If your child has a cavity, a filling may be the best way to ensure that the damage doesn’t get any worse. At PPS Kids, we use aesthetically pleasing, tooth-colored plastic called composite fillings to repair the surfaces of teeth. Not old-fashioned silver fillings. Not only are these better looking, they’re also better for your child since they don’t contain mercury and you don’t have to remove as much tooth structure to hold the composite filling in place.