title: The effect of inlay butterfly cartilage tympanoplasty technique on compliance.
abstract: CONCLUSIONS
  IBCT technique should be preferred owing to its high graft survival rate and ABG gain. While no significant difference was found in middle ear pressures between ears that underwent IBCT and normal ears, compliance values were found to be decreased in patients undergoing IBCT. However, the lack of correlation between ABG gain and compliance values indicated that compliance increase had no effect on post-operative ABG results.
  
  
  OBJECTIVE
  The aim of the present study was to compare tympanometric and audiological parameters in patients undergoing inlay butterfly cartilage tympanoplasty (IBCT) with their normal ears and to determine their difference with normal ear tympanometric parameters.
  
  
  METHODS
  Overall, 25 patients that underwent an operation between August 2010-May 2014 were included in the present study. In 13 of these patients, the ear that did not undergo operation was normal. 0.5, 1, 2, 4 kHz pure sound average values, tympanometric measurements and compliance values of normal and operated ears were compared.
  
  
  RESULTS
  The graft survival rate in patients was found to be 92%. Mean pre-operative air-bone gap (ABG) was 16.4 ± 5.4 in patients, while mean post-operative ABG was 10.9 ± 5.8, with a statistically significant difference (p = 0.001) While there was no significant difference between operated and normal ears of patients in terms of middle ear pressure (0.441), compliance values were significantly higher in normal ears than those in operated ears (0.032). When post-operative ABG gain was compared with compliance values, no significant correlation was found between ABG gain and compliance measurements (r = -0.025 and p = 0.936).
authors.affiliation: a Department of Otorhinolaryngology , Ministry of Health Ataturk Training and Research Hospital , Ankara , Turkey ;
authors.forename: Elif
authors.initials: E
authors.lastname: Ersoy Callioglu
authors.affiliation: a Department of Otorhinolaryngology , Ministry of Health Ataturk Training and Research Hospital , Ankara , Turkey ;
authors.forename: Arzu
authors.initials: A
authors.lastname: Tuzuner
authors.affiliation: a Department of Otorhinolaryngology , Ministry of Health Ataturk Training and Research Hospital , Ankara , Turkey ;
authors.forename: Sule
authors.initials: S
authors.lastname: Demirci
authors.affiliation: b Department of Otorhinolaryngology , Yildirim Beyazit University Faculty of Medicine , Ankara , Turkey.
authors.forename: A Sami
authors.initials: AS
authors.lastname: Bercin
authors.affiliation: a Department of Otorhinolaryngology , Ministry of Health Ataturk Training and Research Hospital , Ankara , Turkey ;
authors.forename: Tolga
authors.initials: T
authors.lastname: Oguzhan
authors.affiliation: b Department of Otorhinolaryngology , Yildirim Beyazit University Faculty of Medicine , Ankara , Turkey.
authors.forename: Mehmet Hakan
authors.initials: MH
authors.lastname: Korkmaz
mesh_terms: D000158:Acoustic Impedance Tests; D000328:Adult; D001299:Audiometry; D002356:Cartilage / Q000601:surgery; D003187:Compliance; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D014433:Tympanoplasty / Q000379:methods*; D055815:Young Adult
keywords: Compliance; inlay butterfly cartilage tympanoplasty; middle ear pressure; tympanogram