Table 2 Characteristics of the patients

Number of patients

30

37

67

Examinations total

112

132

244

Average pain score before treatment

7.3

7.1

7.2

Standard deviation of pain score before treatment

1.59

2.02

1.83

Median of pain score before treatment

7

8

7

Range of pain score before treatment

4–10

3–10

3–10

Average pain score after treatment

4.2

4.1

4.1

Standard deviation of pain score after treatment

1.91

2.22

2.1

Median of pain score after treatment

4

4

4

Range of pain score before treatment

0–9

0–8

0–9