Objective Evaluation of the Prosthesis Diameter on Hearing Results after Stapedotomy

Objective: To evaluate objectively the Teflon piston diameters on hearing results in otosclerosis patients undergone stapedotomy. Materials and Methods: The diameters of prostheses used were 0.3 mm and 0.6 mm in two groups of ten patients. and 10 healthy patients as control group were included. Transient evoked otoacoustic emissions (TEOAE), Distortion product otoacoustic emissions (DPOAE) and DPOAE I/O functions were recorded. Results: Significant changes were detected at 2000-3000 Hz (p<0.001) and 4000-6000 Hz (p<0.05) for 0.6 mm prostheses in TEOAE statistically. Also 3000-4000 Hz for 0.6 mm prostheses (p<0.05) for DPOAE and with 65 dB at 2000 Hz (p<0.05), with 60 dB and 45 dB at 3000 Hz (p<0.05) for DPOAE I/O were found statictically. Conclusions: OAE measurements are advisable for follow-up examinations in otosclerosis patients with stapedotomy. An increase in prosthesis diameter for stapedotomy gives better hearing results, not only at lower frequencies, but also at higher.