Effectiveness of Parameters in Quantifying Root Canal Morphology Change after Instrumentation with the Aid of a Microcomputed Tomography

Table 2

The mean values (standard deviation) of the ratio of surface area change to volume change and SMI change after the ProTaper instrumentation in straight and curved resin simulated root canals.

Groups	ΔSA/ΔV	ΔSMI
Straight	6.13; (1.11)	0.86 ns (0.63)
Curved	7.28; (0.79)	0.74; (0.39)
Significance between; groups		ns

Statistically significant at p<0.01 level.
Statistically significant at p<0.001 level.
ns: not statistically significant (n=10).