title: A retrospective study of the hearing results obtained after stapedotomy by the implantation of two Teflon pistons with a different diameter.
abstract: This study reports the evaluation of hearing results after implantation of a Teflon piston of a different diameter in cases of otosclerosis requiring stapedotomy. By random selection, a Teflon piston with a shaft diameter of 0.3 mm was inserted in 34 cases and a piston with a shaft diameter of 0.4 mm in 26 cases. A retrospective analysis of the pre- and postsurgery audiological results of these two patient groups was carried out by microcomputer. A repeated statistical measures analysis of variance was used to test and estimate the air-conduction frequency-specific differences between the two prostheses with respect to changes in pre- and postoperative healing. The results of this comparative study of the two Teflon pistons with different diameters indicate statistically a greater hearing gain for the 0.4-mm prosthesis, especially in the lower frequencies.
authors.affiliation: Department of Otorhinolaryngology, Academic Medical Center, University of Amsterdam, The Netherlands.
authors.forename: W
authors.initials: W
authors.lastname: Grolman
authors.forename: R A
authors.initials: RA
authors.lastname: Tange
authors.forename: A J
authors.initials: AJ
authors.lastname: de Bruijn
authors.forename: A A
authors.initials: AA
authors.lastname: Hart
authors.forename: P F
authors.initials: PF
authors.lastname: Schouwenburg
mesh_terms: D000328:Adult; D001299:Audiometry; D001307:Auditory Perception / Q000502:physiology*; D006801:Humans; D008875:Middle Aged; D019933:Ossicular Replacement; D010040:Otosclerosis / Q000601:surgery*; D011138:Polytetrafluoroethylene; D012189:Retrospective Studies; D013201:Stapes Surgery; D016896:Treatment Outcome
chemical_list: D011138:Polytetrafluoroethylene