A diastema is a space between the front teeth, diastemas are closed by Direct Veneers, Indirect Veneers & Orthodontic alignment of the teeth into contact. Orthodontic treatment uses brackets and wires to place pressure on the teeth and gradually realign them into a more desirable position. After the braces and wires are removed the person must wear a plastic retainer for several months to hold his or her new smile in place.