title: Ceravital reconstruction of canal wall down mastoidectomy: long-term results.
abstract: OBJECTIVE
  To describe long-term outcomes of external auditory canal wall reconstruction using bioactive glass ceramic (Ceravital) after canal wall down mastoidectomy.
  
  
  METHODS
  Retrospective review of a case series over a 21-year period, with a mean +/- SD follow-up of 13.1 +/- 6.7 years (range, 0.2-20.5 years).
  
  
  METHODS
  Private otologic practice.
  
  
  METHODS
  The study population comprised 20 consecutive patients aged 12 to 60 years, who had previously undergone canal wall down mastoidectomy.
  
  
  METHODS
  Reconstruction of the canal wall with bioactive glass ceramic.
  
  
  METHODS
  Incidence, cause, and timing of reconstruction failure; need for additional surgery; change in hearing; frequency of outpatient visits; and incidence of surgical complications.
  
  
  RESULTS
  Prosthetic walls have remained intact in 16 patients followed for more than 5 years. One had remained intact at 3 months after surgery, but the patient was lost to follow-up. Prosthesis removal was required in 3 patients (because of infection, displacement, and cholesteatoma in 1 patient each). The only perioperative complications were otorrhea in 4 patients and a 5-dB sensorineural hearing loss in 1 patient. Of the 16 intact patients with long-term follow-up, 4 required no further surgery, while 11 underwent an average of 2 subsequent middle ear procedures each (range, 1-3), including 4 planned reexplorations. The mean +/- SD air bone gap improved 11 +/- 16 dB as of the most recent audiogram (mean +/- SD, 7.7 +/- 5.8 years after operation).
  
  
  CONCLUSIONS
  Canal wall reconstruction using bioactive glass ceramic is a useful option for patients who desire freedom from the frequent mastoid bowl debridements and activity restrictions that may result from canal wall down mastoidectomy.
authors.affiliation: Department of Otolaryngology-Head & Neck Surgery, Johns Hopkins School of Medicine, Baltimore, MD, USA.
authors.forename: Charles C
authors.initials: CC
authors.lastname: Della Santina
authors.forename: Su Cherl
authors.initials: SC
authors.lastname: Lee
mesh_terms: D000328:Adult; D001672:Biocompatible Materials; D002516:Ceramics / Q000627:therapeutic use*; D002648:Child; D004424:Ear Canal / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008416:Mastoid / Q000601:surgery*; D008875:Middle Aged; D013506:Otologic Surgical Procedures / Q000379:methods*; D019651:Plastic Surgery Procedures / Q000379:methods*; D012189:Retrospective Studies; D016896:Treatment Outcome
chemical_list: D001672:Biocompatible Materials; C031323:bio-vitroceramic AP40