Society could save millions of crowns each year if more children were fitted with fixed braces. This is shown in unique studies performed by dentist and orthodontic specialist. Approximately ten percent of eight- and nine-year-olds in have so-called crossbite, Swedish research shows. This means that the children's upper and lower jaws are different in width and do not line up against each other when they bite their jaws together. If this problem is not corrected, the children can experience pain in the jaw, facial muscles, and jaw joints. Their face can also become asymmetrical.

Source: Orthodontics: Fixed braces best and cheapest, research suggests