Group

N

Facial pain intensity

Weekly frequency of headaches

Headache intensity

Pre-infiltration

14

7.8 ± 1.6

4.3 ± 2.4

8.6 ± 1.8

Saline

After 15 days

14

2.8 ± 3.7

0.004

2.1 ± 2.7

0.037

5.1 ± 4.0

0.008

Reduction

14

5.0 ± 4.0

2.1 ± 3.3

3.5 ± 3.8

Pre-infiltration

17

6.5 ± 1.8

4.1 ± 1.9

7.8 ± 1.6

Anesthetic

After 15 days

17

1.6 ± 2.1

<0.001

1.9 ± 1.7

0.002

4.4 ± 2.5

0.001

Reduction

17

4.9 ± 1.9

2.2 ± 2.2

3.4 ± 2.8

Pre-infiltration

16

7.0 ± 1.8

2.9 ± 2.5

7.9 ± 2.4

Control

After 15 days

16

5.8 ± 4.1

0.209

3.1 ± 2.3

0.919

6.6 ± 2.5

0.173

Reduction

16

1.3 ± 3.6

−0.1 ± 1.5

1.3 ± 3.2

p^*

p^*

p^*