A missing tooth does not stop you having braces or clear aligners. It changes how they are planned. Before anything is fitted, the dentist or orthodontist has to settle one question for each gap: should the neighbouring teeth be moved in to close it, or should the space be set to the right width and kept for an implant, bridge or other replacement later? Most of what follows in treatment flows from that choice.
The first decision is close or keep
Closing a space means moving teeth along the arch until the gap is gone, so no artificial tooth is needed. Keeping a space means guiding the teeth so the gap ends up the correct size and shape for a replacement, with the roots of the teeth either side parallel and clear of the site. Neither is better in every case. The size and position of the gap, how the back teeth bite together, the shape and colour of the neighbouring teeth, how much gum shows when you smile, and your own preferences about further treatment all feed into it.
When a neighbouring tooth can stand in
A common example is an upper lateral incisor (the small tooth beside the front tooth) that never developed. One option is to move the canine forward into that position and reshape it with careful contouring and tooth-coloured bonding so it reads as a lateral incisor. Reviews of this approach suggest that, in well-chosen cases, appearance and gum health can be comparable with an implant, although the studies are mostly small and the evidence is not strong enough to call one option superior. Canine substitution suits some smiles better than others: a very pointed or dark canine, or a bite that relies on the canines for guidance, can make it harder.
A similar weighing of tooth movement against bonding comes up with an ordinary gap between the front teeth. Missing premolars can also often be closed, since the change is hidden further back in the mouth.
Keeping a space for an implant or bridge
When no nearby tooth can take over, or the gap is a molar or several teeth wide, the space is usually kept. During treatment, a temporary tooth can be attached to the brace wire or built into an aligner so the gap does not show.
Timing is the main catch for teenagers. Implants do not move with the surrounding teeth and jaw, so they are generally placed only after facial growth has finished, which may be late teens or into the twenties and varies a lot between people. In the meantime a retainer with a false tooth or a bonded bridge can hold the space. Some adults also have bone that has shrunk where a tooth was lost long ago, which may need a bone graft before an implant.
How the two approaches compare
| Closing the gap | Keeping space for a replacement | |
|---|---|---|
| Often suited to | Missing premolars, some missing lateral incisors with a suitable canine | Molars, wider gaps, no suitable neighbouring tooth |
| Extra treatment afterwards | Reshaping or bonding of the substitute tooth | Implant, bridge or partial denture |
| When the result is complete | Soon after the braces or aligners finish | After the replacement is placed, which for young people may mean waiting for growth to finish |
| Ongoing care | Retainer and normal hygiene | Retainer plus care and review of the replacement |
Teeth that never formed and teeth that were lost
A tooth that never developed usually leaves a tidy space with the neighbouring teeth fairly upright. A tooth lost years ago to decay or injury is different. Teeth beside the gap tend to tip into it, and the opposing tooth may drift down or up towards it. Braces or aligners can be used to upright tipped teeth and recreate a usable space, which can make a later implant or bridge easier to place and better aligned. This is a common reason adults have orthodontic treatment before tooth replacement.
Several teeth missing
With multiple gaps, moving teeth long distances to close everything can upset the bite, so the usual aim is to distribute the remaining teeth evenly and set up good spaces for replacements. Planning works best when the person doing the orthodontics and the dentist who will place the replacements agree on the end point before starting. Once the teeth are where they need to be, holding them there with a retainer matters as much as in any other case, because a space that relapses can become too narrow for an implant.
What people ask about gaps and braces
Do clear aligners work with missing teeth?
Often, yes. Aligners can close or redistribute space in many cases, and a tooth-coloured filler can be added to the aligner over a gap. Large movements, such as closing a molar space, can be more predictable with fixed braces or with extra support.
Will a missing tooth make treatment take longer?
Not necessarily. Closing a large space can add time, while keeping a space can be quicker for the orthodontic part but adds the replacement stage afterwards.
What is the first appointment like?
Records such as photographs, X-rays and scans are taken so the gaps can be measured and the options shown to you. Our guide to having braces fitted covers what happens next, and having braces removed covers the final stage.
If you have a gap and are thinking about straightening your teeth, our team can assess the space, talk through clear aligners and tooth replacement, including implants placed at the practice, and refer for an orthodontic opinion where that suits your case. See our current offers or learn more about our general dentistry.
This article is general information only and is not a substitute for an individual orthodontic assessment.
