Hyoung-Hoon Jo, Ara Cho, Su-Min Lee, Bekir Karabucak, Ho-Keel Hwang
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引用次数: 0
Abstract
This study evaluated angular and linear positional changes of the second mesiobuccal (MB2) canal orifice in maxillary first molars and proposed a guideline for its localization. Twenty-eight extracted maxillary first molars with four canals were analysed. After access cavity preparation, all canals except MB2 were instrumented. The initial and final MB2 orifice positions were defined as MB2a and MB2b, respectively, following selective dentine removal and canal preparation. Standardized microscopic images were obtained, and the angle between the MB1-MB2 and DB-P lines, as well as inter-orifice distances, were measured using paired t-tests (α = 0.05). MB2 canals were identified in all specimens. The mean angle significantly changed from -21.84° ± 8.87° to +8.38° ± 8.95° (p < 0.05), indicating a mesial shift and increased parallelism. Mean displacement was 1.07 ± 0.39 mm. A DB-P-parallel direction may aid predictable MB2 localization in maxillary first molars.
期刊介绍：
The Australian Endodontic Journal provides a forum for communication in the different fields that encompass endodontics for all specialists and dentists with an interest in the morphology, physiology, and pathology of the human tooth, in particular the dental pulp, root and peri-radicular tissues.
The Journal features regular clinical updates, research reports and case reports from authors worldwide, and also publishes meeting abstracts, society news and historical endodontic glimpses.
The Australian Endodontic Journal is a publication for dentists in general and specialist practice devoted solely to endodontics. It aims to promote communication in the different fields that encompass endodontics for those dentists who have a special interest in endodontics.
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