Diversity of root canal morphology of maxillary first molars

Juhász Kincső-Réka, K. Mónika, P. Mihai, Pop Silvia, Kerekes-Máthé Bernadette
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Abstract

Abstract Introduction: The morphological characteristics of root canals may show divergent results for different populations. The precise knowledge of the tooth anatomy has a great importance from the point-of-view of the endodontic treatment. The aim of the present study is to map the root canal morphology and anatomical variations of the maxillary first molars on a local population, as well as the study of the possible communications between the canals. Material and method: CBCT images were evaluated during the study using the Ez3D Plus – 3D Imaging Dental Software. Teeth sections were examined in three directions: axial, saggittal and coronal. In case of maxillary first molars with four root canals the presence of an isthmus was evaluated between the two mesiobuccal root canals, on transversal sections. Results: In 23.72% of the cases three root canals were found, while in 76.27% of the cases four root canals were found. No statistically significant differences were found between genders. Among the mesiobuccal root canals the communication was found mostly in the middle third and this was extended to the apical third. Conclusions: Since the communication between the two mesiobuccal root canals is present in most of the cases, the clinicians have to be aware of this in order to achieve a successful therapy. In the majority of the cases the four root canal morphological variation is more freqvent than the three canal variation, but with aging this freqvency is reduced.
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上颌第一磨牙根管形态的多样性
摘要简介:不同种群的根管形态特征可能表现出不同的结果。从牙髓治疗的角度来看,准确的牙齿解剖知识是非常重要的。本研究的目的是绘制当地人群上颌第一磨牙的根管形态和解剖变化,以及研究根管之间可能的通信。材料和方法:在研究期间使用Ez3D Plus - 3D牙科成像软件对CBCT图像进行评估。在轴状、矢状和冠状三个方向检查牙齿切片。在上颌第一磨牙有四个根管的情况下,在两个中颊根管之间的横切面上评估峡部的存在。结果:发现3根管的占23.72%,发现4根管的占76.27%。性别间无统计学差异。在中颊根管中,交通主要分布在中间三分之一,并扩展到根尖三分之一。结论:由于在大多数病例中存在两个中颊根管之间的通信,临床医生必须意识到这一点,以实现成功的治疗。在大多数情况下,四根管的形态变化比三根管的变化更频繁,但随着年龄的增长,这种频率会降低。
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