E.S. LEONTYEVA¹, L.T. BAYAZITOVA², S.A. LISOVSKAYA², L.I. MIKHEEVA³, L.R. MUKHAMEDZHANOVA⁴, R.G. KUZNETSOVA⁵

¹Kazan State Medical University, 49 Butlerova St., Kazan, Russian Federation 420012

²Kazan Scientific-Research Institute for Epidemiology and Microbiology of Rospotrebnadzor, 67 Bolshaya Krasnaya St., Kazan, Russian Federation 420015

³Levoberezhnaya City Policlinic, 22 Pozharsky St., Khimki, Moscow region, Russian Federation 141406

⁴Ulyanov Chuvash State University named, 15 Moskovskiy Prospekt, Cheboksary, Russian Federation 428015

⁵Republican Clinical Hospital of Ministry of Health of the Republic of Tatarstan, 138 Orenburgskiy Trakt, Kazan, Russian Federation 420064

Leontyeva E.S. — postgraduate student of the Department of Therapeutic Stomatology, tel.: +7-905-375-02-55, e-mail: cathie_leo@mail.ru¹ 

Bayazitova L.T. — PhD (Medicine), Head of Microbiology Department, tel. +7-987-234-19-45, e-mail: bajalt@mail.ru² 

Lisovskaya S.A. — PhD (Medicine), Head of Mycology Department, tel. +7-917-299-28-92, e-mail: lysovskaya@mail.ru² 

Mikheyeva L.I. — dentist, tel. (495) 233-34-55-68 e-mail: lmdent@ya.ru³ 

Mukhamedzhanova L.R. — D. Med. Sc., Professor of the Department of Propaedeutics of Stomatologic Diseases and New Technologies, tel. +7-965-597-11-64, e-mail: lr71@bk.ru⁴

Kuznetsova R.G. — Senior Researcher of Scientific-Research Department, tel. (843) 237-34-47, e-mail: rokuz@mail.ru⁵ 

The study presents the results of microbial contamination of erosive and ulcerative lesions of the oral lichen planus. The density of the bacterial, periodontal-pathogenic аnd Candida contamination in patients with associated periodontal foci of infection has been shown to increase. The dependence between the high degree of microbial contamination of the epithelial defects of varying depth and current activity of inflammatory and destructive processes in periodontal tissues has been identified.

Key words: lichen planus, periodontal focus of infection, bacterial, periodontal-pathogenic, Candida microflora

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