Table 2 Baseline pain variables, awareness of parafunctions and diagnoses according to RDC/TMD Axis I in 40 patients with myofascial temporomandibular disorders randomized to treatment with active substance (GRA) or control substance (CTR)

RDC/TMD Axis II

Duration of myofascial pain (months)

 Mean (SD)

80 (54)

82 (66)

 6-12 months

1

1

 ≥12 months

19

19

Frequency of myofascial pain

 Recurrent

5

8

 Persistent

15

12

Current myofascial pain intensity (NRS 0–10)

 Median (IQR)

6.0 (4.0)

6.0 (4.0)

Worst myofascial pain intensity last 6 months (NRS 0–10)

 Median (IQR)

8.0 (2.0)

8.0 (2.0)

Average myofascial pain intensity last 6 months (NRS 0–10)

 Median (IQR)

5.0 (3.0)

6.0 (5.0)

Pain area (AU)

 Median (IQR)

5930 (5059)

3861 (13596)

Awareness of clenching/grinding

 Daytime

1

2

 Nighttime

2

1

 Both day- and nighttime

15

15

RDC/TMD Axis I

 Myofascial pain (Ia)

10

13

 Myofascial pain (Ib)

10

7

Disc displacement with reduction (IIa)

 One side

5

5

 Both sides

7

7

Arthralgia (IIIa)

 One side

1

0

 Both sides

4

3

Osteoarthrosis (IIIc)

 One side

0

1

 Both sides

1

1