Just over a couple of months ago I had my upper and lower jaw muscles injected with botox to relieve the symptoms of TMJ, however about 2 weeks after the treatment I noticed I can't smile as wide as I used to and one side of my mouth looks like it is drooping when I smile. I have had the treatment before and it was successful, but I only had botox injected in the lower jaw muscle that particular time. I am a little concerned as I don't want to look like this permanently.
Answers (4)
From board-certified doctors and trusted medical professionals
May 21, 2014
Answer: Botox in masseter muscle for TMJ will last 3-4 months