Group

First visit

After 2 week

After 4 week

After 6 week

Group A

Mean ± SD

16.000 ± 0.00

14.66 ± 1.632

10.91 ± 3.322

6.458 ± 5.458

P*

-

0.001

0.000

0.000

Group B

Mean ± SD

16.00 ± 0.000

15.00 ± 0.000

13.35 ± 1.886

8.208 ± 3.787

P*

-

-

0.001

0.000

Group C

Mean ± SD

16.00 ± 0.000

11.740 ± 2.395

6.481 ± 3.501

2.074 ± 2.302

P*

-

0.000

0.000

0.000