Figure 1.

Periodontal destruction, but not increased periodontal inflammation, is associated with greater α-diversity. (a) shows community richness (observed and estimated) for subjects with periodontitis (P) in sites with bleeding (PB) and those without bleeding (PnB) and for communities from healthy subjects (H). In (b) evenness of communities was compared, while (c) shows comparisons of diversity. *indicates a P<0.05. To compare P and H, communities from bleeding and non-bleeding sites were combined. α-diversity metrics were calculated after subsampling to obtain equal number of sequences per library.