Occlusion - relationship of the upper and lower teeth upon closure
Onlay - laboratory processed porcelain or metal restoration covering one or more cusps of a tooth
Onlay graft - Autogenous or Bone replacement graft placed on existing bone to increase the width or height of bone
Oral and maxillofacial surgeon - a dental specialist with special training in surgery of the mouth and jaw. Diagnoses & surgical treats 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 - The practice of keeping the mouth, teeth, and gums clean and healthy to prevent disease, as by regular brushing and flossing and visits to a dentist.
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
Oral Pathology - A branch of dentistry that is concerned with the diseases of the teeth, oral cavity, and jaws, and with the oral manifestations of systemic diseases. Oral pathology is the specialty of dentistry which deals with the nature, identification, and management of diseases affecting the oral and maxillofacial regions. It is a science that investigates the causes, processes and effects of these diseases.
O-ring - Doughnut shaped over denture attachment that possess the ability to bend and return to its approximate original shape
Orthodontics - dental specialty that treats mal -alignment of teeth and jaws
Osseous – bone
Osteonecrosis - Death or necrosis of bone
Osteoradionecrosis - Bone necrosis caused by excessive exposure to radiation
Overbite - vertical overlap of the front teeth
Overdenture - denture that fits over residual roots or dental implants and provides added retention to the denture
Overjet – horizontal overlap of the front teeth
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