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PERIODONTICS Cite this article: Miricescu D, Totan A, Calenic B, Mocanu B, Greabu M . Salivary and serum cortisol in patients with periodontal disease and oral lichen planus. Stoma Edu J. 2015;2(1):51-56 SALIVARY AND SERUM CORTISOL IN PATIENTS WITH PERIODONTAL DISEASE AND ORAL LICHEN PLANUS Daniela Miricescu1a, Alexandra Totan1b, Bogdan Calenic1c, Brânduşa Mocanu2d, Maria Greabu1e* Department of Biochemistry, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania 2. Department of Periodontology, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy Bucharest, Romania 1. PhD, Teaching Assistant b. PhD, Lecturer c. PhD, Lecturer d. PhD, Teaching Assistant e. PhD, Professor, Head of Department a. Abstract Introduction: Periodontitis and oral lichen planus are two oral diseases that affect the adult population worldwide. Aim: A positive relationship had been proposed between psychological stress, periodontitis and oral lichen planus. The general aim of our study was to investigate the levels of “cortisol”, the stress- related hormone in patients with periodontal disease and oral lichen planus. Methodology: Our study included 20 patients with chronic periodontitis, 20 with oral lichen planus and 20 healthy subjects. We collected non-stimulated whole saliva and serum from patients and healthy subjects. Serum and salivary cortisol was measured using the ELISA method. Results: In both patients with chronic periodontitis and oral lichen planus, we obtained, in statistical terms, increased levels of salivary and serum cortisol versus the control group p<0.05. Discussions: Psychological stress may influence the evolution and progression of this two oral diseases. Cortisol can be regarded as the most useful biomarker to evaluate stress. Conclusions: Psychological stress may be regarded as risk factor for periodontal disease and oral lichen planus progression. Keywords: psychological stress, oral diseases, cortisol, biomarker Introduction Periodontitis, is a nonreversible inflammatory disease affecting the tooth supporting tissues. This chronic disease is caused by pathogenic microorganisms, three organisms in particular, Tanerella forsythensis, Porphyromonas gingivalis, and Treponema denticola, which have been directly associated with chronic periodontitis (1-3). Others factors can influence the appearance and evolution of this disease are oxidative stress and psychological stress (4-8). Received: May, 4 th 2015 Accepted: June, 1st 2015 Psychological stress m ^H