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OCCURRENCE OF DEVELOPMENTAL MORPHOLOGICAL DEFECTS IN PERMANENT TEETH OF MENTALLY RETARDED CHILDREN
Author(s) -
PalinPalokas Tuija,
Alvesalo Lassi,
Hausen Hannu
Publication year - 1984
Publication title -
journal of intellectual disability research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.941
H-Index - 104
eISSN - 1365-2788
pISSN - 0964-2633
DOI - 10.1111/j.1365-2788.1984.tb01017.x
Subject(s) - mentally retarded , developmental disorder , intelligence quotient , psychology , permanent teeth , developmental age , crown (dentistry) , medicine , dentistry , developmental psychology , psychiatry , autism , cognition
A group of 9- to 11-year-old mentally retarded children (n = 92) and randomly selected healthy controls of the same age (n = 67) were psychologically tested for mental performance and examined for developmental morphological defects in their permanent teeth. About twice as many teeth with developmental defects in crown morphology were found in the retarded children as in healthy children. In retarded children, the frequency of defective dental crowns increased with the severity of mental retardation, as measured in terms of IQ. Owing to modifying factors that affect IQ, however, this trend can be questioned.