Diastema: Closing Gaps in Teeth with Braces, Veneers and Other Treatments


A gap between two teeth is known as a diastema. Gappy teeth are really common in children but are generally not something to be worried about since the spaces often disappear as adult teeth erupt.

woman with dental diastema teeth
Some people are happy to live with a gap in their teeth

If you have a diastema or several gaps between your teeth after all of your adult teeth have come through, you may want to explore different malocclusion treatments for diastema closure. Or, you might not – some people choose to keep their diastema, especially between the two front teeth. It’s actually believed to bring wealth, fertility or luck in certain cultures.

Here we’ll go through everything you need to know, such as:

  • The definition of a diastema
  • What causes a diastema
  • Closing gaps in teeth with braces
  • How to close gaps in teeth without braces
  • Answers to some other common questions

 We hope this helps you decide the best course of action for the gaps between your or your child’s teeth.

Diastema definition

So, what is diastema? The simple definition of a diastema is a gap between two teeth. It’s most noticeable with gappy front teeth, but spaces can occur anywhere in the mouth. A gap in the lower teeth is called a mandibular diastema whereas a gap in the front two teeth is called a midline or median diastema.

large gap between front teeth
Some gaps are more obvious than others

According to this report in the Journal of the American Dental Association about maxillary midline diastema, between 1.6% and 25.4% of people have a general or midline diastema. That’s quite a gap! Although the findings are presented in a fairly technical way, it’s worth scrolling through if you want to see some pictures of diastema closure before and after.

Gaps in baby teeth are pretty normal because at this stage the jaw is still growing and the teeth are developing. As children grow up, lose their milk teeth, and get their adult teeth, any spaces often close naturally. If gaps are left then you can seek advice from a dentist.

People with spaces between their teeth need to take extra care with their oral health. A water flosser can help, making it easier to clean gaps between teeth.

What causes gaps in front teeth?

There are quite a few different causes of diastema. The main one is a mismatch in teeth vs jaw size. If your jaw is too big or teeth are too small, they won’t align properly because there is too much space in the mouth. The size of your teeth and jaw can be determined by genetics, in such cases making diastema hereditary.

Gaps in front teeth can also be caused by extra tissue growing above the teeth. The bit of skin between your lip and top front teeth is called your frenum and this can overgrow sometimes. If it does grow too much it can force a diastema between your two upper front teeth.

gappy teeth child
A lot of the time, children’s gappy teeth fix themselves

Other things that cause a diastema are generally based on behavior, such as:

  • Thumb sucking
  • Tongue thrusting
  • Poor dental hygiene leading to gum disease

Thumb sucking will normally cause a midline diastema because this is where the thumb exerts pressure. Tongue thrusting can cause a mandibular diastema if the tongue is pushing against the lower teeth when swallowing. Both of these habits can be corrected in childhood to prevent long term issues. 

If you suffer from periodontitis (severe gum disease), you could end up losing teeth. The infection can also lead to bone loss in your jaw which can make your teeth move and create gaps.

What is a peg lateral?

Sometimes the tooth called the second incisor – that’s the one next to the very front two teeth – doesn’t develop properly. This is known as a peg lateral. When this happens, the tooth is quite small and has a pointy shape. Because it is smaller than it should be, there might be gaps on either side.

Crowns, teeth implants and veneers (see below) are all options for fixing a peg lateral.

How to close gaps in teeth

Closing gaps in teeth isn’t normally a complicated process, provided your case isn’t too extreme. There are various ways to close gaps in teeth, which you can read about below. Your dentist will be able to talk you through which treatment is the best way to close gaps in your teeth, since every case is different.

Closing gaps in teeth with braces

Braces can be used to adjust the position of diastema teeth and close gaps in the mouth. Larger gaps usually require treatment with braces, whereas smaller gaps can be closed in other ways – more on these in a moment.

You’ll need to wait until all adult teeth have erupted before braces for gaps in front teeth or general diastema can be considered. This is because a child’s jaw can grow at a different rate to their teeth, and the mix of milk teeth and adult teeth can cause natural spacing between teeth. Once everything has developed, if any problems still persist then your dentist will discuss different braces options.

In this time-lapse video you can watch the progress made by one patient with metal braces to close the gap in his front teeth:

Invisalign for a diastema

If you want to close gaps in teeth without metal braces, invisible braces like Invisalign could be a good choice. These clear aligners are very hard to notice, unlike conventional braces, but they are still an effective treatment for mild and moderate cases of teeth spacing. They also have the added convenience of being removable.

Do you want to check whether you might be a suitable candidate for diastema treatment with invisible braces? Just fill in some details in the form below and you’ll have your answer in a couple of minutes!

Check your eligibility
for invisible braces
Step 1 / 4
1 Choose the image that most closely resembles your teeth:
2 Give some more information about the spaces between your teeth:
Upper teeth:
Lower teeth:
3 General information
I would like to begin orthodontic treatment:
Have you previously had orthodontic treatment (with metal braces, clear braces, or any other type)?
4 Please provide the following details to complete the process:

How can I get rid of gaps in teeth without braces?

Braces aren’t the only solution for filling gaps in teeth. If you want to close gaps in teeth without braces, two other options that may be offered are veneers and composite bonding. These are best for closing just one or two gaps; if several of your teeth are over-spaced then braces may be a better option.

Your dentist will discuss which treatment is most suitable for you, but here we’ll go through the pros and cons of each option for closing gaps in teeth without braces to help you understand your options.

Porcelain veneers

veneers for gaps in teeth fix
Smaller gaps can be treated with veneers or bonding

A porcelain veneer is a thin cover that fits on top of your natural teeth to alter the shape and/or color. Fixing a small diastema with veneers is quite straightforward, but this treatment is only suitable for adults.

When filling gaps between teeth using veneers, the dentist simply makes the veneers slightly wider than the original teeth. When they are fitted, they meet in the middle and hide the gap.

Porcelain veneers usually require two dental visits; one to prepare the teeth and take measurements for the veneers, and another to fit them once they have been made in a lab. You can read more about veneers here.

Veneers can help cover up small gaps in teeth naturally, but the results may not look so good if used for big gaps in teeth. You don’t want to look like you have oversized front teeth! Dentists are good judges of what will look natural; they look at different smiles every day, after all, so you should trust your dentist’s opinion about the best option for you.

Diastema closure with composite bonding

With diastema bonding, a composite material is applied directly to the teeth – no lab work required. The dentist builds up and shapes the composite to give the desired appearance. In the case of filling gaps in teeth, the composite is used to extend the tooth slightly to close the diastema.

Composite material can be used to cover the original tooth completely, in which case it’s called a composite veneer. It’s also a common treatment for chipped teeth. You can read more about the procedure for tooth bonding here.

In the following video, Brittany talks about her treatment with bonding and getting the gaps filled in her teeth without braces.

Veneers vs. bonding for a diastema

The table below summarises the two main options for treating a diastema without braces, including costs:

Porcelain Veneers Composite Bonding
What does it involve? A porcelain cover is applied to the teeth, made slightly wider than the teeth to fill in a gap A composite material is added directly to the teeth to build them up, increasing the size of the teeth to fill the gap
How long does it take? 2 visits – one consultation and another 1-3 weeks later for fitting Can be done in one visit
What does it cost? $500 - $2,500 per tooth $250 - $1,200 per tooth
Pros? Long lasting and hard wearing Fast and lower cost
Cons? Takes away some healthy tooth, takes two dentist visits, only works for small gaps Will need touching up – bonding lasts up to 5 years, only works for small gaps

How much does a diastema closure cost?

Filling gaps between teeth is unlikely to be considered a medical necessity, and therefore state-funded insurance usually doesn’t cover diastema closure costs in the US, but your private insurance plan might.

Children and adults with severe cases of teeth spacing, perhaps as a result of hypodontia, may be eligible for braces and then dentures or dental bridges to fill the gaps. Medicaid and CHIP also covers treatment for periodontitis, which may be the cause of gaps between teeth. Read more about services covered by Medicaid here.  

We’ve already covered the prices for veneers and bonding in the table above. Treating diastema teeth with braces costs between $2,000 and $13,000, depending on the type of braces used. For more information about the different kinds of braces you can read this guide. You may also want to explore your finance options for dental work.


Do braces close gaps in teeth?

Yes. Especially if your diastema is more severe, braces may be the only option available to you.

Can a retainer fix gaps in teeth?

Retainers can be used for some orthodontic treatments, but are limited in what movement they can achieve and don’t deliver quick results. The normal course of action would be to have permanent or removable braces to correct the diastema and then wear a retainer to maintain the new alignment.

Removable aligner braces are probably the closest option to a retainer, since they aren’t attached to your teeth like traditional braces. They are also far less noticeable than a metal wire retainer. You can quickly check your eligibility for removable aligner braces with our free test.

How can I fix gaps in teeth naturally?

It really depends what you mean by ‘naturally’. Although braces, veneers, and bonding may not be considered natural, they are safe and effective and deliver natural-looking results. But if you mean how can you close gaps in teeth at home, without professional help, then there really is no safe way.

There is a trend for people to use elastic bands to close gaps in their teeth by trying to pull them together. The American Association of Orthodontists reported on the trend in 2017, saying that it could be dangerous and cause more damage than it is trying to fix.

Your dentist will be able to talk you through all of your options to close gaps in your teeth if you’re worried about the appearance of your smile.

Are gaps in baby teeth normal?

gaps in baby teeth
Baby teeth often have gaps as the jaw grows

Put simply, yes, gaps are normal in baby teeth. At this age, the jaw is still developing and may progress faster than teeth growth. It’s also natural for there to be gaps when the child has a mixture of baby and adult teeth.

If there are still gaps after their jaw has stopped developing and all the teeth have erupted, and they want to get their diastema fixed, then a dentist can advise which method would work best.

I have gaps in my teeth after braces, what can I do?

Braces are designed to correct the position of your teeth and give you a properly aligned smile. If you aren’t happy with the results of your treatment, then refer back to the dentist or orthodontist who treated you. Do make sure that you wear your retainers as instructed after your treatment; this helps ensure your teeth stay in the correct position.

Does flossing create gaps in teeth?

There isn’t any reason that normal flossing would cause gaps to appear between your teeth. It is possible that you are catching your gums as you floss between your teeth and this could cause them to start to recede.

Our guide on how to floss properly will help you with the correct technique. If you are worried about your gums or gaps appearing in your teeth check that everything is ok with your dentist, it could be a sign of gum disease.

How can I fix small gaps in teeth?

If you do not have severe diastema but are worried about the appearance of your smile, you may be able to get veneers to hide the gaps. 


A diastema, or gap in your teeth, is generally not a medical concern in itself. But, there can be underlying reasons you have gaps in between your front teeth, or between other teeth, so it’s best to see a dentist for a proper assessment.

Closing gaps is reasonably straightforward and traditional braces aren’t always necessary. Invisible braces like Invisalign, for instance, can often be used (don’t forget you can check your eligibility here).

Don’t be too concerned if your baby has gaps in their teeth; this is quite common and may well fix itself when their adult teeth erupt. 

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