Oral Lichen Planus - Known and Unknown: a Review.
Level 5 - mechanism / opinion, no new human data
Narrative review with no systematic search criteria or quantitative synthesis
PubMed 31188760 · doi:10.2478/folmed-2018-0017
What was done
This narrative review summarizes literature regarding oral lichen planus (OLP), covering its proposed triggers (such as viruses, stress, and heat shock proteins), T-lymphocyte-mediated pathogenesis, diagnostic modalities (clinical, histopathological, and immunofluorescence), and current therapeutic approaches.
What was found
The abstract reports that lichen planus affects 1% to 2% of the general population, with highest prevalence in women over 40 years of age. Beyond these epidemiological figures, no empirical numerical results, trial sample sizes, or treatment effect sizes are reported. Current treatments (topical corticosteroids, retinoids, calcineurin inhibitors) are noted to often have insufficient outcomes.
Why it matters
The paper outlines current clinical understanding of oral lichen planus, underscoring the limited efficacy of standard therapies and the ongoing debate surrounding its potential for malignant transformation.
Limits
The abstract describes an unsystematic narrative overview rather than a systematic review. It provides no primary experimental data, study selection criteria, risk-of-bias assessments, or quantitative outcome measures.
Cited by
- contradicts Oral lichen planus is caused by a pathogenic microbe, fungus, or bacteria growing in the mouth.