Comparison between Collagen and Lidocaine Intramuscular Injections in Terms of Their Efficiency in Decreasing Myofascial Pain within Masseter Muscles: A Randomized, Single-Blind Controlled Trial
Table 1
Activities of investigators during the trial.
Visit
1 (screening and inclusion)
2 (baseline)
3 (1st follow-up)
4 (2nd follow-up)
Day of the study
−
Day 0
Day 7
Day 14
Injection
−
+
+
−
Measure EMG
−
EMG.I.1.
EMG.I.2.
EMG.I.3.
EMG.II.1.
EMG.II.2.
EMG.II.3.
EMG.III.1.
EMG.III.2.
EMG.II.3.
EMG.I.1.NP
EMG.I.2.NP
EMG.I.3.NP
EMG.II.1.NP
EMG.II.2.NP
EMG.II.3.NP
EMG.III.1.NP
EMG.III.2.NP
EMG.II.3.NP
Measure VAS
−
VAS.I.1.
VAS.I.2.
VAS.I.3.
VAS.II.1.
VAS.II.2.
VAS.II.3.
VAS.III.1.
VAS.III.2.
VAS.III.3.
EMG.I.1. = EMG, Group I first measurement; NP = no pain.
