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This study compared the therapeutic efficacy of steroidal and non-steroidal agents for treating oral lichen planus.
Methods:
Forty patients with clinical and/or histologically proven oral lichen planus were randomly placed into four groups and treated with topical triamcinolone, oral dapsone, topical tacrolimus or topical retinoid for three months. Pre- and post-treatment symptoms and signs were scored for each patient.
Results:
Patients in all treatment groups showed significant clinical improvement after three months (p < 0.05), with steroidal and non-steroidal agents having equal efficacy. Furthermore, of the non-steroidal drugs, oral dapsone had greater efficacy than topical retinoid (p < 0.05). However, no significant differences in outcome were recorded for oral dapsone vs topical tacrolimus (p > 0.05) and for topical retinoid vs topical tacrolimus (p > 0.05).
Conclusion:
Non-steroidal drugs such as dapsone, tacrolimus and retinoid are as efficacious as steroidal drugs for treating oral lichen planus, and avoid the side effects associated with steroids.
Clinical, histopathological and ultrastmctural studies in three cases of rhinosporidiosis show complete remission of infection within one year of therapy with dapsone. Light and electron microscope studies confirmed arrest of the maturation of the spores and accentuated granulomatous response with fibrosis following dapsone therapy.
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