics, Krishna Institute of Medical Sciences (Deemed To Be University), Karad, Maharshtra, India, from August 2020 to December 2020. A total of 100 extracted human mandibular premolars with single canals were collected for the study and sectioned horizontally to obtain a standardised length of 14 mm. With the help of 15 K-file (Dentsply) working length was determined and root canals were prepared to an International Organisation for Standardisation (ISO) size 45 file at the apex and flared using a #4 Gates-Glidden drill (Mani, Japan). The teeth were then randomly divided into four experimental groups, Group I-Lateral condensation, Group II-ROEKO GuttaFlow? bioseal, Group IIIGuttacore, Group IV-Thermoplasticised gutta percha (System B) and two control groups, they were Group V-(Negative control), instrumentation was done, but no obturation, Group VI-(Positive control), teeth were neither instrumented nor obturated. All the experimental teeth were filled as per the obturation technique. A universal testing machine was used for evaluating fracture resistance. The results were analysed using the One-way ANOVA test. The significance between the groups was tested with Scheffea€?s post hoc test.Results: There were statistically significant difference among six group for mean fracture load (N) with p-value <0.001. furthermore, pair wise comparison of fracture load (N) showed that the mean difference is significant at p-value <0.05. The mean difference between Group IV and V was not significant (p-value=0.935)Conclusion: Under the limitation of this study, it was concluded that the resistance of the root to vertical fracture amongst the experimental group was maximum in Group III (Guttacore) and minimum in Group IV (Thermoplasticised gutta-percha, System B).
机译：为了防止微生物的进入及其副产物进入根管空间是溶血的主要目标。脊髓处理的牙齿弱，比生命牙齿更容易骨折。因此，为了提高根管的强度并通过粘附和机械互锁的根部管道填充材料与自由牙本质的机械互连的根部管道填充材料也是闭塞的目标之一具有四种不同的取消技术。材料和方法：在克里希纳医学科学研究所（被视为大学），Karad，Maharshtra，India，从2020年8月到2020年12月，在保守牙科和胸内科进行了体外研究。一个收集总共100次提取的人工颌下母毛制锤，用于研究并水平分离，以获得14mm的标准化长度。在15 k-file（lentsply）工作长度的帮助下，确定并将根运河准备到Apex的国际标准化组织（ISO）大小45文件，并使用＃4盖特玻璃（Mani，Japan）燃烧。然后随机将牙齿随机分为四组，Ⅰ组侧缩，II-Roeko Guttaflow？生物膜，IIIguttacore，IV组 - 热塑性Gutta PERCHA（SYSTEM B）和两组对照组，它们是v-（阴性对照），完成仪器，但无闭合，血液血液（阳性对照），牙齿既不仪表也不是扭转的。所有实验牙齿按照均匀技术填充。通用测试机用于评估骨折抗性。使用单向ANOVA测试分析结果。用Scheffea的后HOC测试测试了该组之间的重要性此外，裂缝载荷（n）的一对比较表明，平均差异在p值<0.05时显着。 IV组和V之间的平均差异不显着（p值= 0.935）结论：在本研究的局限下，得出结论是，在实验组中，根本对垂直骨折的抗性最大（Guttacore ）和IV组中的最小值（热塑性Gutta-Percha，System B）。

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