Evidence map›Paper›PMID 42688576›Full record

ReviewJournal of dental sciences2026

Presence of a distolingual root in mandibular first molars as an indicator of association with other tooth canal anatomies: A systematic review.

Yu-Chiao Wu, Chia-Yun Huang, Ho-Sheng Chiang, Wei-Cheng Lee, Ying-Wu Chen, Ling-Yu Kung, Kuei-Yuan Chen, Ren-Yeong Huang, Yi-Shing Shieh

Abstract readReview
PubMed Full text at PMC Publisher
In one paragraph

Review in Journal of dental sciences, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Yu-Chiao WuDepartment of Operative Dentistry and Endodontics, College of Oral Medicine, Tri-Service General Hospital and National Defense Medical University, Taipei, Taiwan.
Chia-Yun HuangDepartment of Operative Dentistry and Endodontics, College of Oral Medicine, Tri-Service General Hospital and National Defense Medical University, Taipei, Taiwan.
Ho-Sheng ChiangDepartment of Operative Dentistry and Endodontics, College of Oral Medicine, Tri-Service General Hospital and National Defense Medical University, Taipei, Taiwan.
Wei-Cheng LeeDepartment of Orthodontics and Dentofacial Orthopedics, College of Oral Medicine, Tri-Service General Hospital and National Defense Medical University, Taipei, Taiwan.
Ying-Wu ChenDepartment of Periodontology, College of Oral Medicine, Tri-Service General Hospital and National Defense Medical University, Taipei, Taiwan.
Ling-Yu KungDepartment of Family Dentistry and Oral Diagnosis, College of Oral Medicine, Tri-Service General Hospital and National Defense Medical University, Taipei, Taiwan.
Kuei-Yuan ChenDepartment of Oral and Maxillofacial Surgery, College of Oral Medicine, Tri-Service General Hospital and National Defense Medical University, Taipei, Taiwan.
Ren-Yeong HuangDepartment of Periodontology, College of Oral Medicine, Tri-Service General Hospital and National Defense Medical University, Taipei, Taiwan.
Yi-Shing ShiehDepartment of Operative Dentistry and Endodontics, College of Oral Medicine, Tri-Service General Hospital and National Defense Medical University, Taipei, Taiwan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Understanding anatomical variations in root canal morphology is crucial for achieving successful endodontic outcomes. The presence of a distolingual root (DLR) in mandibular first molars (MFMs) has been proposed as an indicator of complex root canal anatomy in other teeth. This systematic review aimed to evaluate the association between DLRs in MFMs and root canal configurations in other teeth across different ethnic populations. Following PRISMA guidelines, a comprehensive search of PubMed, MEDLINE Complete, Scopus, ClinicalKey, and relevant registries was performed up to October 10, 2025, using the keywords "distolingual root" and "radix entomolaris." Inclusion criteria comprised

Indexed as

CBCTComplex canalsDistolingual rootMandibular first molar

Identifiers

PMID42688576
PMCPMC13535948

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.