title: Prelingual deafness: Benefits from cochlear implants versus conventional hearing aids.
abstract: BACKGROUND
  The majority of patients with hearing loss, including those with severe hearing loss, benefits from the use of hearing aids. The cochlear implant is believed to achieve better results in a child with hearing loss in cases where the severity of disability renders hearing aids incapable of providing adequate sound information, as they require sufficient cochlear reserve so that acoustic detention occurs.
  
  
  OBJECTIVE
  To assess if cochlear implants provide more benefit than conventional hearing aids in prelingually deaf patients.
  
  
  RESULTS
  The study was a systematic review of scientific papers selected by a search of the SciELO, Cochrane, MEDLINE, and LILACS-BIREME databases. Among the 2169 articles found, 12 studies proved relevant to the issue and presented an evidence strength rating of B. No publications rated evidence strength A. Seven of the studies analyzed were prospective cohorts and 5 were cross-sectional studies.
  
  
  CONCLUSIONS
  Based on several studies, cochlear implants were demonstrated to be the best current alternative for bilateral severe or profound hearing loss, achieving better results in speech perception and development in prelingual children when compared to conventional hearing aids.
authors.affiliation: Neurotology Fellow - Department of Otolaryngology, University of São Paulo School of Medicine, São Paulo, Brazil.
authors.forename: Aline Gomes
authors.initials: AG
authors.lastname: Bittencourt
authors.affiliation: Neurotology Fellow - Department of Otolaryngology, University of São Paulo School of Medicine, São Paulo, Brazil.
authors.forename: Ana Adelina Giantomassi Della
authors.initials: AA
authors.lastname: Torre
authors.affiliation: Professor and Chairman - Department of Otolaryngology, University of São Paulo School of Medicine, São Paulo, Brazil.
authors.forename: Ricardo Ferreira
authors.initials: RF
authors.lastname: Bento
authors.affiliation: Associate Doctor - Department of Otolaryngology, University of São Paulo School of Medicine, São Paulo, Brazil.
authors.forename: Robinson Koji
authors.initials: RK
authors.lastname: Tsuji
authors.affiliation: Associate Professor - Department of Otolaryngology, University of São Paulo School of Medicine, São Paulo, Brazil.
authors.forename: Rubens de
authors.initials: Rd
authors.lastname: Brito
keywords: cochlear implants; deafness; hearing aids; hearing loss; sensorineural