The accumulated posteruptive tooth age was calculated for 212 children with Down's syndrome and 124 of their unaffected sibs. Posteruptive tooth age was shown to vary widely with different morphological permanent tooth types at the same chronological age. Girls in both groups had greater accumulated posteruptive tooth age than boys at each age. Sibs of both sexes generally exceeded the exposure experience of the children with Down's syndrome.
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References
1.
Cohen, M.M., and Winer, R.A.: Dental and Facial Characteristics in Down's Syndrome (Mongolism) , J Dent Res44: 197-208, 1965.
2.
Johnson, N.P. ; Young, M.A.; and Gallios, J.A.: Dental Caries Experience of Mongoloid Children , J Dent Child27:292-294, 1960.
Swallow, J.N. : Dental Disease in Children with Down's Syndrome , J Ment Defic Res8: 102-118, 1964.
5.
Carlos, J.P. , and Gittelsohn, A.M.: Longitudinal Studies of the Natural History of Caries. I. Eruption Patterns of the Permanent Teeth, J Dent Res44: 509-516, 1965.
6.
Carlos, J.P., and Gittelsohn, A.M. : Longitudinal Studies of the Natural History of Caries. II. A Life-Table Study of Caries Incidence in the Permanent Teeth , Arch Oral Biol10: 739-751, 1965.
7.
Klein, H.; Palmer, C.E.; and Kramer, M.: Studies on Dental Caries. II. The Use of the Normal Probability Curve for Expressing the Age Distribution of Eruption of the Permanent Teeth, Growth1: 385-394, 1937.
8.
Palmer, C.E.; Klein, H.; and Kramer, M.: Studies on Dental Caries. III. A Method of Determining Post-Eruptive Tooth Age, Growth2: 149-158, 1938.
9.
Orner, G.: Congenitally Absent Permanent Teeth among Mongols and Their Sibs, J Ment Defic Res12: 292-302, 1971.
10.
Orner, G.: Eruption of the Permanent Teeth in Mongoloid Children and Their Sibs, J Dent Res52: 1202-1208, 1973.
11.
Pearson, E.S., and Hartley, H.O. (eds) : Biometrika Tables for Statisticians, Vol 1, 3rd ed, Cambridge: University Press, 1966 .
