hole the arc length per area is highest in the drilled section, while near the holes, the foramen has the highest arc length per area for this type of damage (Table 3-9).


a


near


Figure 3-11: Interaction plot for intra-osteonal microcracks and the effects of proximity
            to the hole.


  1 
  .9 
S.8 E .
.7
6).6
2
< .4
  .3 
  .2
  .1 
  0-


a-


Control


Drilled


Foramen


Figure 3-12. Graph for intra-osteonal microcracks (IOM) and the effects of hole type

Table 3-9: Results for intra-osteonal microcracks (IOM).
                           Intra-osteonal microcracks (arc length/m m2) Far                                                       Near


Hole Type Control Drilled Foramen


Mean
0.06 0.21
  0.1


Std. Dev
   0.04 0.19 0.05


Mean
0.31 0.34 0.88


Std. Dev
   0.32 0.31 0.39