Almehrzi Hanadi, Khawajah Summaya, Alharbi Nouf, Abed Rashid El, Jamal Mohamed
Hamdan Bin Mohammed College of Dental Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai Health Care City, Dubai, United Arab Emirates; Emirates Health Services, Dubai, United Arab Emirates.
Department of Dentistry Zayed Sports City, Healthpoint Hospital (Mubadala health), Abu Dhabi, United Arab Emirates.
Int Dent J. 2025 Jun;75(3):1864-1873. doi: 10.1016/j.identj.2025.02.001. Epub 2025 Feb 22.
Numerous studies have reported that maxillary and mandibular premolars have a complex internal canal configuration, which can vary according to the race and geographic origin. Therefore, a thorough knowledge and understanding of the root and canal morphology is crucial to ensure successful outcome of root canal treatment. This retrospective study aims to describe the root and canal morphology of the maxillary and mandibular first and second premolars in the Emirati subpopulation using cone-beam computed tomography (CBCT).
This retrospective study analyzed 360 CBCT scans that were randomly selected and met the inclusion and exclusion criteria. The scans were reviewed by two evaluators who recorded the number and shape of roots and categorized the canal morphology based on the Vertucci classification (VC). The data were analyzed statistically using SPSS software.
A total of 1795 premolars were examined. Most maxillary first premolars had one root (52.1%), while only 0.9% had three roots. Type I VC was the most common canal configuration (53.8%). The majority of maxillary second premolars had one root (91%). Type I VC was the most common canal configuration (47.4%), followed by type III (32.4%). Most of the mandibular first and second premolars had one root (77.3% and 97%, respectively), and Type I VC was the most common canal configuration (70.4% and 94.9%, respectively). C-shaped canals were most observed in the mandibular first premolars, with a prevalence of 22.7%.
Our results showed great variations in the canal configuration. In addition, C-shaped canals in mandibular first premolar is relatively high (22.7%).
Premolars in Emirati population exhibit complex anatomy. Therefore, clinicians might consider advanced diagnostic and treatment techniques when treating premolars in this population.
众多研究报告称，上颌和下颌前磨牙具有复杂的根管形态，其会因种族和地理来源的不同而有所差异。因此，全面了解和掌握牙根及根管形态对于确保根管治疗的成功结果至关重要。本回顾性研究旨在使用锥形束计算机断层扫描（CBCT）描述阿联酋亚人群体中上颌和下颌第一及第二前磨牙的牙根和根管形态。
本回顾性研究分析了360例随机选取且符合纳入和排除标准的CBCT扫描图像。由两名评估者对扫描图像进行审查，记录牙根的数量和形态，并根据维尔图奇分类法（VC）对根管形态进行分类。使用SPSS软件对数据进行统计学分析。
共检查了1795颗前磨牙。大多数上颌第一前磨牙有一个牙根（52.1%），而只有0.9%有三个牙根。I型VC是最常见的根管形态（53.8%）。大多数上颌第二前磨牙有一个牙根（91%）。I型VC是最常见的根管形态（47.4%），其次是III型（32.4%）。大多数下颌第一和第二前磨牙有一个牙根（分别为77.3%和97%），I型VC是最常见的根管形态（分别为70.4%和94.9%）。C形根管在下颌第一前磨牙中最为常见，患病率为22.7%。
我们的结果显示根管形态存在很大差异。此外，下颌第一前磨牙中C形根管的发生率相对较高（22.7%）。
阿联酋人群中的前磨牙表现出复杂的解剖结构。因此，临床医生在治疗该人群的前磨牙时可能需要考虑采用先进的诊断和治疗技术。
