Gaps and spacing.
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A gap can be a single space or part of a wider spacing pattern. A good plan starts with why the space is there.
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Understanding gaps and spacing
Spacing means there is a visible separation between neighboring teeth. A gap between the two upper central incisors is often called a diastema. The appearance, size and cause of a space can influence whether orthodontic movement alone is suitable.
Tooth size, missing teeth, previous treatment and the condition of the gums can all affect planning. Closing every visible space is not always the goal: a restorative plan may require keeping or redistributing space for a replacement tooth or a tooth-shape correction.
When aligners may help
Aligners can be considered for selected spacing cases, with movements planned across the arch. The aim is to manage space while maintaining appropriate tooth contacts and bite relationships. A small-looking gap can require more than moving two front teeth toward each other.
Where treatment has limits
A new or increasing gap should be assessed, especially if teeth feel loose or the gums bleed. Orthodontic treatment is not a substitute for treating gum disease. Missing-tooth spaces may require coordination with restorative dentistry.
Plan for your whole smile
Before recommending movement, a dental professional needs to assess your teeth, gums, bite and relevant dental history. Records may include photographs, scans or impressions and X-rays when clinically indicated. Any active decay or gum disease needs appropriate care first.
Aligners used in comprehensive orthodontics may involve attachments, elastics, space-management procedures or regular office visits. These options are not necessarily part of a remote aligner service. Hello My Teeth eligibility must be confirmed individually; inclusion in this guide does not mean every case is accepted.
Ask your clinician
- What is causing my spacing?
- Should every space close, or should some be preserved for restorative treatment?
- What retention plan will help maintain the result?
Time, cost and follow-up
Ask for a written estimate based on your diagnosis, including the wear schedule, monitoring, possible refinements and retainers. The condition name alone cannot predict treatment time or price. See current plans and pricing and confirm what your recommended plan includes.
Gaps and spacing and clear aligners
Can clear aligners close a front-tooth gap?
They may be suitable, depending on the cause, tooth proportions and bite. Your dentist should explain whether orthodontics, restorative treatment or a combination is appropriate.
Can aligners replace a missing tooth?
No. They move existing teeth. Planning for a missing tooth may involve space management together with a bridge, implant or another option discussed with your dentist.
Can gaps reopen after treatment?
Teeth can move after treatment. Follow the retainer plan and address any contributing factors identified by your clinician.
Further reading: ADA MouthHealthy: Orthodontics. Educational information; updated September 30, 2026.
Related alignment concerns
Midline misalignment
The upper and lower dental center lines do not coincide.
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General misalignment
Several alignment or bite concerns occurring together.
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Orthodontic relapse
Teeth shift after previous orthodontic treatment.
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understanding your smile.
An online questionnaire is a starting point. A dental professional must confirm your oral health, diagnosis and treatment suitability.
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