" when we applied this to young children , it allowing us to know what might be their likely age-related history - the number of tooth that they ' ll getting by , say , their middle 20s or early 30s , " adds study marc denny . called the caries assessment and risk examination ( care ) test , the test measuring the relative numbers in hair of different kind of sugar compounds called oligosaccharides . the same sugar chains are identified on the enamel .
A test can predict cavities.