Our dentist recommended this kind of thing for our 9 year old son, who had sucked his thumb since infancy. It was effecting his teeth. Our son was ready for the change and THAT is a big part of it. HE wanted to stop. He only sucked his thumbs at night and didn't know how to stop. He chose the color and was excited when they arrived. They worked like a charm. We bought him legos as a reward at the end of idk 60 days. He's almost 11 now and hasn't even used the thumb guards for over a year. These costed way less than future braces. Although he may need braces anyway. At least his teeth won't be as bad as they could have been. I definitely recommend this product. The greatest thing they gave my son was an increased sense of self confidence.