" when we administer this to young children , it allows us to prediction that possibility be their future dental history - the number of membranes that they ' ll get by , say , their late 20s or early 30s , " says researcher paul kyle . called the cavities classification and risk evaluation ( cost ) test , the test measures the relative proportions in saliva of different types of sugar polymers called oligosaccharides . the same sugar chains are visible on tooth surfaces .
A test can predict cavities.