DOI:

10.37988/1811-153X_2026_2_60

Features of the diagnostic approach to the prevalence of the erosive-ulcerative form of oral lichen planus based on the criteria of a modified scheme-topogram with topographic coding

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Authors

  • I.N. Usmanova 1, Doctor of Science in Medicine, professor of the Therapeutic dentistry and Department
    ORCID: 0000-0002-1781-0291
  • I.A. Lakman 2, PhD in Engineering, assistant professor of the Biomedical engineering Department, head of the Scientific Lab for the study of socio-economic problems of regions
    ORCID: 0000-0001-9876-9202
  • O.A. Gurievskaya 3, 4, PhD in Medical Sciences, assistant professor of the Dentistry Department; dental therapist
    ORCID: 0000-0003-4580-9826
  • I.A. Galimova 1, PhD in Medical Sciences, assistant professor of the Therapeutic dentistry Department
    ORCID: 0000-0003-2692-2161
  • V.I. Kotov 5, senior lecturer of the Postgraduate education in dentistry Department
    ORCID: 0009-0005-6595-2189
  • B.M. Shcherbakov 6, assistant at the Dentistry Department
    ORCID: 0000-0001-8325-7394
  • M.V. Sofronov 6, PhD in Medical Sciences, associate professor and head of the Dentistry Department
    ORCID: 0009-0003-2934-2020
  • R.A. Khramov 7, 3rd year student of the Institute of Clinical Medicine
    ORCID: 0009-0003-0020-8661
  • Yu.L. Vasil’ev 7, 8, Doctor of Science in Medicine, professor of the Operative surgery and topographic anatomy Department; professor of the basic Department of engineering of cellular systems
    ORCID: 0000-0003-3541-6068
  • 1 Bashkir State Medical University, 450008, Ufa, Russia
  • 2 Ufa University of Science and Technology, 450076, Ufa, Russia
  • 3 Omsk State Medical University, 644099, Omsk, Russia
  • 4 Dental clinic “Elite”, 644012, Omsk, Russia
  • 5 Medical University “REAVIZ”, 443001, Samara, Russia
  • 6 Moscow Medical University “REAVIZ”, 117418, Moscow, Russia
  • 7 Sechenov University, 119048, Moscow, Russia
  • 8 MIREA — Russian Technological University, 119454, Moscow, Russia

Abstract

The use of clinical diagnostic criteria based on a scheme-topogram allows for a comprehensive clinical assessment of both the typical and the erosive-ulcerative forms of oral lichen planus (OLP). The goal of the study was to determine the role of a 61-zone topogram in objectifying the localization frequency of lesions characteristic of the typical and erosive-ulcerative forms of OLP.
Materials and methods.
The study analyzed data from a two-center trial involving 111 patients diagnosed with the typical and erosive-ulcerative form of the oral lichen planus. Multivariate analysis of variance (MANOVA), correlation analysis, and linear regression were used as statistical tests.
Results.
In the erosive-ulcerative form of LP, the buccal mucosa was most frequently affected (79% of cases), followed by the mucosa of the mouth corners (12%), and the dorsal and/or lateral surfaces of the tongue (10%). In the typical form, the buccal mucosa was involved in 72% of cases, and the dorsal tongue surface in 28% (p<0.05). Among 61 patients (55%) — 7 men and 54 women — erosive-ulcerative lesions predominated on the buccal mucosa and retromolar area (WHO topographic codes 19, 20, 55, 56), In 14 patients (12.6%) – 3 men and 11 women – lesions involved the dorsal and/or lateral surfaces of the tongue (p<0.05).
Conclusion.
Using a 61-topographic-code color-coded scheme-topogram of the oral mucosa and vermilion border of the lips is an important criterion for objectifying the localization of papular, erosive, ulcerative, and erythematous lesions; these lesions present with variable clinical symptoms, a tendency to recur, and potential for malignant transformation. The scheme serves as a foundation for developing personalized treatment recommendations and follow-up strategies for this patient group.

Key words:

lichen planus, oral mucosa, scheme-topogram, diagnosis, personalization

For Citation

[1]
Usmanova I.N., Lakman I.A., Gurievskaya O.A., Galimova I.A., Kotov V.I., Shcherbakov B.M., Sofronov M.V., Khramov R.A., Vasil’ev Yu.L. Features of the diagnostic approach to the prevalence of the erosive-ulcerative form of oral lichen planus based on the criteria of a modified scheme-topogram with topographic coding. Clinical Dentistry (Russia).  2026; 29 (2): 60—65. DOI: 10.37988/1811-153X_2026_2_60

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Received

March 5, 2026

Accepted

June 21, 2026

Published on

July 4, 2026