Restorative Dental Science Department, College of Dentistry, Jazan University, Jazan, Saudi Arabia.
College of Dentistry, King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia.
Biomed Res Int. 2022 Aug 2;2022:2400314. doi: 10.1155/2022/2400314. eCollection 2022.
This study aimed to conduct a compendious review of root canal morphology of "permanent mandibular teeth in different regions of Saudi Arabia" to obtain a large sample representing the total population. A detailed search through the databases Web of Science, Scopus, and PubMed was conducted following the PRISMA guidelines. The data were analyzed based on the following inclusion criteria: original full-length original articles that reported the variables of interest "(number of roots, number of canals, Vertucci's classification system and C-shaped canals or mid-mesial canals)" of the mandibular teeth and conducted on Saudi subjects. The retrieved data were presented as frequencies and percentages. The results revealed that 56.6% of mandibular central incisors had one canal and Vertucci type I (56.6%), while 57.4% of the mandibular lateral incisors had one canal, with Vertucci types I and III most frequent. In mandibular canines, 91.8% had one canal and 8.2% had two canals. Most of the mandibular first premolars had one root (86.6%), while almost all mandibular second premolars (91.5%) had one canal, and 96.9% had Vertucci type I configuration. Among the mandibular first molars, three and four canals were prevalent in 58.7% and 40.6%, respectively. The majority of mesial roots had Vertucci type IV (60.6%), and most of distal roots had Vertucci type I (72.2%). Most of the mandibular second molars had three canals (87.3%) and showed Vertucci type IV (39.4%) canals for mesial roots and Vertucci type I (95.6%) for distal roots. The C-shaped canals were seen in 8% of first premolars and 9.8% of second molars. The middle mesial canal was found in 4.2% and 0.4% of first and second molars, respectively. This review could represent "the population of Saudi Arabia as the included samples were combined from different regions of the country." Some variations were noticed within the same group of teeth from different regions. However, the overall results of combined samples were comparable to the other international studies.
本研究旨在对沙特阿拉伯不同地区“下颌恒牙根管形态”进行全面综述，以获得代表总人口的大量样本。按照 PRISMA 指南，通过 Web of Science、Scopus 和 PubMed 数据库进行了详细检索。根据以下纳入标准对数据进行分析：报告感兴趣变量（下颌牙齿的根数、根管数、Vertucci 分类系统和 C 形根管或中内根管）的原始全长原始文章，并对沙特受试者进行研究。检索到的数据以频率和百分比呈现。结果表明，56.6%的下颌中切牙有一个根管，Vertucci Ⅰ型（56.6%），而 57.4%的下颌侧切牙有一个根管，最常见的是 Vertucci Ⅰ型和Ⅲ型。下颌尖牙中，91.8%有一个根管，8.2%有两个根管。大多数下颌第一前磨牙有一个根（86.6%），几乎所有下颌第二前磨牙（91.5%）有一个根管，96.9%为 Vertucci Ⅰ型结构。下颌第一磨牙中，三根管和四根管分别占 58.7%和 40.6%。近中根的大多数为 Vertucci Ⅳ型（60.6%），远中根的大多数为 Vertucci Ⅰ型（72.2%）。大多数下颌第二磨牙有三个根管（87.3%），近中根有 Vertucci Ⅳ型（39.4%）根管，远中根有 Vertucci Ⅰ型（95.6%）根管。C 形根管见于 8%的第一前磨牙和 9.8%的第二磨牙。中内根管分别见于 4.2%和 0.4%的第一磨牙和第二磨牙。本综述可代表“沙特阿拉伯的人群，因为纳入的样本是从该国不同地区组合而成的。”同一组牙齿在不同地区之间存在一些差异。然而，组合样本的总体结果与其他国际研究相似。
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