International Workshop on Models and Analysis of Vocal Emissions for Biomedical Applications (MAVEBA 1999)

Florence, Italy
September 1-3, 1999

Higher Prevalence of Voice Disorders in Patients with Cleft Lip and Palate? Results from Two Studies

Tim Bressmann (1), Robert Sader (1), Wolfram Ziegler (2), Shaheen Awan (3), Michael Merk (4), Hans-Florian Zeilhofer (1), Hans-Henning Horch (1)

(1) Department of Oral and Maxillofacial Surgery, University of Technology, Munich, Germany (2) Clinical Neuropsychology Research Group, Municipal Hospital Bogenhausen, Munich, Germany (3) Department of Speech Pathology and Audiology, Bloomsburg University, Bloomsburg PA, USA (4) Institute of Communication Engineering, Federal Armed Forces University, Munich, Germany

This paper addresses two questions about voice disorders in patients with cleft lip and palate (CLP): 1. What is the actual prevalence of voice disorders in CLP and is this prevalence higher than in the non-cleft population? 2. Is there an interaction between hypernasality and phonatory dysfunction which can be assessed in terms of signal perturbation quotients? In the first study, 154 CLP patients were examined perceptually and with the MODIAS software. Severe voice disorders were found in 6.5% of the CLP group which is numerically only slightly higher than in the normal population. None of the pertubation quotients differentiated between modal and disordered voices. In the second study, 22 hypernasal and 20 non-hypernasal CLP patients were compared to 14 tumor patients using the EZVoice software. The perturbation measures differentiated dysphonic patients from patients with normal voices. An effect of hypernasality on the signal perturbation could not be verified.

Full Paper

Bibliographic reference.  Bressmann, Tim / Sader, Robert / Ziegler, Wolfram / Awan, Shaheen / Merk, Michael / Zeilhofer, Hans-Florian / Horch, Hans-Henning (1999): "Higher prevalence of voice disorders in patients with cleft lip and palate? results from two studies", In MAVEBA-1999, 122-127.