Effects of different blood groups on the reproduction of periodontal pocket bacteria

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). Conclusion: 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.