WHY DOES CROSSING OCCUR?

Diastemas can occur when one has large jaws and small teeth, therefore a scattered display of teeth in a smile. 

WHAT IS THE AESTHETIC TREATMENT OF DIASTEMAS?

The spaces between the teeth (diastemas) can be closed with

Orthodontic treatment,

Composit fillings and

Porcelain laminate veneers.

After either treatment, diastemas usually don't repeat themselves.