Abstract
The development of articulation in the speech of children aged 3–9 years and wearing full upper dentures was compared with that of children having natural teeth. Each group contained 20 children matched by sex, age and social class. Articulation testing using the Edinburgh Articulation Test was carried out at three stages: when the experimental group was edentulous, on insertion of the denture and 2–3 months after insertion. Tests of auditory discrimination, vocabulary and intelligence were also carried out. The average raw scores of the experimental group for the first and third tests were lower than those of the control group. Ninety per cent of the experimental group had their lowest score in the second articulation test. Variation from the adult form of phonetic features for the experimental group occurred in both immature phonetic realizations and atypical phonetic realizations. No such variations occurred in the control group other than the normal immature features spoken by the younger patients.
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