Description of the root anatomy of the primary molars using high resolution computed microtomography (Micro-CT). An analysis of three-dimensional root canal system.

IF 1.5 Q3 DENTISTRY, ORAL SURGERY & MEDICINE
Frontiers in dental medicine Pub Date : 2025-01-06 eCollection Date: 2024-01-01 DOI:10.3389/fdmed.2024.1522414
Benedetta Vidi, Ana María Gil-Valcarcel, Cristina Obispo-Diaz, Isabel Sanchez-Jorge, Jesús Mena-Álvarez, Juan Manuel Aragoneses-Lamas, Cristina Rico-Romano
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引用次数: 0

Abstract

Background/purpose: This study aimed to describe the root canal morphology of primary molars using Micro-CT and analyse the three-dimensional images of the internal root canal system.

Material and methods: One hundred and twenty extracted primary molars with one or more completed roots were scanned with Micro-CT. Three fixed heights of the roots were determined at axial level and the analysed criteria were: dentine thickness, diameter of roots canals, presence of lateral canals, isthmus and number of foramina. Vertucci's classification was also studied.

Results: Vertucci Type I was more prevalent in palatal and mesio-buccal root of superior molar and distal root of inferior molars. Type IV was more frequent in the mesial root. Dentine thickness was studied at three levels and for all the surfaces of the root canal. In the mesiobuccal root, in the middle and apical third, the mean in the upper molars is significantly higher than in the lower molars. The mesio-lingual canal has the major mean in mesio-distal and bucco-lingual diameter at coronal third. Isthmus were found mostly in the mesial root in all three levels. The high number of foramina and lateral canals were located at apical third of the mesial and mesio-buccal roots.

Conclusion: This study showed the complexity and variability of the root canal morphology of primary molars. The Micro-CT images gave important information about the internal anatomy of the primary molars.

使用高分辨率计算机微断层扫描(Micro-CT)描述初生磨牙的根解剖结构。三维根管系统的分析。
背景/目的:本研究旨在利用Micro-CT描述初生磨牙根管形态,并分析内根管系统的三维图像。材料和方法:用Micro-CT扫描120颗拔牙的一根或多根完整的磨牙。在轴向水平确定根的三个固定高度,分析标准为:牙本质厚度、根管直径、有无侧根管、峡部和孔数。本文还研究了Vertucci的分类。结果:上磨牙腭根、中颊根和下磨牙远端根以ⅰ型疣型多见。IV型多见于中根。牙本质的厚度在三个水平和根管的所有表面进行了研究。在中颊根、中间和根尖三分之一处,上磨牙的平均值明显高于下磨牙。中舌根管在中远端和冠状三分之一的颊舌根管直径中有主要的平均值。峡部主要分布在三个水平的中根。大量的孔和外侧管位于中颊根和中颊根的根尖三分之一处。结论:本研究显示了初生磨牙根管形态的复杂性和多变性。显微ct图像提供了有关初级磨牙内部解剖结构的重要信息。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
2.10
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审稿时长
13 weeks
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