Occlusion Closure; relationship of the upper and lower teeth upon closure.
Onlay Laboratory produced restoration covering one or more cusps of a tooth.
Oral and Maxillofacial Surgeon A dental specialist who manages the diagnosis & surgical treatment of diseases, injuries, and deformities of the mouth and supporting structures. Requires four additional years of training after dental school.
Oral Cavity The mouth.
Oral Hygiene Process of maintaining cleanliness of the teeth and related structures.
Oral and Maxillofacial Surgery Surgical procedures on the mouth including extractions, removal of cysts or tumors, and repair of fractured jaws.
Oral Pathologist Dentist specializing in the study of oral diseases.
Orthodontics Dental specialty that treats misalignment of teeth.
Osseous Boney.
Overbite Vertical overlap of the front teeth.
Overdenture Denture that fits over residual roots or dental implants.
