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Acoustical analysis and perceptual ratings of voice before and after surgery for implantation of pre-fascia temporal muscle

PURPOSE: to analyze the impact of pre-fascia temporal muscle implantation in vocal fold for sulcus vocalis, using perceptual ratings, acoustical analysis and spectrograms analysis. METHODS: it is a retrospective study. We reviewed the records of the nine patients who underwent pre-fascia temporal muscle implantation for sulcus vocalis. Perceptual voice ratings [Grade, Roughness, Breathiness, Asthenia, and Strain (GRBAS)], acoustical analysis and spectrogram analysis were analyzed. Perceptual voice ratings was carried out by three speech-language pathologists and spectrograms analysis by three speech language pathology students after three hours of training. RESULTS: perceptual ratings (GRBAS): Statistically significant improvement was found just in parameter B (Breathiness) t>1.734. Analysis acoustical: The fundamental frequency decreased and the maximum phonation time increased after surgery. Spectrogram analysis: Harmonic form and periodicity remained without improvement after treatment. The noise of spectrogram decreased and harmonic definition increased after treatment. CONCLUSION: the patients who underwent pre-fascia temporal muscle implantation for sulcus vocalis showed improvement in perceptual rating of Breathiness (B), fundamental frequency, maximum phonation time and spectrograms analysis (noise decreased and harmonic definition increased).

Larynx; Voice; Voice Disorders; Transplantation, Autologous


ABRAMO Associação Brasileira de Motricidade Orofacial Rua Uruguaiana, 516, Cep 13026-001 Campinas SP Brasil, Tel.: +55 19 3254-0342 - São Paulo - SP - Brazil
E-mail: revistacefac@cefac.br