Table 1 Mean value ± standard deviation of smear layer scores of different groups

Overall

5^a

3.71 ± 0.46^b

3.25 ± 0.47^c

3.00 ± 0.77^c

2.96 ± 0.71^c

Coronal

5^d

3.47 ± 0.52^e

3.02 ± 0.41^f

2.67 ± 0.62^f

2.40 ± 0.51^g

Middle

5^h

3.67 ± 0.49ⁱ

3.33 ± 0.49^j

2.80 ± 0.78^j

2.87 ± 0.52^j

Apical

5^k

4^l

3.40 ± 0.51^m

3.53 ± 0.64^l

3.60 ± 0.51^l