Table 1: Intergroup comparison of the weights (Independent t-test).

Variable	Group A ProTaper R N=20		Group B Reciproc N=20		Difference among Groups A and B		P
	Mean	S.D.	Mean	S.D.	Mean	S.D.
Difference of Initial and Final Weights (mg)	0.4985	0.3796	0.4673	0.4382	0.0312	0.0585	0.4054