Jonker Casper Hendrik, Foschi Federico, L'Abbé Ericka Noelle, Oettlé Anna Catherina
Faculty of Health, Peninsula Dental School, University of Plymouth Ground, Plymouth PL6 8BT, UK.
Truro Dental Education Facility, Knowledge Spa, Royal Cornwall Hospital, Truro TR1 3HD, UK.
J Clin Med. 2025 Mar 27;14(7):2301. doi: 10.3390/jcm14072301.
: This study evaluates the root canal anatomy (main and accessory canals) of mandibular first molars in Black South Africans using micro-computed tomography. The effect of sex, arch side, and age are also investigated. : The number of root canals in each tooth and individual roots (including an observation of the middle-mesial and middle-distal canals), the number of accessory canals, accessory canal type, root canal thirds, and the prevalence of apical deltas were recorded. A chi-squared test of association ( < 0.05) was used to report on variables (sex, arch sides, and age). : In most teeth, either three (55.81%) or four canalled (24.42%) configurations were present. The middle-mesial canal was found in 18.6% of teeth (males and females), with a higher prevalence among females (23.68%). The middle-distal canal was found in 3.49% of teeth. Chamber canals were identified in 4.7% of teeth. Accessory canals most likely located in the apical third were found in approximately 84.9% and 86.1% of mesial roots and distal roots, respectively. Apical deltas were identified in 15.12% of mesial and 20.93% of distal roots. : Root canal anatomy in this population is diverse and includes differences in arch sides between the sexes.
本研究使用微型计算机断层扫描评估南非黑人下颌第一磨牙的根管解剖结构（主根管和副根管）。同时还研究了性别、牙弓侧别和年龄的影响。记录每颗牙齿和各个牙根的根管数量（包括观察近中中根管和远中中根管）、副根管数量、副根管类型、根管三段以及根尖分歧的发生率。采用卡方关联检验（<0.05）报告变量（性别、牙弓侧别和年龄）。在大多数牙齿中，存在三种根管形态（55.81%）或四种根管形态（24.42%）。在18.6%的牙齿中发现了近中中根管（男性和女性），女性中的发生率更高（23.68%）。在3.49%的牙齿中发现了远中中根管。在4.7%的牙齿中发现了髓室根管。分别在约84.9%的近中根和86.1%的远中根中发现最可能位于根尖三分之一处的副根管。在15.12%的近中根和20.93%的远中根中发现了根尖分歧。该人群的根管解剖结构多样，包括不同性别牙弓侧别的差异。
