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Perceptual evaluation of changes in sound quality after surgically changing the shape of the osseous external auditory canal.

Primary Objective: The present study is designed to answer the question whether the surgically altered OEAC leads to a perceived change in sound quality.Secondary Objective(s): To determine the differences in RECD and REUR induced by different OEAC…

The Baha Microbiome Case Control Study - A Molecular Bacterial Profile Of The Baha

The primary objective of the study is to identify the bacterial flora on the abutment in a phylum/species classification. The secondary objectives are to assess the relationships between the commensal skin flora and the flora on the abutment and to…

Prevalence of excessive cerumen in adults with an intellectual disability

By this study we*d like to determine the prevalence of excessive cerumen in people with an intellectual disability. Besides we*d like to study whether there is an correlation to sexe, age, type of residence, degree of intellectual disability,…

Perceptual evaluation of changes in sound quality after mastoidectomy: open cavity mastoid versus obliterated mastoid cavity.

The primary objective of this study is to answer the question whether the obliteration of an open cavity mastoid restores the subjective sound quality as perceived in the particular ear. The secondary objective is to determine the differences in…