Copy of `AAO - Orthodontic terms`

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AAO - Orthodontic terms
Category: Health and Medicine > Orthodontry
Date & country: 04/10/2013, American Association of Orthondists - Orthodontics terms
Words: 40

Upper or lower jaw.

The metal wire that is attached to the brackets and used to move the teeth.

The metal ring that is cemented to a tooth for strength and anchorage.

Brushing the teeth is part of an individual's daily home dental care. Patients with braces should follow the orthodontist's instruction on how often to brush.

The cheek side of the back teeth in both arches or jaws.

Cephalometric Radiograph
A lateral (side view) x-ray of the head.

A stretchable series of elastic o-rings connected together and placed around each bracket to hold the archwire in place and move the teeth.

Class II Malocclusion
A malocclusion with the upper front teeth protruding or due to the lower teeth and/or jaw positioned back relative to the upper teeth and/or jaw.

Class III Malocclusion
A malocclusion with the lower front teeth protruding or due to the lower teeth and/or jaw positioned ahead relative to the upper teeth and/or jaw.

Comprehensive Treatment
Complete orthodontic treatment performed to correct a malocclusion.

Congenitally Missing Teeth
A genetic occurrence in which the expected number of permanent teeth do not develop.

Upper posterior (back) teeth are in crossbite if they erupt and function inside or outside of the arch in the lower posterior teeth. Lower anterior (front) teeth are I crossbite if they erupt and function in front of the upper anterior teeth. A crossbite can be individual teeth or groups of teeth.

Ectopic Eruption
Term used to describe a tooth or teeth that erupt in an abnormal position.

The process by which teeth enter into the mouth.

The removal of a tooth.

Fixed Appliances
An orthodontic appliance that is bonded or cemented to the teeth and cannot be or should not be removed by the patient.

Gummy Smile
Showing an excessive amount of gingival (gum) tissue above the front teeth when smiling.

An appliance worn outside of the mouth to provide traction for growth modification and tooth movement.

A tooth that does not erupt into the mouth or only erupts partially is considered impacted.

Interceptive Treatment
Orthodontic treatment performed to intercept a developing problem. Usually performed on younger patients that have a mixture of primary (baby) teeth and permanent teeth.

The surface of the teeth in both arches that faces the lips.

The tongue side of the teeth in both arches.

Lower jaw.

Upper jaw.

Mixed Dentition
The dental developmental stage in children (approximately ages 6-12) when they have a mix of primary (baby) and permanent teeth.

A removable device used to protect the teeth and mouth from injury caused by sporting activities. The use of a mouthguard is especially important for orthodontic patients.

A removable appliance worn at night to help an individual minimize the damage or wear while clenching or grinding teeth during sleep.

Orthopedic Appliance
A removable functional appliance designed to guide the growth of the jaws and face.

Palatal Expander
A fixed or removable device used to make the upper jaw wider.

Panoramic Radiograph
An x-ray that shows all the teeth and both jaws on one film.


Preventive Treatment
Orthodontic treatment to prevent or reduce the severity of a developing malocclusion (bad bite).

A fixed or removable appliance worn after the braces are removed. A removable retainer attaches to your upper and/or lower teeth and holds them in their finished positions.

Safety Strap
The safety strap prevents the facebow of the headgear from coming loose and causing injury.

An elastic o-ring or small wire loop placed between the teeth to create space for placement of bands. Separators are usually placed between the teeth a week before bands are scheduled to be cemented to the teeth.

Serial Extraction
Selective or guided removal of certain primary (baby) teeth and/or permanent teeth over a period of time to create room for permanent teeth.

Supernumerary Teeth
A genetic occurrence in which there are more teeth than the usual number. These teeth can be malformed or erupt in abnormally.

Tongue Crib
A fixed appliance used to help a patient stop habits or undesirable tongue forces exerted on the teeth and bone that supports the teeth.

Tongue Thrust
An individual's tongue pushes against the teeth when swallowing. Forces generated by the tongue can move the teeth and bone and may lead to an anterior or posterior open bite.

Wax is placed on the brackets or archwires to prevent them from irritating the lips or cheeks.