title: Effects of different blood groups on the reproduction of periodontal pocket bacteria.
abstract: BACKGROUND
  Many studies have been conducted proving the relation between different blood groups and certain diseases. It was claimed in these studies that H pylori showed different distribution according to different blood groups. In dentistry, the relation between blood groups and dental diseases was investigated in a limited number of studies and it was concluded that there might be a relation between them. The aim of the present study was to determine whether the bacteria isolated from the periodontal pockets of individuals with periodontal diseases indicated differences in CFU amounts to form colonies in different ABO blood groups.
  
  
  METHODS
  Bacterial samples obtained from the individuals with periodontal diseases from the worst affect sites were inoculated into culture media formed by blood taken from 32 individuals who were systemically and periodontally healthy and who had different blood groups. The colony numbers of these bacteria were observed.
  
  
  RESULTS
  Although periodontal pocket bacteria formed colonies in different numbers in different ABO blood groups (p < 0.05), no statistically significant difference was determined in the reproduction of these bacteria in different Rh blood groups and different sexes (p > 0.05).
  
  
  CONCLUSIONS
  Different ABO blood groups may show differences in significant rates in the colonisation numbers of the bacteria that are the main cause of periodontal diseases.
authors.affiliation: Atatürk Universitesi Diş Hekimliği Fakültesi, Periodontoloji Anabilim Dali 25240, Erzurum, Turkey. turgdemir@hotmail.com
authors.forename: Turgut
authors.initials: T
authors.lastname: Demir
authors.forename: Hakan
authors.initials: H
authors.lastname: Uslu
authors.forename: Recep
authors.initials: R
authors.lastname: Orbak
authors.forename: Ulkü
authors.initials: U
authors.lastname: Altoparlak
authors.forename: Ahmet
authors.initials: A
authors.lastname: Ayyildiz
mesh_terms: D000017:ABO Blood-Group System / Q000276:immunology*; D000328:Adult; D001421:Bacteria, Anaerobic / Q000254:growth & development; D015169:Colony Count, Microbial; D005260:Female; D006801:Humans; D008297:Male; D010514:Periodontal Pocket / Q000097:blood / Q000382:microbiology*; D010518:Periodontitis / Q000097:blood / Q000276:immunology*; D010865:Pilot Projects; D012204:Rh-Hr Blood-Group System / Q000276:immunology
chemical_list: D000017:ABO Blood-Group System; D012204:Rh-Hr Blood-Group System