ABSTRACT
Context: Topical corticosteroids are the treatment of choice for oral lichen planus (OLP) due to its potential anti‑inflammatory effect. However, chronic nature of OLP often requires long‑term and frequent applications, exposing patients to local and systemic side effects. Aim: To detect the systemic absorption of 0.1% triamcinolone acetonide (TAC) through the oral mucosa of patients with OLP. Subjects and Methods: This was a pilot pharmacokinetic study carried out in the Department of Oral Medicine and Radiology in collaboration with the Department of Toxicology, over 10 months. A total of twenty patients with OLP were included and advised to apply 0.1% TAC 3 times/day for 2 weeks and 2 times/day for next 2 weeks. Blood samples were obtained on the first and second visits and analyzed for triamcinolone using High pressure liquid chromatography (HPLC). Statistical Analysis Used: Paired t‑test was done to compare visual analog scale (VAS) score for burning sensation at the first and second visits, statistically significant if P < 0.05. The baseline demographic data were analyzed using descriptive statistics. Results: Paired t‑test was done to compare VAS score for burning sensation at the first and second visits, which turned to being statistically significant (P = 0.001). Although HPLC is an established method for the detection of TAC, none of the study populations showed evidence of steroid (TAC) in the blood sample during 4 weeks of treatment duration. Conclusions: 0.1% triamcinolone is a relatively safe drug to be used with no systemic absorption in the standard dose regimen for oral lichen palnus.