An anatomical investigation of the mandibular second molar using micro-computed tomography

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• 作者：Sara A. Barsness ; Walter R. Bowles ; Alex Fok…
• 关键词：Mandibular second molar ; Micro ; computed tomography ; Canal configurations ; Root wall thickness ; Calcifications
• 刊名：Surgical and Radiologic Anatomy
• 出版年：2015
• 出版时间：April 2015
• 年：2015
• 卷：37
• 期：3
• 页码：267-272
• 全文大小：465 KB
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• 刊物主题：Imaging / Radiology; Orthopedics; Anatomy;
• 出版者：Springer Paris
• ISSN：1279-8517

文摘

Purpose An understanding of root anatomy is an important foundation for providing successful endodontic treatment. The aim of this study was to use micro-computed tomography (micro-CT) to investigate the root anatomy of the mandibular second molar. Methods Eighteen mandibular second molars were scanned using micro-CT. Images were reconstructed, and measurements and observations were recorded regarding pulpal floor anatomy, canal configuration, root wall thickness along the root, presence of calcifications in the pulp chamber and in canals, and apical anatomy. Results/conclusions The most frequently found mesial root canal configuration was Vertucci Type 7 (1-2-1-2), which was seen in 33.3?% of samples. Distal canals were most frequently Vertucci Type 1 (one canal), with 61.1?% of samples showing this configuration. 11.1?% of samples had two canals, 44.4?% of samples had three canals, 33.3?% of samples had four canals, and 11.1?% of samples had five canals at some point along the length of the roots. Average root wall thickness between the mesiobuccal canal and the furcation was 1.23?mm. Mesiolingual canal root wall thickness was on average 1.29?mm, and the distal root furcation wall thickness averaged 1.41?mm. 77.8?% of samples had calcifications present in both the pulp chamber and within the canals.