Wisdom tooth pericoronitis will stink, periodontitis attack part of the erupted wisdom tooth crown and far in the gum to form periodontal pockets, food residues and soft scale long-term retention in the pocket, and under the action of bacteria produce corrosive necrotic odor, resulting in surrounding gum tissue redness, swelling, pain, brushing and mouthwash and other ways can not be completely removed, thus affecting communication. When the patient’s body resistance decreases bacterial virulence increases, the periodontal pockets begin to secrete inflammatory substances, making bad breath more intense, you can use 3% hydrogen peroxide solution to rinse and decompose the residue and bacteria retained in the pockets, apply iodine glycerin, etc. to promote anti-inflammation, and take oral cephalosporin and nitroimidazole antibiotics if necessary.