A diastema is a gap between teeth. It is often noticed between the two upper front teeth, but a gap can occur elsewhere in the mouth.
A gap between the upper front teeth may be mainly an aesthetic concern. Other gaps can trap food or be associated with missing teeth, gum disease or bite problems. A new or widening gap deserves assessment.
Here we explain common causes, treatment options and ways to protect oral health.
Possible causes
Several factors may contribute to spacing between teeth:
- Inherited characteristics.
- Tooth size and shape, or missing teeth.
- Tongue habits that apply pressure to the teeth.
- Inadequate oral hygiene contributing to gum disease.
- Gum inflammation requiring assessment.
- The position or attachment of the lip frenum.
- Periodontitis and loss of tooth support.
- Prolonged thumb sucking in childhood.
- Bite and alignment problems.
Treatment options
Treatment depends on the cause, oral health and the patient's preferences. A thorough assessment comes first, whether the concern is cosmetic or functional.
Direct composite bonding
Composite can close selected gaps or correct tooth shape. The dentist builds the material directly onto the tooth and hardens it with a curing light. Colour and contour are matched to the smile. Larger gaps may require orthodontics or another approach to avoid making the teeth excessively wide.
Ceramic veneers
Thin ceramic restorations can be bonded to the front of suitable teeth to change shape and close selected spaces. Preparation may involve removing some enamel. An impression or scan allows the technician to make the veneers, which are checked and bonded by the dentist.
Crowns
Crowns may be appropriate when teeth are substantially damaged or heavily restored. They cover the prepared tooth and can restore form and function. Ceramic or zirconia-based options can give a natural appearance, but crowns are generally more invasive than bonding or veneers.
Orthodontics
Braces or clear aligners move teeth to close spaces and improve alignment. Treatment duration depends on complexity, and retainers are normally needed afterwards to help maintain the result. Options may include metal braces, tooth-coloured brackets and clear aligners.
Dental implants
If a space is caused by a missing tooth, an implant-supported restoration may be one of the options after assessment.
Replacing a missing tooth can restore function and help manage the remaining space.
The best timing is individual. After tooth loss, neighbouring teeth may move and bone in the missing-tooth area may shrink. Discuss replacement promptly, but there is no universal one-year deadline. Some patients need preliminary treatment or bone grafting before an implant can be considered.
Frenum surgery
Where an abnormal frenum attachment contributes to the gap, a specialist may recommend a frenectomy as part of an overall plan. Timing is coordinated with orthodontic or restorative treatment; surgery alone does not necessarily close the gap.
Prevention
Not all gaps can or need to be prevented. Good brushing, interdental cleaning and regular examinations help protect the gums and detect disease-related tooth movement. Habits that affect tooth position can be discussed with your dentist.
These measures support long-term oral health, even where inherited spacing remains.
Managing a diastema requires an individual approach. The cause of the space and the condition of the teeth determine the appropriate options.
Timely assessment helps distinguish a harmless longstanding gap from a change that may signal an oral health problem.
If a gap between your teeth concerns you, contact our clinic for a personalised assessment and a discussion of realistic treatment options.
For details of the relevant treatment, see our page on direct composite veneers .
To help you compare treatment options, read types of dental veneers and comparing ceramic and composite veneers .