Sialolithiasis of minor salivary gland in labial mucosa: clinical finding - Martins, Helder Domiciano Dantas; Yanaguizawa, Wellington Hideaki; Gurgel, Bruno Cesar de Vasconcelos; Martins, Marília Trierveiler; Gallo, Camila de Barros (RFO Universidade de Passo Fundo, 2020)