What Causes Gaps in Teeth
A diastema is a space or gap between two teeth. It appears most often between the two upper front teeth. However, gaps can occur between any two teeth. A mismatch between the size of the jaw bones and the size of the teeth can cause either extra space between teeth or crowding of teeth.
A diastema (plural diastemata) is a space or gap between two teeth. Many species of mammals have diastemata as a normal feature, most commonly between the incisors and molars.