SynthesisBMC oral health2024
Systematic review and meta-analysis of root morphology and canal configuration of permanent premolars using cone-beam computed tomography.
Synthesis in BMC oral health, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
8 citing papers in PubMed.
- Effect of Apical Third Enlargement to Different Preparation Sizes and Tapers on Postoperative Pain and Intra-canal Bacterial Reduction: A Randomized Clinical Trial.Journal of clinical and experimental dentistry · 2026Review
- Association between tooth agenesis and root morphology assessed by periapical radiographs : Retrospective cross-sectional observational study.Journal of orofacial orthopedics = Fortschritte der Kieferorthopadie : Organ/official journal Deutsche Gesellschaft fur Kieferorthopadie · 2026Article
- Cone-beam computed tomography analysis of maxillary premolar canal anatomy: Ahmed's versus Vertucci's classifications in a Jordanian cohort.Restorative dentistry & endodontics · 2026Article
- Assessing root canal configuration of permanent mandibular incisors in Indian subjects using CBCT.Bioinformation · 2026Article
- A comparison of methods for assessing root canal curvature using periapical radiographs: an intrarater/interrater reliability and agreement study.BMC oral health · 2025Article
- Micro-computed tomography analysis and ex-vivo detection of six root canals in a four-rooted mandibular first premolar.BMC oral health · 2025Article
- Unusual Canal Morphology in Mandibular Premolars With Two Distal and One Mesial Canal: A Case Series.Cureus · 2024Article
- Prevalence ofHeliyon · 2024Article
Corrections and comments
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Authors and funding
5 authors.
Funding
Abstract
introductionThe efficacy of root canal treatment is greatly impacted by a thorough understanding of root canal anatomy. This systematic review and meta-analysis aim to thoroughly investigate the root morphology and canal configuration (RMCC) of permanent premolars (PMs). METHODOLOGY: A comprehensive analysis was conducted following the PRISMA guidelines. Literature exploration was carried out across four electronic databases (PubMed, Embase, Cochrane, and Web of Science). The risk of bias assessment was conducted for the included studies utilizing the Anatomical Quality Assessment (AQUA) tool. Data analysis was performed utilizing SPSS and RevMAN5.3.3. The meta-analysis was applied with a 95% confidence interval to calculate odds ratios (OR).
resultsAmong the 82 selected studies, 59 studies exhibited potential bias in domain one (objective(s) and subject characteristics), followed by domain three (methodology characterization). The majority of maxillary PM1s had either single root (46.7%) or double roots (51.9%), while three-rooted variants were uncommon (1.4%). Conversely, most other PMs exhibited a single root. In terms of canal configuration, maxillary PM1s predominantly featured double distinct canals (87.2%), with the majority of maxillary PM2s displaying either a single canal (51.4%) or double canals (48.3%). Mandibular PMs were primarily characterized by single canals, accounting for 78.3% of mandibular PM1s and 90.3% of mandibular PM2s. Subgroup analyses revealed higher incidences of single-rooted and single-canalled PMs among Asians compared to Caucasians. Additionally, women exhibited a higher incidence of single-rooted PMs, while men showed a greater frequency of double-rooted PMs.
conclusionsThe comprehensive analysis indicated that maxillary PM1s predominantly possess double roots and double canals, whereas maxillary PM2s and mandibular PMs were primarily characterized by single-rooted with a single canal. Notably, single root and single canal were more prevalent among women and Asian samples.
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