Oral and maxillofacial surgery (OMFS or OMS) specializes in surgery of the face, mouth, and jaws. It is an internationally recognized surgical specialty. Oral Surgery is a separate recognized speciality confined to surgery within the mouth. OMFS is a specialty of dentistry in North America, Central America, South America, Australia, New Zealand, Asia, and Scandinavia (Sweden, Finland, Denmark, and Norway). After a full degree in dentistry, the dental specialty residency training of oral and maxillofacial surgery may or may not include a degree in medicine. In countries such as the UK and most of Europe, it is recognized as a specialty of medicine and a degree in medicine or both degrees in dentistry and medicine are compulsory.