Periapical abscess is a common condition, which usually developed as a complication of the infection of the root of the tooth. The cases originated from periodontal disease have been reported. Facial injury may also cause tooth root infections. The clinical presentation is seen as a swelling or drainage tract near the involved root of the tooth. Diagnostic methods available for evaluating periapical abscess include physical examination, dental examination and X-ray. Most periapical abscess is treated with extraction of the involved tooth. In some cases, endodontic procedure may also be used. Prompt diagnosis and treatment are necessary to allow drainage and prevent recurrence of infection. An 11 months old, female Maltese dog with recurrent facial cellulitis below the left eye was referred for further investigation to the Veterinary Medical Center, Chungbuk National University. There were no visible dental problems, but left maxillary third and fourth premolars showed periapical bone lyses on extraoral radiographs. In this case, the dog was young and had no clinically significant dental problems like, gingivitis or periodontal pocket. It could be suspected that carnassial abscess might be secondary to cellulitis. Left maxillary third and fourth premolars were extracted by the closed extraction technique. Communication between some extraction sockets and the facial lesion was confirmed using periodontal explorer. The facial lesion was treated as open wound. During the follow-up of 3 weeks, the extraction site and the lesion reveal normal healing after procedure.