.
Oral and maxillofacial surgery is a branch that involves a number of surgical procedures, which include
Removal of wisdom tooth
Treatment of temporomandibular joint disorders
Bone grafting
Treatment of facial trauma
Treatment of oral pathological lesions
Dental implants

Temporomandibular Joint Disorders.
These are a group of problems related to complex jaw joint. The symptoms associated with the disorder may include any of the following.
Pain and clicking sound on opening or closing the mouth.
Pain or difficulty in opening mouth, eating or yawning.
Teeth do not touch on biting.
Hard to use front teeth while tearing or biting.
Repeatedly grinding or clenching the teeth.
These problems may result due to stress, temporomandibular joint injury, arthritis, infection, tightening of jaw muscles or repeated clenching or grinding of teeth.

Treatment.
Most of these problems can be treated in initial stages. For problems related to grinding, a splint or a nightguard can be given. It helps in relaxation of muscles and also reduces pain.

Facial Trauma.
Facial trauma includes any one of the following injuries
Facial lacerations (cuts). Removal of tooth from socket.
Fracture of facial bones.
Fracture of jaws.
Cuts or bruises inside the mouth

Oral Pathology.
A special type of mucosa is present inside the mouth which is smooth and coral pink. Any alteration in the normal structure indicates pathology.
Any of the following symptoms if present need treatment
A reddish/ whitish patch. A sore that does not heal.
Difficulty in chewing/swallowing food.
A lump or thickening on skin living inside the mouth.
Reduced mouth opening.