The research paper presents the results of own research on desonorization in dyslalia regarding otological and audiological conditions of the well-being of children with impaired realization of voicing of obstruent phonemes. The research material comes from 30 subjects with desonorization between 4.7 and 17.8 years of age. During research it was found, basing on specialist medical examinations, that 80% of this group of the examined children had abnormalities in the tympanic membrane regarding its color, light reflex, position and translucency. The data obtained during impedance audiometry indicated that 53% of the subjects went through exudative otitis media and/or dysfunctions of the Eustachian tube. The data obtained during pure tone audiometry indicated that 53% of the examined children suffered from bilateral or unilateral conductive hearing loss. The conducted research shows that in the case of desonorative disorders, a laryngological-audiological examination and specialist treatment are an essential prerequisite for logopedic as well as therapeutic diagnostics.
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