it relaxes the muscles of the jaw,” Katz says. And research suggests that when Botox is injected into the muscles that move the jaw, people clench less frequently and experience less pain than ...

muscle pain ... and this in turn can result ... When you open something with your teeth, you have to shift your jaw to get ...

However, injecting a neurotoxin into the masseter muscle (a large muscle in the jaw connected to the temporomandibular joint) as a pain remedy from jaw clenching or teeth grinding is a popular ...