Authors: Clark CE, Schwarz IE, Blakeley RW
Title: The Removable R-Appliance as a Practice Device to Facilitate Correct Production of /r/
Source: American Journal of Speech Language Pathology 1993 2: 84-92
Year: 1993
Research Design: Randomised Controlled Trial
Rating Score: 05/10
This rating is confirmed
Eligibility specified - Y
Random allocation - Y
Concealed allocation - N
Baseline comparability - Y
Blind subjects - N
Blind therapists - N
Blind assessors - Y
Adequate follow-up - Y
Intention-to-treat analysis - N
Between-group comparisons - Y
Point estimates and variability - N

The remediation of /r/ articulation errors in school-age children often poses a challenge for speech-language pathologists. This study was designed to investigate whether an appliance placed in the maxillary arch would facilitate production of /r/, whether intervention with or without a direct auditory model and with or without the appliance would have a significant effect on treatment success, and whether the appliance would be a feasible treatment adjunct for speech-language pathologists who treat school-age children. Thirty-six school-age subjects were randomly assigned to one of four treatment groups. Each subject was seen individually for 15 minutes twice weekly for a period of 6 weeks. Results of the study indicated that the R-appliance was considered to be a useful clinical tool by the speech-language pathologists. Statistically significant differences in favor of the children who used the R-appliance, with either the treatment model, were noted at all levels of production - sound, word and spontaneous speech, the R-appliance combined with the direct auditory model treatment yielded significantly better results that the R-appliance combined with the non-auditory model.

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