Dentistry is the art and science of prevention, diagnosis, and treatment of conditions, diseases, and disorders of the oral cavity, the maxillofacial region, and its associated structures as it relates to human beings. A dentist is a doctor qualified to practice dentistry. In most countries, several years of training in a university (usually 4-8) and some practical experience working with actual patients' dentition are required to become a qualified dentist. The patron saint of dentists is Saint Apollonia, martyred in Alexandria by having all her teeth violently extracted.

Physical therapy (also known as physiotherapy) is an allied health profession concerned with the assessment, diagnosis, and treatment of disease and disability through physical means. It is based upon principles of medical science, and is generally held to be within the sphere of conventional (rather than alternative) medicine. Physiotherapy is practiced by physiotherapists (also known as physical therapists, e.g. in the United States), though aspects may also be practiced under supervised delegation by physiotherapy assistants or other health professionals.

In American and Canadian English, a veterinarian (from Latin veterinae, "draught animals") is an animal doctor, a practitioner of veterinary medicine. The equivalent term in British English is veterinary surgeon, and both terms are often shortened to vet.

A Veterinary Surgeon is a veterinarian qualified in the UK and some other English-speaking countries (See: Commonwealth of Nations and Commonwealth realms). In the UK, veterinary surgeons are regulated by the Royal College of Veterinary Surgeons or RCVS. The legislation affecting the activity of UK veterinary surgeons and of the RCVS is the Veterinary Surgeons Act 1966.