Orthodontic terms starting with O

Open bite – The front teeth do not meet when biting; a gap remains. Biting into food becomes difficult. Tongue thrusting Habits

Occlusion – The way the upper and lower jaw fit together when biting. Angle classes Jaw joint

Overbite – How far the upper front teeth overlap the lower ones vertically. Deep bite Overjet

Overjet – How far the upper front teeth stand horizontally in front of the lower ones. A large overjet increases the risk of injuring the front teeth. Distal bite Overbite