Observational studyBMC oral health2025
The effect of periodontal status and coronal restoration quality on early and late term failures in root canal-treated teeth.
Observational study in BMC oral health, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
2 citing papers in PubMed.
- Three-Year Apical Outcomes in Teeth with Apical Periodontitis Following Primary Endodontic Treatment or Nonsurgical Retreatment: A Retrospective Clinical Study.Journal of clinical medicine · 2026Article
- From Caries to Periodontal Breakdown: A Biological and Clinical Continuum Linking Cariology, Operative Dentistry, Endodontics, and Periodontology.Dentistry journal · 2026Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundUnderstanding the underlying causes of root canal treatment (RCT) failures allows clinicians to more correctly predict treatment outcomes, paving the path for better results.
aimThis study aimed to evaluate the effect of coronal restoration and periodontal status in teeth with failed RCT. MATERIALS AND
methodsThe present observational study examined 538 patients to evaluate potential risk factors associated with RCT failure in accordance with the inclusion criteria. Potential failure factors recorded included clinical signs and symptoms, smoking habits, radiological findings, the type and quality of coronal restorations, and periodontal parameters such as the gingival index (GI), periodontal index (PI), periodontal probing depth (PD), and clinical attachment loss (CAL). Univariate and multivariate logistic regressions were used to relate patient and treatment variables with the presence of apical periodontitis (AP) and the timing of RCT. Each association was evaluated by calculating the odds ratio (OR) and its 95% confidence interval (CI). Significance was evaluated at the p < 0.05 level.
resultsThe effect of sex, smoking, CAL, age, RCT adequacy, coronal restoration quality, PI, GI, and PD, on RCT time was found to be statistically significant (p < 0.05). According to the multivariate analysis, being male (95% CI 1.061-2.210, OR 1.531, p = 0.023), smoking (95% CI 0.313-0.961, OR 0.548, p = 0.036), CAL (95% CI 1.0.384-0.890, OR 0.585, p = 0.012), and age (95% CI 0.955-0.978, OR 0.966, p = 0.001), were found to increase the risk of being under 5 years by 1.531, 0.548, 0.585, and 0.966 times, respectively. The effects of PI, GI, PD, CAL and age on the presence of AP were found to be statistically significant (p < 0.05). PI (OR: 2.032, 95% CI: 1.391-2.068, p = 0.001) and age (OR: 1.021, 95% CI: 1.004-1.038, p = 0.015) were found to significantly increase the risk of having AP.
conclusionThe findings of this study highlight the critical role of periodontal health in endodontic outcomes and underscore the potential benefits of educating patients about how smoking adversely affects the prognosis of RCT, which could enhance its long-term success.
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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 Socratic graph.