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. 2016 Jun 15;9(2):118–123. doi: 10.5005/jp-journals-10005-1346

Table 1: Range of difference in working length from radiovisiography in two methods being tested

Range of
difference (mm) 		       Dentaport ZX        Propex II       
       No.        %        No.        %       
0        9        30        21        70       
0-0.5        12        40        6        20       
> 0.5        9        30        3        10       

X2 = 9.800 (df = 2); p = 0.007