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Annual probability of caries attack (100 Qx) of the permanent teeth, female children, Kingston, New York. Semi-logarithmic scale. Probabilities are slightly lower in male children. I1: central incisor, I2: lateral incisor, C: canine, B1: 1st bicuspid, B2: 2nd bicuspid, M1: 1st molar, M2: 2nd molar. From Carlos JP, Gittelsohn AM. Longitudinal studies of the natural history of caries—II. Arch Oral Biol. 1965;10(5):739–751; with permission.
