gumboil

gumboil [AS, goma, gum + byl] , an abscess of the gingiva and periosteum resulting from injury, infection, or dental decay. The gum is characteristically red, swollen, and tender. The abscess may rupture spontaneously, or it may require incision. Treatment may include antibiotics and hot mouthwashes. Also called parulis.

Gumboil (Neville, et al, 2015)