Vocal quality characteristics in children with cleft palate: a multiparameter approach.
ABSTRACT The main purpose of the present study was to examine the vocal quality and to investigate the effects of gender on vocal quality in 28 children with a unilateral or bilateral cleft palate. In this study, the vocal quality was determined using videolaryngostroboscopic and perceptual evaluations, aerodynamic, voice range, acoustic, and dysphonia severity index (DSI) measurements. The DSI is based on the weighted combination of four voice measurements and ranges from +5 to -5 for, respectively, normal and severely dysphonic voices. Additional objectives were to compare the vocal quality characteristics of children with cleft palate with the available normative data and to investigate the impact of the cleft type on vocal quality. Gender-related vocal quality differences were found. The male cleft palate children showed an overall vocal quality of +0.62 with the presence of a perceptual slight grade of hoarseness and roughness. The female vocal quality had a DSI value of +2.4 reflecting a perceptually normal voice. Irrespective of the type of cleft, all subjects demonstrated a significantly lower DSI-value in comparison with the available normative data. The results of the present study have provided valuable insights into the vocal quality characteristics of cleft palate children.
- The Laryngoscope 12/1973; 83(11):1745-53. · 1.98 Impact Factor
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ABSTRACT: Written to supplant the first edition published in 1971, this volume embodies such dramatic changes that a new title might have been in order. Dr Bzoch proposes this book for those studying in graduate programs in communicative disorders. It assumes a good background in normal and pathological language as well as the anatomy and physiology of the speech mechanism. The authors cite recent references and present the viewpoint of other members involved in management of persons with cleft lip and palate. This exposure to the writing of specialists can only enrich the speech and language therapist's background. Most conspicuously absent, however, is a contribution by a plastic surgeon. The text is well organized under headings dealing with the general, diagnostic, and habilitative aspects of communication disorders. The chapters are short and lucid. Bzoch's drollery and wit characterize the sections he has written.The segment on anatomy and physiology is briefJAMA The Journal of the American Medical Association 01/1980; 243(24):2528-2528. · 29.98 Impact Factor
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ABSTRACT: The purpose of this study was to evaluate the outcome regarding speech intelligibility, articulation, nasalance, nasality and voice in adult cleft palate patients. An additional objective of this study was to delineate the impact of a unilateral versus bilateral cleft lip and palate on speech outcome and to compare the nasalance and nasality patterns of cleft palate adults with data from non-cleft subjects. Objective (nasalance values obtained by the Nasometer, mirror-fogging test according to Glatzel and the determination of the dysphonia severity index, DSI) and subjective assessment techniques (perceptual evaluation of speech, nasality and voice, the Bzoch tests and the Gutzmann test) were used. All 14 subjects with a complete unilateral or bilateral cleft lip and palate consulted the same craniofacial team, followed an identical surgical protocol, completed the surgical cleft palate treatments and followed speech therapy. Most of the patients had a fairly satisfactory outcome with normal speech intelligibility, but three types of articulation errors seemed to predominate. More than one half of the subjects demonstrated hypernasality. In comparison with the non-cleft normative data, statistically higher nasalance values were obtained in the cleft group. The subjects had a DSI score that corresponds with a normal or slightly impaired voice quality. No significant differences regarding speech outcome were found between subjects with a unilateral or bilateral cleft lip and palate. The results provide important information for speech-language pathologists to evaluate and improve speech outcome in cleft palate patients.Folia Phoniatrica et Logopaedica 01/2003; 55(2):80-90. · 1.08 Impact Factor