Occurrence of Dental Consonant Misarticulations in Different Cleft TypesLaitinen J. · Haapanen M.L. · Paaso M. · Pulkkinen J. · Heliövaara A. · Ranta R.
Cleft Centre, Department of Plastic Surgery, Helsinki University Central Hospital, Helsinki, Finland
To study the occurrence and type of misarticulations in dental consonants /r/, /s/ and /l/ 280 (115 girls, 165 boys) 6-year-old cleft children were examined by 1 of the 2 experienced speech pathologists of the cleft team. The patients included 82 children with isolated cleft palate (CP), 82 with cleft lip with (34) or without (48) cleft alveolus [CL(A)], 85 with unilateral cleft lip and palate (UCLP) and 31 with bilateral cleft lip and palate (BCLP). CP children were first divided into subgroups; there were 17 children with soft palate cleft, 49 with partial and 16 with complete hard palate cleft. All patients were native Finnish speakers, and had normal hearing, no known syndrome or associated anomalies possibly affecting speech or psychomotor retardation. The results showed that the occurrence and severity as well as the number of errors of all studied sounds separately or grouped increased with the severity of the cleft being constantly greatest in the BCLP group and lowest in the CL(A) group. Altogether 44% of the patients misarticulated at least one studied sound; 41% distorted and 5% substituted, and 2% both distorted and substituted. The /r/ sound was misarticulated by 36%, the /s/ sound by 23%, and the /l/ sound by 18% of the patients. Boys tend to have more problems in producing the studied sounds correctly.
Jaana Laitinen, DDS
Matkamiehentie 10 A 13
FIN–00320 Helsinki (Finland)
Tel. +358 9 471 7657, Fax +358 9 471 7654
Number of Print Pages : 9
Number of Figures : 1, Number of Tables : 5, Number of References : 24
Folia Phoniatrica et Logopaedica (International Journal of Phoniatrics, Speech Therapy and Communication Pathology)
Founded in 1947 by R. Luchsinger, M. Seeman and J. Tarneaud
Official Organ of the International Association of Logopedics and Phoniatrics (IALP)
Vol. 50, No. 2, Year 1998 (Cover Date: March-April 1998)
Journal Editor: S. Fex, Lund
ISSN: 1021–7762 (print), 1421–9972 (Online)
For additional information: http://www.karger.com/journals/fpl