FIG. 2.

Relationship between periodontal status and microbial stability and diversity for 24 subjects over 2 years. (Top) Relationship between clinical status and microbial conservation. (Center) Relationship between the number of species lost or gained over 2 years and clinical status. (Bottom) Relationship between mean microbial diversity (number of species present in each subject over 2 years) and clinical status. The standard deviation (small lines), group mean (central line in diamond), and 95% confidence intervals (height of diamond) are shown for each group.