In brief: Gaps between teeth (diastemas) can be closed by moving the teeth with aligners or braces, by adding tooth-coloured material with bonding or veneers, or, when a tooth is missing, by replacing it with an implant or bridge. The right option depends on why the gap is there, how big it is and whether the rest of your smile needs changing too.
What causes gaps between teeth?
- Tooth and jaw size mismatch: teeth that are small for the jaw leave spaces between them. Small or peg-shaped upper side incisors are a common example.
- A large lip frenum: a thick band of tissue joining the upper lip to the gum between the front teeth can hold them apart.
- Missing teeth: a missing or extracted tooth leaves a space, and the neighbouring teeth may drift or tilt into it.
- Habits: thumb-sucking, tongue-thrusting or lip habits can push front teeth forward and apart.
- Gum disease: as bone support is lost, teeth can drift and fan out, opening new gaps in adulthood.
Finding the cause matters. A gap that has recently appeared or is getting bigger needs a gum check before any cosmetic treatment, because closing it without treating gum disease will not last.
Clear aligners or braces
Orthodontic treatment closes gaps by moving the teeth themselves rather than adding material. It suits gaps spread across several teeth, gaps combined with crowding or bite problems, and cases where the teeth are already a good size and shape.
Clear aligners are popular with adults because they are nearly invisible and removable. Fixed braces may suit more complex movements. Treatment usually takes several months or longer, and a retainer is needed afterwards because closed gaps tend to reopen without one. See our braces and aligners page.
Composite bonding
Bonding adds tooth-coloured composite resin to the sides of the teeth next to the gap, widening them slightly until they meet. It is usually done in one visit, often without anaesthetic and with little or no drilling.
It works best for small gaps where the teeth will still look in proportion after widening. Composite can stain and chip over time and may need polishing or repair, but it can usually be adjusted or removed later. Read about tooth bonding.
Porcelain veneers
Veneers are thin ceramic shells bonded to the front of the teeth. They can close a gap and also change colour, shape and length in the same treatment, which makes them a good option when the gap is one of several things you want to change.
Veneers usually need some enamel to be removed and take two or more visits. A digital smile design helps plan the width of each tooth so the result looks balanced rather than too wide. For a direct comparison, see veneers vs composite bonding.
Implants or bridges for a missing tooth
If the gap is there because a tooth is missing, bonding or veneers on the neighbouring teeth cannot fill it properly. The usual options are a dental implant, which replaces the root and does not involve the neighbouring teeth, or a bridge supported by the teeth on either side.
In some cases, especially in younger patients with a congenitally missing tooth, orthodontics can close or redistribute the space instead. This is decided with your orthodontist and restorative dentist together.
How to choose
- Small gap, good tooth shape and colour: bonding or aligners.
- Several gaps or bite problems: aligners or braces, sometimes followed by bonding.
- Gap plus colour or shape concerns: veneers, sometimes after aligners.
- Missing tooth: implant or bridge.
- Large frenum: a minor gum procedure (frenectomy) may be combined with orthodontic closure to reduce the risk of the gap reopening.
Your dentist will examine the gap, your gums and your bite, and may take X-rays before suggesting the simplest option that will give a stable result.
Want to close a gap in your smile? Book a Consult at our Bandra West or Kemps Corner clinic.
