negative group | positive group | diode laser group | diode-group | |
---|---|---|---|---|
Coronal region | 3.71 ± 0.46A | 2.57 ± 0.49B a | 1.86 ± 0.35C a | 1.14 ± 0.35D a |
Middle region | 3.86 ± 0.35A | 2.43 ± 0.49B a | 1.71 ± 0.42C a | 1.14 ± 0.35D a |
Apical region | 3.71 ± 0.45A | 3.14 ± 0.35B b | 2.43 ± 0.49B b | 1.29 ± 0.45D a |