Fortunately, there is a good solution to this problem: dental sealants.
Dental sealants are invisible plastic resin coatings that smooth out the chewing surfaces of the back teeth, making them resistant to decay. A sealed tooth is far less likely to develop a cavity, which can require more expensive dental treatment later, and most importantly, cause your child pain.
“Sealants on permanent molars reduce the risk of cavities by 80%.”
–Journal of the American Dental Association