" because we approach this to young children , it allows us to predicted what might be their next breakage history - the number of cavities that they ' ll get by , say , their late 20s or early 30s , " says specialist paul kyle . called the caries assess and hazard evaluation ( ai ) test , the test estimates the exact proportions in saliva of different types of sugar rings called oligosaccharides . the same sugar chains are located on tooth margins .
A test can predict cavities.