利用锥形束计算机断层扫描评估沙特亚种群下颌第二磨牙的根管和牙根形态的综合评价。
Comprehensive evaluation of root and root canal morphology of mandibular second molars in a Saudi subpopulation evaluated by cone-beam computed tomography.
机构信息
Department of Restorative Dental Science, Collage of Dentistry, University of Ha'il, Ha'il, Kingdom of Saudi Arabia.
Department of Dentistry, Prince Sultan Military Medical City, Riyadh, Saudi Arabia.
出版信息
BMC Oral Health. 2022 Jul 1;22(1):267. doi: 10.1186/s12903-022-02305-z.
BACKGROUND
The study's goal was to use Cone Beam Computed Tomography (CBCT) to assess the root and root canal anatomy of mandibular second molars with C-shaped root canal configurations in residents of the Hail district. The impact of gender and side on the frequency of root canal morphology was considered.
METHODS
The sample size for this study was 304 untreated mandibular second molars with completely developed roots on the right and left sides. Using CBCT on the teeth, the root form and canal morphology for each root are based on Vertucci's classification. The occurrence of canals in the shape of a C. The prevalence and resemblance of the left and right sides or men and females were investigated. The Chi-square test was performed to evaluate the findings.
RESULTS
Of the 304 mandibular second molars studied, 286 teeth had two roots (94.1%), whilst 13 (4.3%) were C-shaped root canal systems. 77 molars (25.3%) had two canal orifices, 219 (72.0%) had three canal orifices, and six (2.0%) and one (0.3%) had four and five root canal orifices, respectively. Type IV was the most common for mesial root, accounting for 57.7% of the sample (n = 176). For distal root, the most common occurrence was type I, which occurred 282 times (96.60%). The most prevalent root canal morphology was the presence of two canals in the mesial root and one canal in the distal root of teeth with two distinct roots (variant 3). (69.4%). The overall prevalence of C-shaped root canal systems is (4.3%) (n = 13).
CONCLUSIONS
The patient's race is an undeniable factor that influences root canal anatomy. The root canal morphology of mandibular second molars revealed significant differences between Saudi subpopulations. The majority of mandibular second molars had two roots and three root canals. When treating these molars, the presence of a C-shaped root canal system must be taken into account.
背景
本研究旨在使用锥形束 CT（CBCT）评估哈伊尔地区居民下颌第二磨牙具有 C 形根管形态的根管和根解剖结构。考虑了性别和侧面对根管形态频率的影响。
方法
本研究的样本量为 304 颗右侧和左侧完全发育的未治疗下颌第二磨牙。使用 CBCT 对牙齿进行检查，根据 Vertucci 分类确定每个根的根形态和根管形态。C 形根管的发生。调查了左侧和右侧或男性和女性的患病率和相似性。采用卡方检验评估发现。
结果
在研究的 304 颗下颌第二磨牙中，286 颗牙齿有两个根（94.1%），而 13 颗（4.3%）为 C 形根管系统。77 颗磨牙（25.3%）有两个根管口，219 颗（72.0%）有三个根管口，6 颗（2.0%）和 1 颗（0.3%）有四个和五个根管口。近中根最常见的类型为 IV 型，占样本的 57.7%（n=176）。对于远中根，最常见的类型为 I 型，发生 282 次（96.60%）。最常见的根管形态是两个根管位于近中根，一个根管位于两个明显根的远中根（变体 3）（69.4%）。具有两个明显根的下颌第二磨牙的总体 C 形根管系统患病率为（4.3%）（n=13）。
结论
患者的种族是影响根管解剖结构的不可否认的因素。沙特亚种群下颌第二磨牙的根管形态存在显著差异。大多数下颌第二磨牙有两个根和三个根管。在治疗这些磨牙时，必须考虑到 C 形根管系统的存在。
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