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.
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