Gapped Teeth (Diastema)

In children, the width of a midline gap can change with eruption. It commonly reduces as the dentition develops, although a gap may remain when its width or another associated feature keeps it open.

In children below 12, commonly reported causes include the shape of the upper lip frenum, an extra tooth in front of the upper jaw, and the pattern of nasal airflow condensation. A gap can also be part of normal mixed-dentition development.

No. A midline gap is often seen during mixed dentition and disappears naturally in most children as their teeth develop. Timing is considered alongside the stage of primary, mixed, adolescent, or adult dentition.

In a follow-up of treated patients, a larger gap before treatment and having a family member with a similar gap were significant predictors of relapse. A reopened space, repeat treatment, or continued retainer use were counted as relapse in that study.

Assessment can use a clinical examination and dental records. Studies of childhood midline diastema have also used panoramic radiographs or CBCT images when looking for an impacted extra tooth, while visual examination and a dental aesthetic index have also been used.

Treatment timing follows the diagnostic summary and the stage of dentition. Early identification of an abnormality can help establish priorities and timing, while concerns such as extra teeth, eruption problems, and bite discrepancies have different management needs.

The scope of care starts with the diagnostic records, the stage of dentition, and the reason the gap has persisted. An extra tooth, an eruption concern, or a simple developing gap do not call for the same clinical plan.

Yes. In one follow-up study 4 to 9 years after active orthodontic treatment, 49% of patients met the study definition of relapse, which included a measurable reopened space, further treatment, or continued retainer use.

Keep existing teeth clean and protected while the dentition is developing. Prevention plans for tooth-development concerns include oral hygiene, diet advice, fluoride varnish twice a year, fissure sealants, and a mouth guard to reduce dental trauma where appropriate.