The key to correcting a diastema lies in understanding these contributing factors. The midline diastema is a space between the upper middle incisors. This space is a common finding in children, and is part of normal dental development. Diastemas occur in about 50 percent of children between the ages of 6 and 8. Diastemas occur less frequently as children get older, because most of the spaces close naturally.
Diastemas are a normal part of dental growth and development in children.
It is only later, around the age of 12, that the upper eye teeth erupt into the mouth, and help the diastemas between the incisors close naturally. Small lateral incisor teeth. A deep bite. This is a situation in which the front teeth experience an excessive vertical overlap. Such a deep bite forces the upper teeth to tip out, causing the formation of spaces between them.