Gap Teeth & Diastema: Can Clear Aligners Fix Them?

Can a diastema (gap between teeth) be corrected with clear aligners? Full answer with treated cases, timelines and conditions.

Diastema — the visible gap between two teeth, most often the upper central incisors — is one of the most requested corrections in orthodontics. And the good news: it is one of the cases where clear aligners particularly excel. Here is what you need to know.

What is a diastema?

A diastema is an abnormal gap between two adjacent teeth. It is called "median" when it involves the two upper central incisors — the most common case. It can be caused by a short labial frenum, atypical bone growth, periodontal disease or simply genetics. Some consider it a sign of beauty; others wish to correct it.

Can aligners close a diastema?

Yes — in the vast majority of cases, clear aligners are perfectly suited to closing a diastema. Digital planning precisely calculates the translation movements needed to progressively bring the teeth together. Results are generally very satisfactory in 3 to 6 months for mild to moderate diastemas.

Table: diastemas and aligners by size

Are there cases where aligners are not enough?

For very large diastemas or those combined with other issues (deep overbite, skeletal discrepancy, missing teeth), a combined approach may be needed: orthodontic treatment + labial frenectomy + prosthetics or composite bonding. Your Infinity Aligner dentist will guide you toward the most suitable treatment plan for your situation.

After correction: how to stabilise the result?

Retention is mandatory after closing a diastema. It can take the form of a night retainer tray or a bonded wire (fixed retainer) behind the incisors. Without retention, the gap can gradually reopen — especially if a short labial frenum has not been treated.

Conclusion

If you have a gap between your teeth and want to correct it discreetly, Infinity Aligner clear aligners are very likely the right solution. Consult a certified dentist for a personalised assessment and a 3D simulation showing the expected result before you even start.