Glossary
Diastema
D

Diastema

dy-uh-STEE-muh IPA: /ˌdaɪ.əˈstiː.mə/

Diastema is a space or gap between two teeth, most commonly seen between the upper front teeth.

Understanding 

Diastema

Diastema refers to a gap or space between teeth, most often occurring between the upper front teeth (central incisors). This spacing can vary in size and may be present in both children and adults. In some cases, diastemas are a normal part of dental development, especially during childhood as teeth and jaws grow. Diastemas can develop for several reasons, including differences in tooth size and jaw size, missing teeth, or the presence of an oversized labial frenum, which is the tissue connecting the upper lip to the gums. Habits such as thumb sucking or tongue thrusting can also contribute to spacing by applying pressure to the teeth over time. If this condition persists, it may remain stable or change depending on underlying causes. In many cases, diastema is primarily a cosmetic concern, but in some situations, it may affect bite alignment or be associated with other dental conditions.

Clinical Significance

May be cosmetic concern, can be associated with bite issues, speech concerns in some cases, or underlying dental conditions.

Common Causes

Genetic tooth and jaw size differences, missing teeth, oversized labial frenum, thumb sucking, tongue thrusting, periodontal disease

Signs & Symptoms

Visible gap between teeth, most commonly upper front teeth, possibly food trapping, speech changes in some cases

How It's Detected

Clinical exam, visual inspection, dental measurements, X-rays to evaluate underlying causes

Treatment Options

Monitoring, orthodontic treatment (braces or aligners), bonding or veneers, frenectomy if indicated, no treatment when not a concern

Benefits to Treatment

Improves appearance, closes gaps, enhances function when needed, supports overall alignment, may improve speech in some cases

Prevention

Early orthodontic evaluation, management of oral habits, monitoring dental development, regular dental visits

Frequently Asked Questions

Q

Is a diastema normal?

Yes, a diastema can be normal, especially in children. In many cases, spacing between front teeth is part of normal dental development and may close as permanent teeth erupt. In adults, a diastema may persist and is often a natural variation in tooth alignment. Whether it requires treatment depends on function, aesthetics, and underlying causes.

Q

What causes a gap between front teeth?

A gap between front teeth can be caused by several factors. In many cases, it results from a mismatch between tooth size and jaw size. Other causes include an enlarged labial frenum, missing teeth, or habits such as thumb sucking or tongue thrusting. Periodontal disease can also lead to spacing due to bone loss around teeth.

Q

Can a diastema close on its own?

In children, a diastema may close on its own as the permanent teeth develop and erupt. However, in adults, gaps are less likely to close without treatment. In many cases, the underlying cause determines whether spontaneous closure is possible. A dental evaluation can help assess the likelihood of change.

Q

What is the most common treatment for diastema?

The most common treatment for diastema is orthodontic care, such as braces or clear aligners, which gradually move teeth closer together. In some cases, cosmetic options like bonding or veneers may be used to close small gaps. If an oversized frenum is contributing, a minor surgical procedure may be considered.

Q

Does a diastema affect oral health?

A diastema does not always affect oral health and is often primarily a cosmetic concern. However, in some cases, gaps may contribute to food trapping or be associated with underlying conditions such as gum disease or bite issues. A dental evaluation helps determine whether the spacing has any functional impact.

CDT Codes

D0150
Comprehensive oral evaluation
D0330
Panoramic radiographic image
D8080
Comprehensive orthodontic treatment adolescent
D8090
Comprehensive orthodontic treatment, adolescent dentition
D9971
Odontoplasty, one to two teeth

LCD Codes

K07.3
Anomalies of tooth position

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Medical Disclaimer: This glossary is provided for educational and informational purposes only. Pearl is not a dental or medical provider and cannot offer medical advice, diagnosis, or treatment recommendations. Always consult a qualified dental professional for questions about your oral health.

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