Lorem
La Hulpe 02 653 21 01Nivelles 067 84 19 00La Hulpe 02 653 21 01Nivelles 067 84 19 00
Orthodontic Glossary for Patients

Orthodontic Glossary

Key terms to understand your treatment and regain your smile.

A

Aligners (Trays)
See the definition of Orthodontic trays. This term specifically refers to trays used for active treatment to move teeth.
Orthodontic anchorage (Mini-screws)
Small titanium screw temporarily inserted into the jawbone. It serves as a fixed and stable anchorage point to guide tooth movement with very high precision, especially in complex cases.
Dental braces
General term referring to any fixed or removable device used to correct the position of teeth and jaws.
Functional appliances
Devices (often removable) used in growing children and adolescents to stimulate or slow the growth of one jaw and correct jaw discrepancies.
Orthodontic archwire
Metal wire (often with shape memory) connecting the brackets. It is the “engine” of the treatment, applying light continuous force to guide teeth into their ideal position.
TMJ (Temporomandibular Joint)
The joint that connects the lower jaw to the skull, located just in front of the ears. Bite problems can sometimes affect its proper function.

B

Brackets
Common term for the attachments bonded to each tooth. They can be metal or ceramic (more discreet) and support the orthodontic wire.
Open bite
Condition where upper and lower teeth do not touch when the mouth is closed. It can cause difficulties in eating or speaking.
Detached bracket
Occurs when a bracket comes loose from the tooth. This is not an emergency, but you should contact the office quickly to rebond it and avoid slowing treatment.

C

Cephalometric X-ray
Side-view skull X-ray essential for orthodontists. It helps analyze jaw position in relation to the skull and plan the most suitable treatment.
Orthodontic wax
Small transparent wax bead applied to a bracket or wire that irritates the cheek or tongue. It is a very effective temporary solution for discomfort.
Angle’s classification (Class I, II, III)
System describing jaw relationships. Class I: ideal. Class II: lower jaw retruded. Class III: lower jaw protruded.
ClearCorrect
A solid alternative to Invisalign, supported by the major dental group Straumann. These clear aligners are widely used and valued for their flexibility.
Initial consultation
The first essential appointment where the orthodontist performs a full exam, discusses your expectations, determines if treatment is needed, and explains possible options.
Retention
Essential phase after active treatment. A retainer (bonded wire or nighttime tray) keeps teeth in their new position and ensures long-term stability.

D

Decalcification
Chalky white spot on enamel caused by poor hygiene around brackets. It is an early sign of cavities and highlights the importance of thorough brushing.
Treatment plan and estimate
Detailed document presenting the proposed treatment plan, estimated duration, and total cost.
Diastema
Gap between two teeth, most often between the upper central incisors. Orthodontics can close these spaces for a more harmonious smile.
Palatal expander
Device fixed to the palate, mainly used in growing children to widen a narrow upper jaw and create space for permanent teeth.

E

Intermaxillary elastics
Small rubber bands worn by the patient between upper and lower teeth. They are essential to correct jaw discrepancies and ensure proper bite.
Digital impressions
Modern replacement for traditional impression paste. A scanner creates a precise 3D image of your teeth for greater comfort and accuracy.
Dental crowding
When teeth lack space on the arch and overlap or are poorly aligned. One of the most common reasons for orthodontic treatment.
Premolar extraction
In severe crowding cases, it may be necessary to remove premolars to allow perfect alignment and long-term stability.

G

Gingivitis
Inflammation of the gums that become red, swollen, and bleed easily. Common during treatment if hygiene is neglected but fully reversible.
Orthodontic trays
General term for removable clear appliances covering the teeth.
1. Treatment trays (Aligners): Series of progressive trays changed regularly to actively move teeth.
2. Retention trays: A single stronger tray worn after treatment to maintain final position.
Tongue or thumb crib
Small device placed behind front teeth to help children correct thumb sucking or improper tongue posture.

H

Oral hygiene
Braces make brushing more difficult. Special toothbrushes, interdental brushes, and floss are essential for healthy teeth and gums throughout treatment.

I

Invisalign®
The pioneer and best-known brand of clear aligner treatment. A discreet and comfortable way to straighten teeth.

M

Malocclusion
Technical term for an improper bite. There are many types of malocclusions that orthodontics aims to correct.

O

Crossbite
Malocclusion where upper teeth close inside lower teeth. If left untreated, it may cause premature wear and jaw asymmetry.
Orthodontics
Dental specialty dedicated to correcting tooth and jaw misalignments for both aesthetic and functional purposes.
Orthodontist
Dentist with several extra years of specialized training in orthodontics.

P

Panoramic X-ray
X-ray providing an overview of all teeth, jaws, and joints. Essential before starting treatment.
Prognathism and Retrognathism
Jaw position issues. Retrognathism: lower jaw set back. Prognathism: lower jaw protruded.

R

Adjustment appointment
Regular follow-up visits (every 4–8 weeks) where the orthodontist adjusts the appliance and checks progress.

S

Spark™ Clear Aligners
Direct competitor of Invisalign, known for high transparency and stain resistance (TruGEN™ material).
Stripping
Painless procedure that slightly polishes contact points between certain teeth to gain small amounts of space.
Deep bite
When upper teeth excessively overlap lower teeth. Severe cases may cause tooth wear and gum pain.
SureSmile® Clear Aligners
System developed by Dentsply Sirona featuring very advanced treatment-planning software.
This site is registered on wpml.org as a development site. Switch to a production site key to remove this banner.