Patients admitted for the otosclerosis operation are included in the study. The Narrow Band Imaging (NBI) of their taste buds is performed before the operation. The sensory function of the anterior 2/3 of the tongue is tested with the two point discrimination discs, the taste is tested with taste strips and the SF-36 questionnaire is applied. During the operation in local anesthesia the threshold for the tongue sensation (by the stimulation of the chorda tympani nerve) of the first 2/3 of the tongue at the beginning of the operation (when we first encounter the chorda tympani nerve) and at the end of the operation is measured.One month and six months after the operation the tests are being repeated (NBI, two-point discrimination and SF-36 questionnaire). The study has the National Ethical Committee approval.
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The change of the count of the taste buds after stapes surgery mesured by NBI
Timeframe: 2 years
The change of the structure -blood vessel morphology of the taste buds after stapes surgery mesured by NBI
Timeframe: 2 years
The change of the function of the taste buds mesured by the test strips
Timeframe: 2 years
The influence of the chorda tympani intraoperative manipulation on the patients quality of life
Timeframe: 2 years
The change of the function of the chorda tympani nerve measured by the change of tongue sensitivity measured by two point discrimination test
Timeframe: 2 years