Orthodontics is a field that focuses on aligning a patient’s teeth and jaw. Dentists may use corrective appliances like braces to address overbites, underbites and teeth gaps. Orthodontists might also treat neuromuscular and skeletal abnormalities of orofacial structures. Oral surgeons specialize in operations related to the teeth, gums, jaw and sinuses. This field requires collaboration with anesthetists and the treatment of severe infections. Specializing in oral surgery may require additional training and certification.