The term diastema is used to describe a gap or open space between the upper incisors. A diastema may be caused by an unequal relationship between the size of the jaw and teeth. The pulling action of the tissue around the lip (labial fraenum) can push the teeth apart creating a diastema.

Diastemas are usually closed with the use of braces to move the teeth together. After the active treatment a retainer is required to hold the teeth in their new position while gum tissue stabilises.

Orthodontists may suggest a fraenectomy, ie. removing the fraenum from between the upper incisors to create some scar tissue to minimise the chance of the space reopening after the orthodontic therapy.