Sözen Emre, Akpınar Hasan
Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Afyonkarahisar Health Science University, Afyonkarahisar, Turkiye.
Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Afyonkarahisar Health Science University, Afyonkarahisar, Turkiye.
Acta Odontol Scand. 2025 May 13;84:241-249. doi: 10.2340/aos.v84.43600.
The aim of this study is to classify accessory mandibular canals (AMC) and investigate their association with the dimensions of the mandibular canal (MC) to enhance surgical planning and prevent complications in dental treatments.
Cone-beam computed tomography (CBCT) images were evaluated. AMC's frequency, length, and diameter, including dental, superior, inferior, forward-open, forward-closed, and retromolar types, were determined. Additionally, the dimensions of the MC, including its length and diameter, were measured, and the relationship between the AMC and MC was statistically analyzed. Descriptive statistics, chi-square test, independent samples t-test (for normally distributed data), Kruskal-Wallis test (for non-normally distributed data), and Tamhane post hoc test were used for statistical analysis of the data.
AMC was identified in 82 of the 222 hemimandibles examined (36.9%). It was found that the length and diameter of AMCs varied significantly depending on the AMC type (p = 0.000). The diameter of the dental type AMCs (mean 0.40 ± 0.22 mm) was considerably smaller than that of other AMC types (mean 0.86 ± 0.37 mm). The length and diameter of the MC were measured as 69.20 ± 5.10 mm and 2.96 ± 0.57 mm, respectively. While MC length was not found to influence the presence of AMC (p = 0.785), MC diameter was significantly associated with the occurrence of AMC (p = 0.000).
AMC, which is critical for improving surgical planning and reducing the risk of complications in dental procedures, is not uncommon. Their presence should be carefully evaluated, particularly in cases where the MC has a larger diameter.
本研究旨在对下颌副管（AMC）进行分类，并研究其与下颌管（MC）尺寸的关系，以优化手术规划并预防牙科治疗中的并发症。
对锥形束计算机断层扫描（CBCT）图像进行评估。确定AMC的频率、长度和直径，包括牙型、上型、下型、前开型、前闭型和磨牙后型。此外，测量MC的长度和直径，并对AMC与MC之间的关系进行统计分析。数据的统计分析采用描述性统计、卡方检验、独立样本t检验（用于正态分布数据）、Kruskal-Wallis检验（用于非正态分布数据）和Tamhane事后检验。
在222侧半下颌骨中，82侧（36.9%）发现有AMC。发现AMC的长度和直径因AMC类型而异（p = 0.000）。牙型AMC的直径（平均0.40±0.22 mm）明显小于其他AMC类型（平均0.86±0.37 mm）。MC的长度和直径分别测量为69.20±5.10 mm和2.96±0.57 mm。虽然未发现MC长度影响AMC的存在（p = 0.785），但MC直径与AMC的发生显著相关（p = 0.000）。
AMC对于改善手术规划和降低牙科手术并发症风险至关重要，并不罕见。应仔细评估其存在，尤其是在MC直径较大的情况下。
