Clear aligners

Removable orthodontic treatment that gradually moves teeth into the desired position by sequentially changing computer-designed clear aligner trays.

Indication

• Mild to moderate crowding and spacing (diastema)
• Mild-to-moderate Angle Class I and selected Class II cases
• Correction of post-treatment relapse
• Suitable adult clinical cases where metal braces are not preferred for cosmetic reasons
• Need for gentle force in cases requiring periodontal caution
• Adult patients in whom maintaining oral hygiene is critical

Preparation

• Clinical examination, panoramic and cephalometric radiography
• Intraoral digital scanning or precision impression to create a virtual model
• Pre-treatment of active caries, calculus and gum disease
• Reviewing the treatment plan and number of aligners with the patient via digital simulation
• Placement of small clear attachments on the teeth if required

How it's performed

1. Each aligner is worn approximately 1-2 weeks for 20-22 hours per day
2. Removed during eating and brushing; aligners are changed in the order of the set
3. Interproximal reduction (IPR) of tooth surfaces may be performed if needed
4. Retentive attachments are bonded to teeth to deliver force as planned
5. Movement and fit are evaluated at periodic check-ups (every 4-8 weeks)
6. If needed, mid-treatment plan refinement is performed

Post-procedure

• Once treatment is complete, retainer use begins to maintain results
• Compliance with daily minimum wear time directly affects outcome
• Gum and caries examination every 6 months is recommended
• Reduced but continued retainer use is advised over the years
• Refinement aligners may be considered if relapse occurs

Risks

• Treatment failure or prolongation if wear time is insufficient
• Inability to reach the planned outcome in complex cases; metal brackets may be required
• Temporary increased salivation, mild speech changes (in the first days)
• Gum recession and minor root resorption (limited, comparable to fixed appliances)
• Caries formation under the aligner if oral hygiene is inadequate

FAQ

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