The authors examined 113 subjects between the ages of 9 and i 4 years, 59 males and 54 females, in the town of Santa Maria, state of Rio Grande do Sul, Brazil. Dental/ orthodontic assessment revealed that 12 had normal occlusion, and 66 had Class I, 18 had Class II division 1, 7 had Class II division 2, and 10 had Class Ill malocclusions. For the analysis of the speech articulatory disorders, the Yavas, Hernadorena & Lamprecht (1992) adapted test was used. A list of words was selected that had all phonemes of the Portuguese language, in all possible positions in the words. A tape recording was utilized for later analysis of the speech sample and a phonetic transcription of the words was done. Results indicated that the 12 subjects with normal occlusion did not have speech-articulatory disorders; however, there were correlations between malocclusion and articulatory problems. Twenty of the; 13 subjects (17.7%) were identified as having malocclusion and articulatory disorders. This study attempted to define possible relationships between malocclusion and fonoarticulatory disorders.
Farret, M. M., et al. (1998). Relationship between malocclusion and fonoarticulatory disorders, International Journal of Orofacial Myology, 24 (1), 20-26.