Figure 2. Graphs showing (a) the number of canals per mm2, (b) the cross-sectional area of canals, (c) the canal density, and (d) the mineralization density of cortical bone for dentate (n = 22), partially dentate (having anterior teeth and no more than one posterior tooth, n = 27), and edentulous individuals (n = 68) at the third molar region of the mandible. Mean, 95% confidence interval.