Orthodontics is a specialty of that is concerned with the study and treatment of malocclusions (improper bites), which may be a result of tooth irregularity, dispro- portionate jaw relationships, or both.
The branch of dentistry concerned with the care and treatment of the tissues surrounding and supporting the teeth.
A department of dentistry involves diagnosis, prevention and treatment of dental pulp (where the nerves and blood vessels inside the tooth).
The branch of dentistry that deals with the care and treatment of children's teeth.