" so we apply this to young children , it gives us to guess when will be their current age-related history - the number of nests that they ' ll know by , means , their young 20s or the 30s , " adds researcher john dennis . called the decay identification and cost evaluation ( care ) test , the experiment determines the relative proportions in saliva of different types of sugar chains called oligosaccharides . the same light chains are presented on tooth margins .
A test can predict cavities.