Am I Suitable for Clear Aligners?

Yes, for mild to moderate crowding — typically up to 5–6mm. Aligners move teeth through sequential tipping and rotation, which handles mild crowding reliably. Severe crowding (over 8–10mm) may require extractions, and aligners are generally less predictable than fixed braces for managing extraction spaces. A clinical assessment with X-rays is needed to determine whether your level of crowding is within aligner range.

No. There is no upper age limit for clear aligners. Adults in their 40s, 50s, 60s, and beyond are frequently treated successfully with aligners, particularly for relapse after previous treatment or mild cosmetic issues. The key criteria are healthy gums and bone, healthy teeth, and the ability to comply with wear time. Gum disease must be stable and controlled before starting any orthodontic treatment.

Aligners must be worn 20–22 hours per day for most systems (Invisalign, Spark, ClearCorrect, and similar). They are removed only for eating, drinking anything except water, and cleaning. Wearing aligners fewer than 20 hours per day significantly slows treatment, increases the risk of not finishing with the planned number of aligners, and may mean additional refinement aligners are needed. Compliance is the biggest predictor of clear aligner outcomes.

Crowns can be fitted with aligner attachments, though bonding is less reliable than on natural enamel. Dental implants cannot be moved — the implant is fixed in bone. If an implant is in the wrong position, aligners cannot move it; the treatment plan must work around it. Bridges require careful assessment as they attach multiple teeth together. Always declare all restorations at your consultation — this significantly affects what aligners can achieve.

Invisalign has the most published clinical evidence and handles the widest range of case complexity — Invisalign Comprehensive is equivalent to full fixed brace treatment for most cases. Short-course systems (Invisalign Lite, SureSmile, smaller brands) are designed for milder cases only. Suitability depends on your specific clinical needs, not the brand name. A qualified clinician should match your case complexity to the appropriate aligner system — not the other way round.

Bruxism (teeth grinding) is not an absolute contraindication to clear aligner treatment, but it must be assessed carefully. Grinding increases the rate of aligner wear and can cause the trays to crack, particularly in the molar region where biting forces are highest. Some clinicians find that aligner trays act as a mild occlusal splint during the treatment period, which may reduce grinding forces on tooth surfaces. However, if grinding is severe, a proper occlusal splint should be considered alongside or instead of aligner treatment. Discuss your grinding history openly at consultation so your clinician can factor it into planning and advise on aligner material and thickness appropriate for your situation.

Yes — relapse after previous orthodontic treatment is one of the most straightforward cases for clear aligners. The movements required are typically smaller than the original correction, the teeth are familiar with being repositioned, and the overall case complexity is usually within short-to-medium aligner range. A clinical assessment is still required to confirm the degree of relapse, check gum and bone health, and plan the appropriate course. Many patients who experienced relapse also benefit from a fixed bonded retainer after retreatment to prevent a repeat, which should be included in the discussion from the outset.