the periodontal ligament of the erupting tooth contained significantly more capillary fenestrations than the erupted tooth , both in terms of the number per unit area of endothelium ( 2.2/microns2 ) and in terms of total number per cubic millimetre of tissue ( 30.5 x 10 ( 6 ) /mm3 ) .
C0031093
periodontal ligament
C0040426
tooth