meaning of word fistula parulus
A parulis or fistula granuloma (gum boil), is a. common lesion that develops exclusively on the. gingiva (gum). It is characteristically found at the opening of the sinus. tract of a peri-apical or periodontal fistula. Infection from. the tooth / socket has tracted through the bone and opens. onto the gingiva. It can vary in size (dependent on the. amount of pus being produced and the state of the. personâs immune system).