SynthesisBMC oral health2023
The global prevalence of oral leukoplakia: a systematic review and meta-analysis from 1996 to 2022.
Synthesis in BMC oral health, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers, 7 of them syntheses that pooled 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.
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
47 citing papers in PubMed, 7 syntheses or guidelines pooled it, 60 citations in OpenAlex.
- Cancer Hallmarks Expression in Oral Leukoplakia: Systematic Review and Meta-Analysis.Oral diseases · 2026Pooled it
- Oxidative stress and antioxidant markers in oral leukoplakia: a systematic review and meta-analysis.Frontiers in medicine · 2026Pooled it
- Malignant Transformation of Oral Leukoplakia and Proliferative Verrucous Leukoplakia and Its Biomarker Predictors: A Systematic Umbrella Review.Head & neck · 2026Pooled it
- Toluidine Blue and Chlorin-e6 Mediated Photodynamic Therapy in the Treatment of Oral Potentially Malignant Disorders: A Systematic Review.International journal of molecular sciences · 2025Pooled it
- Significance of Epidermal Growth Factor Receptor (EGFR) upregulation in the prediction of the malignant transformation risk in oral potentially malignant disorders: a systematic review and meta-analysis.Frontiers in oral health · 2025Pooled it
- Malignant transformation of oral leukoplakia: Systematic review and comprehensive meta-analysis.Oral diseases · 2025Pooled it
- Laser therapy decreases oral leukoplakia recurrence and boosts patient comfort: a network meta-analysis and systematic review.BMC oral health · 2024Pooled it
- Article
- Malignant Transformation Risk in Patients With Oral Leukoplakia and Type 2 Diabetes Mellitus.International dental journal · 2026Article
- Immunological Microenvironment Diversity in Homogeneous and Non-Homogeneous Oral Leukoplakia.International journal of molecular sciences · 2026Article
- Epithelial thickness as a new predictor of recurrence in oral leukoplakia after photodynamic therapy: a retrospective cohort study.BMC oral health · 2026Article
- Clinicopathological characteristics and follow-up outcomes of patients with oral potentially malignant disorders: A 7-year observational cohort study.Scientific reports · 2026Observational
- The Role of Chemopreventive Agents in the Management of Oral Potentially Malignant Disorders and Oral Cancer: A Narrative Review.Cancer reports (Hoboken, N.J.) · 2026Review
- Oral Glycogenic Acanthosis: A Clinicopathological Analysis of 13 Cases and Narrative Literature Review.Head and neck pathology · 2026Review
- Efficacy of 5-ALA Photodynamic Therapy in Dysplastic Oral Leukoplakia: Systematic Review and Meta-Analysis.Pharmaceutics · 2026Review
- Salivary Oxidative Stress and Antioxidant Markers in Oral Leukoplakia: A Systematic Review and Meta-Analysis.Antioxidants (Basel, Switzerland) · 2026Review
- A Retrospective Observational Study on Oral Leukoplakia Patients Adhering to the Mediterranean Diet From Southern Italy.International dental journal · 2026Observational
- Evaluating patients with oral leukoplakia in smokers versus non-smokers: A clinico-histopathological study.Bioinformation · 2026Article
- A comparative study of the effects of three modes of 4-Nitroquinoline N-oxide induction of Sprague Dawley rats in animal models of oral leukoplakia.Open life sciences · 2026Article
- Prospective applications of artificial intelligence for the diagnosis of oral leukoplakia: a scoping review.Frontiers in oral health · 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 at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundOral leukoplakia(OLK) is a common oral potentially malignant disorder. The global prevalence of solely OLK was published in 2003, while the prevalence varied among different studies. In recent years, large-scale summary and definition-related analyses obtain insufficient attention. This study aimed to perform a systematic review of prevalence studies of oral leukoplakia and assess predisposing factors of its occurrence.
methodsThe search terms ("Oral leukoplakia" OR OLK OR leukoplakia) AND (prevalence OR incidence OR epidemiology) were searched in databases (Pubmed, Embase, Scopus, and Web of Science) for OLK studies published from January 1996 until December 2022. The estimated prevalence calculation and risk of bias analysis used STATA 16.0.
resultsWe obtained 69 studies, including 1,263,028 participants, from 28 countries, and 6 continents. The prevalence was 1.39%, varying from 0.12 to 33.33%. The overall pooled estimated prevalence of OLK was 2.23% for population-based studies, 1.36% for clinic-based population studies, and 9.10% for specific populations. The pooled prevalence in different continents ranged from 0.33 to 11.74% with a statistical difference in the population-based calculation. The estimated prevalence of OLK was higher in males than in females. Those who smoked and consumed alcohol had a higher prevalence than those who did not.
conclusionCombining data from 69 published studies, the prevalence of OLK was determined as 1.39% and the pooling estimated global prevalence was 3.41%. The prevalence was relatively consistent and stable across different continents and different definitions. A higher pooled estimated prevalence was found among males, those aged over 60 years old, smokers, and alcohol consumers. The results from the included studies in this systematic review revealed that the prevalence was relatively consistent and stable across various definitions and continents, which may help in developing global treatment and prevention strategies for oral leukoplakia.
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Registered trials
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.