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Table 2 Comparison of the mean distance from the tip of root canal filling to the radiographic apex in group I and group II in different subgroups.

From: Comparison between two methods of working length determination and its effect on radiographic extent of root canal filling: a clinical study [ISRCTN71486641]

Variable

Group I

Group II

P value

  

Number

Mean

SD

Number

Mean

SD

 

Tooth Position

Premolar teeth

17

-0.5

0.6

19

-0.3

0.5

0.341

 

Molar teeth

50

-0.4

0.5

57

-0.3

0.5

0.381

 

Upper teeth

36

-0.5

0.6

55

-0.3

0.5

0.270

 

Lower teeth

32

-0.4

0.4

29

-0.4

0.3

0.963

Tooth Status

Vital

19

-0.6

0.6

24

-0.3

0.6

0.829

 

Non- vital

48

-0.4

0.4

50

-0.4

0.4

0.152