Efficacy of Botulinum Toxin in Temporomandibular Disorders

The solution for injection was prepared immediately before the intervention, by dissolving the vials of BTX, kept refrigerated at 5ºC, in 1 ml of sterile saline solution at room temperature. Eight injection sites were marked, three located in the masseter muscle, two in the lateral pterygoid muscle, one in the temporomandibular joint (TMJ) and two in the temporalis muscle. A 1 cc marked insulin syringe was used for intramuscular injection of the prepared solution, according to the locations and amounts proposed by Kim et al. and Ho et al. with a total dose of 100 U in each patient.distributed at the different injection sites.