Causes of Gapped Teeth

A gap between two teeth is called a diastema. Gaps can develop because of genetics, small or missing teeth, jaw-size differences, childhood habits, gum disease, tooth loss, or the position of the tissue between the upper front teeth.

Many gaps are harmless and do not require treatment. However, a new or widening gap in an adult should be evaluated, especially if it occurs with bleeding gums, recession, bad breath, or loose teeth.

To determine what is causing a gap in your smile, call (480) 279-5611 or schedule a dental examination with Premier Family Dental.

What Is a Diastema?

A diastema is a visible space between two teeth. It most commonly appears between the upper front teeth, but spacing can occur anywhere in the mouth.

Some people have one noticeable gap, while others have spacing between several teeth. The cause, location, and stability of the gap help determine whether treatment is needed.

Are Gaps Between Teeth Normal?

Yes. A gap may be a normal variation, particularly when it has been present for many years and does not affect your bite, speech, chewing, or gum health.

Spacing is also common in children as baby teeth fall out and permanent teeth erupt. Some childhood gaps close naturally as the jaw and teeth continue developing.

A gap that suddenly appears or becomes wider in adulthood is different. It may indicate gum disease, tooth movement, missing teeth, or changes in the supporting bone.

What Causes Gapped Teeth?

Genetics

Tooth size, jaw size, missing teeth, and the shape of the dental arch can be inherited. If teeth are relatively small compared with the jaw, spaces may remain between them.

Small or Undersized Teeth

Some teeth may be naturally smaller than average. Upper lateral incisors, which sit beside the two front teeth, are particularly likely to be undersized or peg-shaped.

Smaller teeth may leave extra space even when the rest of the bite is properly aligned.

Missing Teeth

A tooth may be missing because it never developed, was extracted, or was lost because of decay, injury, or gum disease. Neighboring teeth may gradually shift toward the open space, creating additional gaps or changes in the bite.

Jaw and Tooth-Size Differences

A wide dental arch combined with relatively narrow teeth may create generalized spacing. A smaller jaw with larger teeth is more likely to cause crowding instead.

Enlarged or Low-Attaching Labial Frenum

The labial frenum is the band of tissue connecting the inside of the upper lip to the gums. If it is unusually thick or attaches low between the upper front teeth, it may contribute to a central gap.

A dentist or orthodontist must determine whether the frenum is actually preventing the teeth from moving together before recommending treatment.

Thumb-Sucking or Prolonged Pacifier Use

Strong or prolonged sucking habits can place pressure on developing teeth and jaws. This may move the upper front teeth forward and contribute to spacing or an open bite.

The effect depends on the habit’s frequency, duration, and intensity.

Tongue Thrust

Tongue thrust occurs when the tongue repeatedly presses against or between the front teeth during swallowing, speaking, or resting. Over time, this pressure may contribute to tooth movement and spacing.

Gum Disease

Periodontal disease can damage the gums, ligaments, and bone that support the teeth. As support is lost, teeth may become loose, shift position, or develop new spaces.

Warning signs include:

• Bleeding or swollen gums
• Persistent bad breath
• Gum recession
• Pus or drainage
• Pain while chewing
• Loose or shifting teeth
• A new or widening gap

If a gap is related to gum disease, the infection and supporting tissues must be treated before cosmetic or orthodontic treatment begins. Learn more about periodontal treatment for unhealthy gums in Gilbert.

Tooth Loss

When a tooth is lost and not replaced, the neighboring teeth may tilt or drift into the empty space. The opposing tooth may also move because it no longer contacts a tooth during biting.

These changes can create new gaps, trap food, and affect the bite.

Dental Injury

An injury may loosen, move, or knock out a tooth. Even if the damage is not immediately obvious, changes in tooth position may develop afterward.

Prompt dental evaluation is important after a blow to the mouth, sports injury, or accident.

Tobacco Use and Gum Damage

Tobacco does not usually create a diastema directly. However, smoking and smokeless tobacco increase the risk of gum disease, bone loss, and tooth loss, which can cause teeth to shift and gaps to develop.

What Causes a New Gap Between Front Teeth?

A gap that has existed since childhood may be harmless. A new gap between adult teeth should be examined because it may be caused by:

• Periodontal bone loss
• Teeth shifting after tooth loss
• Uneven bite pressure
• Tongue thrust
• Changes after orthodontic treatment
• Loose or mobile teeth

Do not assume that a new space is only cosmetic, particularly if your gums bleed or the teeth feel loose.

Can Gapped Teeth Cause Dental Problems?

Many gaps do not cause health problems. In some cases, spacing may:

• Trap food between teeth
• Make certain areas more difficult to clean
• Contribute to gum irritation
• Affect speech sounds
• Change the way the teeth meet
• Cause self-consciousness about appearance

The presence of a gap alone does not mean treatment is necessary. Your dentist will consider oral health, bite function, stability, and personal preference.

How Does a Dentist Determine the Cause?

Your dentist will examine the teeth, gums, frenum, bite, and surrounding tissues. The evaluation may include:

• Measuring the size and location of the gap
• Checking for missing or undersized teeth
• Evaluating gum recession and periodontal pockets
• Testing whether any teeth are loose
• Reviewing oral habits and previous orthodontic treatment
• Examining the bite and jaw alignment
• Taking dental X-rays when needed

Premier Family Dental provides comprehensive dental examinations in Gilbert to identify the cause before recommending treatment.

How Can a Gap Between Teeth Be Fixed?

No Treatment

Treatment may not be necessary when the gap is healthy, stable, and does not affect function. Some patients choose to keep their natural spacing.

Orthodontic Treatment

Braces or clear aligners can gradually move teeth and close spaces. Orthodontic treatment may be the best option when the gap is related to broader alignment or bite concerns.

A retainer is usually needed afterward to help prevent the space from reopening.

Dental Bonding

Dental bonding uses tooth-colored resin to make one or both teeth slightly wider, reducing the appearance of a small gap.

This treatment may be appropriate when the teeth are healthy and the space is primarily cosmetic. Bonding may not be suitable for large gaps, active gum disease, or significant bite problems.

Dental Veneers

Veneers can change the width, shape, color, and proportions of visible front teeth. They may be considered when spacing occurs with discoloration, worn edges, or uneven tooth shape.

Learn more about dental veneers in Gilbert.

Frenectomy

A frenectomy removes or reshapes an enlarged frenum. This may be recommended when the tissue interferes with orthodontic closure or contributes to the gap reopening.

Frenectomy timing should be coordinated with orthodontic treatment rather than performed automatically for every front-tooth gap.

Periodontal Treatment

When gum disease causes tooth movement, treatment must focus first on controlling infection and preserving the supporting bone and tissues.

Closing the gap without treating active periodontal disease may produce unstable results and allow the teeth to continue shifting.

Replacing a Missing Tooth

If spacing is caused by a missing tooth, treatment options may include:

• A dental implant
• A dental bridge
• A removable partial denture
• Orthodontic space closure

The best option depends on the location of the missing tooth, bone support, bite, oral health, and treatment goals.

Can You Close a Tooth Gap at Home?

No. Do not use rubber bands, elastic loops, string, or online gap-closing devices. These methods can slide beneath the gums and damage tooth roots, ligaments, and supporting bone.

Moving teeth too quickly or without professional monitoring can cause:

• Gum recession
• Root damage
• Bone loss
• Loose teeth
• Tooth loss
• Bite problems

Professional treatment moves teeth gradually and monitors the health of the roots, gums, and bite.

Can a Gap Reopen After Treatment?

Yes. Teeth naturally tend to shift after orthodontic treatment. A gap may also reopen when tongue pressure, an enlarged frenum, gum disease, or another underlying cause has not been addressed.

Wearing a retainer as directed and maintaining healthy gums can reduce the risk of relapse.

When Should You See a Dentist?

Schedule an examination if:

• A new gap appears in adulthood
• An existing gap is becoming wider
• Your teeth feel loose or are shifting
• Your gums bleed, swell, or recede
• Food repeatedly becomes trapped
• You have persistent bad breath
• A tooth is missing or was recently extracted
• The gap affects your bite, speech, or confidence

Early evaluation is especially important when spacing may be related to gum disease or supporting bone loss.

Frequently Asked Questions About Gapped Teeth

Are gapped teeth genetic?

They can be. Tooth size, jaw size, missing teeth, and frenum position may be inherited.

Do gaps between children’s teeth close naturally?

Some do. Spacing can change as permanent teeth erupt and the jaw develops. A dentist or orthodontist can monitor whether treatment is necessary.

Can gum disease create gaps?

Yes. Periodontal disease can damage the supporting bone and allow teeth to shift, become loose, or develop new spaces.

Can a gap close on its own in an adult?

It is uncommon for a stable adult gap to close without treatment. Any sudden movement should be examined to identify the cause.

Are braces the only way to close a gap?

No. Depending on the cause and size, treatment may include clear aligners, bonding, veneers, frenectomy, periodontal care, or tooth replacement.

How quickly can bonding close a gap?

Bonding may sometimes be completed in one appointment. However, it is only appropriate when the teeth, gums, proportions, and bite make it a predictable option.

Can veneers close a large gap?

Veneers can close certain spaces, but making teeth excessively wide may produce unnatural proportions. Orthodontic treatment may be more appropriate for larger gaps.

Should every tooth gap be treated?

No. A healthy, stable gap that does not affect function may not require treatment unless the patient wants a cosmetic change.

Learn What Is Causing Your Tooth Gap in Gilbert, AZ

A gap may be a harmless part of your smile or a sign that teeth are shifting because of gum disease, tooth loss, or bite changes. Identifying the cause is the first step toward choosing the right treatment.

Premier Family Dental provides general dentistry in Gilbert for patients with spacing, missing teeth, gum concerns, and cosmetic treatment goals.

Call (480) 279-5611, schedule a dental appointment with Premier Family Dental, or view Premier Family Dental’s Gilbert location, hours, and directions on Google Maps.