Double-blind, crossover, placebo-controlled clinical trial with clobetasol propionate in desquamative gingivitis - Motta, Ana Carolina Fragoso; Domaneschi, Carina; Komesu, Marilena Chinali; Souza, Cacilda da Silva; Aoki, Valéria; Migliari, Dante Antônio (Brazilian dental journal, 2009)