An Oral and Maxillofacial Surgeon is a specialist in the field of dentistry that deals with the diagnosis and treatment of injuries, diseases and defects of the head and neck region. They complete four years of college, four years of dental school, and four to six years of a surgical residency before full consideration as a surgeon. The scope of oral and maxillofacial surgery is very broad and ranges from simple tooth extractions to very complex head and neck cancer reconstructions. Each surgeon limits his/her practice according to the ability based on the training received. The more common procedures performed by an oral surgeon on a day to day basis include the removal of teeth, dental implants, facial fractures, and biopsy of hard (bone) and soft tissue for pathological analysis.