Table 2.

Data summary of the included studies.

Authors	Country	Study design	Patients (n)	Term	Gender	Age	Symptoms
Jacobsson and Hollender. [23]	Sweden	Retrospective study	11	DSO	F (7), M (4)	22–53	Pain, swelling, trismus, ankylosis from TMJ
Kuijpers et al. [24]	Netherlands	Retrospective study	6	DSO	F (5), M (1)	23–78
Montonen et al. [25]	Finland	Prospective, randomized, double-blind and placebo controlled.	10	DSO	F (8), M (2)	31–77	Pain
Yoshii et al. [19]	Japan	Retrospective study	9	DSOM	F (5), M (4)	19–70	Pain, swelling, trismus