Effect of Different Treatment Techniques on Masseter Muscle Thickness

The occlusal splint was fabricated from a 2 mm hard splinting resin material on the plaster model obtained by taking impressions of the patients\' upper jaw.

Control group given protective advice such as supporting the jaw when yawning, not chewing gum, not opening the mouth for too long and not opening it too wide, and chewing on both sides when eating.

A total of 50 U of botulinum toxin, 25 U in each muscle, was injected