title: Prevalence of odontogenic sinus tracts in 728 endodontically treated teeth.
abstract: OBJECTIVE
  The primary aim of this study was to assess the prevalence of sinus tracts in endodontically treated teeth in an Iranian population. The second aim was to seek and analyze the relationship between the clinically detected sinus tracts and factors such as sex, age, tooth type and location.
  
  
  METHODS
  A total of 728 patients' records and radiographs were reviewed of 427 females and 301 males for demographic data, preoperative pulpoperiapical status of treated teeth and the presence of sinus tract. Data were analyzed using chi-square test.
  
  
  RESULTS
  No significant differences were found for the prevalence of sinus tracts between two genders. Data showed that the highest prevalence of sinus tracts was in 10-19 year age group. Of 725 treated teeth, 107 teeth had sinus tracts (14.7%). Most odontogenic sinus tracts were associated with mandibular anterior teeth. Of 348 teeth with preoperative status of periapical inflammation and radiolucency, 107 teeth (30.75%) had an odontogenic sinus tract.
  
  
  CONCLUSIONS
  Data showed that almost one in seven teeth referred for root canal treatment had a sinus tract.
authors: Department of Endodontics, Dental School/Dental Research Center, Guilan University of Medical Sciences, Opp. Pardis Hotel, Rasht, Iran. Sadeghi_dds@yahoo.com
authors: Shiva
authors: S
authors: Sadeghi
authors: Mosa
authors: M
authors: Dibaei
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D003751:Dental Fistula / Q000453:epidemiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D012189:Retrospective Studies; D012390:Root Canal Therapy; D055815:Young Adult