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A gap between teeth, sometimes called a diastema, can be a natural part of how a smile develops. It may also appear or widen because of changes in the teeth, gums, or the way the mouth functions. The cause matters: a gap that has always been there is different from one that is newly forming.

What causes a gap between teeth?

Natural spacing and development

Some children have spaces between baby teeth as their mouths grow, and adults may have a natural gap that has been present for years. If you are wondering how to fix gap teeth, first consider whether the space is longstanding or a recent change.

Differences in tooth and jaw size

Teeth that are relatively small compared with the jaw may leave extra room. A dentist can assess the overall bite and tooth positions rather than judging the gap in isolation.

Habits that can shift teeth

Repeated pressure on the teeth, such as persistent thumb sucking or pushing the tongue against the front teeth, may contribute to spacing. Mention any ongoing habit during a dental visit.

Gum disease or missing teeth

Gum disease can damage the tissues and bone that support teeth, allowing them to loosen or shift. A gap may also form when a tooth is missing. See our gum disease page.

Get the cause checked before choosing a treatment

Different causes call for different approaches, and treating the appearance alone may not solve the underlying issue.

What a dentist looks for during an exam

A dentist may examine the gap, nearby teeth, your bite, and gum health, and may use X-rays to assess roots, bone, or missing teeth.

Why a new or widening gap needs attention

A space that is new or getting larger deserves an assessment, especially with loose teeth, bleeding or swollen gums, or changes in your bite.

How the cause affects your treatment options

If your teeth and gums are healthy and the gap is stable, cosmetic treatment or orthodontics may be options. If gum disease or a missing tooth is contributing, that may need attention first.

Compare cosmetic fixes for small gaps

For a small gap between otherwise healthy teeth, a dentist may discuss bonding or veneers. These change the visible shape of teeth rather than moving them.

Dental bonding for a quick, conservative change

With bonding, a dentist adds tooth-colored resin to one or both teeth and shapes it to reduce the visible space. Ask how it will be maintained if it chips or wears.

Veneers for a broader smile makeover

Veneers are thin coverings attached to the front surfaces of teeth. They may suit someone who wants to change more than the gap, such as shape or color. Explore a full smile makeover.

How bonding and veneers compare on cost and upkeep

Consideration Bonding Veneers
What changes Adds shaped resin to teeth Covers the front surface of teeth
Scope Often considered for a limited adjustment May suit a broader appearance change
Tooth preparation May require little or no removal, depending on the case May require enamel preparation
Upkeep Can chip or wear and may need repair Requires ongoing care and professional follow-up

Ask for a written estimate; costs vary by dentist and number of teeth.

When cosmetic fixes may not address the underlying problem

Bonding and veneers do not treat gum disease, replace a missing tooth, or correct a bite.

Compare orthodontic treatments

Orthodontic treatment moves teeth over time rather than masking a gap. Learn about orthodontics at our Phoenix office, and see the ADA’s orthodontics overview.

Clear aligners for gradual tooth movement

Clear aligners are removable trays that move teeth in stages under a clinician’s supervision. See our Invisalign page.

Braces for more complex alignment

Braces use brackets and wires and may be considered when alignment needs are more involved. Visit our braces page.

How retainers help keep teeth in place

Retainers help maintain new tooth positions. Retention is part of orthodontic care, not an optional finishing touch.

What to expect for treatment time and follow-up

Treatment time varies with the amount of movement and how consistently the plan is followed. Ask for an estimated timeline.

Find out when additional dental treatment may be needed

Sometimes the gap is only one part of a broader dental issue, and the order of steps is planned around oral health.

Treating gum disease before closing a gap

A dentist may recommend periodontal treatment before considering cosmetic changes or tooth movement.

Replacing a missing tooth

Options can include a bridge or an implant-supported restoration, depending on your oral health.

When a frenectomy may be considered

A frenectomy changes the tissue attachment between the lip and gums. It may be considered when that tissue is contributing to a gap, but it is not a routine fix.

Why some cases need a combination of treatments

A gap can have more than one contributing factor, so ask each provider how the proposed steps fit together.

Choose the option that fits your needs

There is no single best way to close every gap. A suitable plan balances the cause, your gum and tooth health, your bite, and your preferences.

Weigh cost, treatment time, and durability

A few practical questions can make estimates easier to compare:

  • What is included in the quoted fee, and could additional visits or treatment add to it?
  • How long might the treatment take, including follow-up?
  • What maintenance, repairs, or replacement may be needed later?
  • How will the plan affect natural tooth structure?

Review our financial options.

Consider your bite and overall oral health

Share concerns such as sensitivity, loose teeth, bleeding gums, or recent changes in spacing.

Ask about risks, maintenance, and expected results

It is also reasonable to ask about alternatives, including leaving a stable gap alone.

Avoid trying to close a gap with DIY methods

Do not use rubber bands or improvised devices to move teeth. Unsupervised force can injure gums and teeth.

Conclusion

A gap between teeth can be natural, cosmetic, or connected to a change in oral health, so the first step is understanding its cause. Bonding, veneers, orthodontics, and other dental care each serve different needs. To discuss your smile, contact Radiant Smiles Phoenix.

Frequently Asked Questions

Can a gap between teeth close on its own?

Some spacing changes as children grow and permanent teeth come in, but an adult gap should not be expected to close on its own. A dentist can assess whether the space is stable or changing.

Is bonding or orthodontic treatment better for a small gap?

Neither is universally better. Bonding changes the visible shape of teeth, while orthodontic treatment moves teeth; a dental professional can explain which approach fits your bite, tooth health, and goals.

Do veneers permanently change your teeth?

Veneer treatment may involve preparing the tooth surface, and that change can be irreversible. Ask what preparation is planned and whether a less invasive alternative is appropriate.

Can gum disease cause a gap between teeth?

Gum disease can affect the support around teeth and may contribute to movement or spacing. A dentist should evaluate gum health, particularly if the gap is new or widening.

How long does it take to close a gap with orthodontics?

The timeline depends on the amount of movement required, the treatment plan, and individual response. Your orthodontic provider can give an estimate after examining your teeth and bite.

Will I need a retainer after orthodontic treatment?

Retainers are commonly used to help keep teeth in their new positions after orthodontic treatment. Your provider can tell you which type to use and how to follow the wear instructions.

Are DIY methods safe for closing a tooth gap?

No. Applying pressure with rubber bands or other improvised devices can harm teeth and gums. Have a dentist or orthodontist assess the gap and recommend safe care.

About the Author

This article was prepared for Radiant Smiles Phoenix, 380 E Virginia Ave, Phoenix, AZ 85004, and reflects the experience of our doctors. Dr. Jason Bajwa earned his bachelor’s degree in Kinesiology at Simon Fraser University and his dental degree at Tufts University School of Dental Medicine, followed by a residency emphasizing oral and maxillofacial surgery, facial fractures, and implants. Dr. Sharan Sandhu graduated from the University of Southern California, was recognized by the National Dental Honor Society and by USC for restorative dentistry, and holds certifications in Invisalign and soft tissue lasers. The practice is a member of the Arizona Dental Association and the American Dental Association.

Disclaimer

This content is for general educational purposes only and is not a substitute for professional dental advice, diagnosis, or treatment. Consult a qualified dental professional about your specific situation.