Definitions of Orthodontic Terms

Here are definitions of some of the most common orthodontic terms.

Impressions: A mold of your teeth which is used to make a model of
them

Panoramic x-ray: An x-ray made by a machine that rotates
around your head to give a full picture of your teeth and jaws

Closed bite: Where the upper teeth cover the lower teeth on biting
down

Crossbite: Where some upper teeth are inside the lower teeth on
biting down

Crowding: Too many teeth in too small a space

Fixed Appliance: Cemented or bonded to the teeth

Lingual Appliances: Fixed to the inside of the teeth

Malocclusion: Poor positioning of your teeth

Class I: Bite is fine as top teeth line up with bottom teeth
but teeth are crooked or crowded

Class II: Upper teeth stick out past lower teeth (also called
an "overbite")

Class III: Lower teeth stick out past upper teeth (also called
an "underbite")

Occlusion: The alignment and spacing of upper and lower teeth on
biting down

Open Bite: Teeth do not close or come together in the front of
your mouth

Proper Occlusion: All teeth are straight and top teeth line up
with bottom teeth

Wax Bite: Bitemark left on wax to measure how well teeth are
aligned