The periodontal disease etiology has been a demesne of scrupulous research, with a myriad of bacterial phylotypes inhabiting the periodontal pockets. The aim of our study was to assess the frequency of Filifactor alocis in type 2 diabetes mellitus (DM) subjects having a healthy periodontium (DH) or chronic periodontitis (DCP) and its correlation with clinical parameters and red complex bacteria. Polymerase chain reaction was carried out for the detection of F. alocis and red complex bacteria from subgingival plaque samples. The data were analyzed using Fisher’s Exact Test and Pearson’s chi-square test. A p value < 0.05 was considered statistically significant. F. alocis was detected at considerably higher levels in DCP (p < 0.05). F. alocis presence was also positively correlated with T. forsythia detection and the clinical parameters PD and CAL (p < 0.05). Subjects with good glycemic control showed a considerably lower detection of F. alocis as compared to fair- and poor-glycemic-control subjects. This is the first paper reporting the co-occurrence of F. alocis and T. forsythia in diabetic subjects with chronic periodontitis. These findings show that F. alocis can play an important role in establishing synergistic collaborations with other pathogenic oral microorganisms and speeding up the course of periodontal disease in diabetics.
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