Prevalence and morphology of different root canal systems in mandibular premolars: a cross-sectional observational study

IF 1.9 4区医学 Q2 DENTISTRY, ORAL SURGERY & MEDICINE

Australian dental journal Pub Date : 2023-11-16 DOI:10.1111/adj.12994

O Rae, P Parashos

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引用次数: 0

Abstract

Background

This study investigated the prevalence and morphology of C-shaped and non-C-shaped root canal systems in permanent mandibular first (PM1) and second (PM2) premolars using retrospective analysis of cone-beam computed tomography (CBCT) scans, and panoramic radiographs.

Methods

CBCT scans from 2000 patients were screened for the presence of premolars with C-shaped canals and then assessed at three axial levels to determine the canal classification. The teeth were also assessed for Vertucci configuration, number of roots, and radicular grooves. Pre-existing panoramic radiographs were evaluated to identify features specific to PM1/2 with multiple canals or C-shaped anatomy.

Results

A total of 1576 PM1 and 1424 PM2 from 880 patients were evaluated. The overall prevalence of C-shaped canals was 2.2% (3.3% PM1, 1.0% PM2), with 49 (5.6%) patients presenting with at least one C-shaped mandibular premolar. There were 2.3 ± 0.6 and 2.4 ± 0.5 different classifiable cross-sections per tooth for PM1 and PM2, respectively. The sudden disappearance or bifurcation of a canal on panoramic radiographs was associated with the presence of multiple canals (P < 0.001) or C-shaped anatomy (P = 0.03).

Conclusions

Abstract Image

查看原文本刊更多论文

下颌前磨牙不同根管系统的流行和形态:一项横断面观察研究。

背景:本研究通过锥形束计算机断层扫描(CBCT)和全景x线片的回顾性分析，研究了永久性下颌第一(PM1)和第二(PM2)前磨牙c形和非c形根管系统的患病率和形态。方法:从2000例患者的CBCT扫描中筛选c形管的存在，然后在三个轴向水平进行评估，以确定管的分类。还评估了牙的Vertucci结构，根的数量和根槽。评估预先存在的全景x线片以确定pm2 /2多管或c形解剖的特异性特征。结果:880例患者共检测PM1 1576、PM2 1424。c形管的总体患病率为2.2% (3.3% PM1, 1.0% PM2)，其中49例(5.6%)患者至少有一颗c形下颌前磨牙。PM1和PM2每牙分别有2.3±0.6和2.4±0.5个不同的可分类截面。全景x线片上根管突然消失或分叉与存在多个根管有关(P结论:c型前磨牙内部和之间的横切面解剖结构存在很大差异，这将影响根管治疗计划。©2023澳大利亚牙科协会。

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来源期刊

Australian dental journal 医学-牙科与口腔外科

CiteScore

4.20

自引率

4.80%

发文量

审稿时长

6-12 weeks

期刊介绍： The Australian Dental Journal provides a forum for the exchange of information about new and significant research in dentistry, promoting the discipline of dentistry in Australia and throughout the world. It comprises peer-reviewed research articles as its core material, supplemented by reviews, theoretical articles, special features and commentaries.