title: The maxillary sinus and its endodontic implications: clinical study and review.
abstract: OBJECTIVE
  Endodontic infections of posterior maxillary teeth sometimes spread to the maxillary sinus, generating severe complications. The aim of this study is to present the various problems encountered during endodontic treatment of these teeth.
  
  
  METHODS
  The files of 125 cases of odontogenic chronic maxillary sinusitis were reviewed retrospectively.
  
  
  RESULTS
  Chronic apical periodontitis was the cause in 99 cases and traumatising endodontic treatment in 26 cases. Foreign intra-sinusal bodies were occasionally seen as a consequence of different endodontic treatments of posterior maxillary teeth.
  
  
  CONCLUSIONS
  A knowledge of dento-antral relationships is particularly important in the prevention of sinusal accidents and complications during various therapeutic manoeuvres, which should be performed according to and depending on the regional morphology.
authors.affiliation: Oral Rehabilitation Department, Faculty of Dentistry, Carol Davila University of Medicine and Pharmacy, 5 Calea Plevnei, Sector 5, Bucharest, Romania.
authors.forename: V R
authors.initials: VR
authors.lastname: Nimigean
authors.forename: V
authors.initials: V
authors.lastname: Nimigean
authors.forename: N
authors.initials: N
authors.lastname: Maru
authors.forename: D
authors.initials: D
authors.lastname: Andressakis
authors.forename: D G
authors.initials: DG
authors.lastname: Balatsouras
authors.forename: V
authors.initials: V
authors.lastname: Danielidis
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002908:Chronic Disease; D005260:Female; D005547:Foreign Bodies / Q000150:complications* / Q000601:surgery; D006801:Humans; D008297:Male; D015523:Maxillary Sinusitis / Q000209:etiology* / Q000382:microbiology / Q000601:surgery; D008499:Medical Records; D008875:Middle Aged; D010485:Periapical Periodontitis / Q000150:complications* / Q000601:surgery; D012189:Retrospective Studies; D012390:Root Canal Therapy / Q000009:adverse effects*; D016896:Treatment Outcome