Jaw, the bones and muscle tissue that make up the upper and lower parts of the mouth. The upper part is called the maxilla and the lower part is called the mandibleThe bone in the jaw is the maxilla. It is divided into the maxilla and mandible. An abnormal protrusion of the jawbone is called a bulging jaw. How is jaw bulge prevented and treated? Early diagnosis and early treatment are extremely important. Those who have misaligned teeth or jaw and facial deformities should wait for orthopedic treatment at a later date. Timely treatment of pericoronitis, periapical infection and other odontogenic infections has a positive significance in preventing the occurrence of osteomyelitis of the jaw. If osteomyelitis has been formed, it should be treated thoroughly in the acute stage to avoid turning into chronic. The systemic treatment of acute osteomyelitis of the jaws is the same as that of peri-mandibular cellulitis, which is mainly to strengthen the resistance of the body and control the infection with medication (methotrexate, spiramycin). Local treatment focuses on timely incision and drainage, and extraction of the source tooth. In chronic osteomyelitis of the jaws, efforts should be made to improve the physical condition of the patient, maintain smooth drainage, remove the source tooth in time, and thoroughly remove the lesion, scrape or remove the dead bone.