Evidence map›Paper›PMID 40325080›Full record

ArticleScientific reports2025

Comparison of clinical outcomes of polyetheretherketone and hybrid resin crowns placed on molars for over two years.

Miyuki Yokoi, Hitoshi Abekura, Kazuko Kagawa, Koji Morita, Fumiko Nishio, Hanako Umehara, Masamichi Kato, Ryoya Oda, Kazuya Doi, Kazuhiro Tsuga

Abstract readComparative Study
PubMed Full text at PMC Publisher
In one paragraph

Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. Article
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

10 authors.

Miyuki YokoiDepartment of Advanced Prosthodontics, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan.
Hitoshi AbekuraDepartment of Advanced Prosthodontics, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan. abekura@hiroshima-u.ac.jp.
Kazuko KagawaDepartment of Advanced Prosthodontics, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan.
Koji MoritaDepartment of Advanced Prosthodontics, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan.
Fumiko NishioDepartment of Fixed Prosthetic Dentistry, Field of Oral and Maxillofacial Rehabilitation, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan.
Hanako UmeharaDepartment of Advanced Prosthodontics, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan.
Masamichi KatoDepartment of Advanced Prosthodontics, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan.
Ryoya OdaGraduate School of Advanced Science and Engineering, Hiroshima University, Hiroshima, Japan.
Kazuya DoiDepartment of Advanced Prosthodontics, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan.
Kazuhiro TsugaDepartment of Advanced Prosthodontics, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This study aimed to compare the 2-year clinical outcomes of polyetheretherketone (PEEK) and hybrid resin crowns placed on molars. Patients who received PEEK (P-Cr) and hybrid resin (H-Cr) crowns at Hiroshima University Hospital between 2016 and 2021 were evaluated in 2024 for crown conditions, including loss, fractures, and occlusal wear. No cases of crown debonding or fracture were observed in the P-Cr group. In contrast, the H-Cr group had 10 cases of loss and 4 cases of fractures. The P-Cr group demonstrated significantly fewer cases of crown debonding than the H-Cr group. Occlusal wear was observed in most crowns in the P-Cr group. Compared to the hybrid resin crowns, the PEEK crowns had a lower risk of fracture and debonding and retained long-term functionality; however, surface roughness and color changes were observed, suggesting that they may not be ideal for patients with particularly high esthetic demands. Nevertheless, physiological occlusal relationships and functionality were preserved, indicating that PEEK crowns could be a viable option for restoring molar defects.

Indexed as

CrownsKetonesMolarPolyethylene GlycolsAdultAgedBenzophenonesFemaleHumansMaleMiddle AgedPolymersTreatment OutcomeBenzophenonesKetonespolyetheretherketonePolyethylene GlycolsPolymersClinical outcomesHybrid resin crownsPEEK crowns

Identifiers

PMID40325080
PMCPMC12052777

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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.