See your dentist: Lockjaw and trismus and TMJ disorders are all different things. Lockjaw is also known as tetanus and is a serious infection. Trismus refers to difficulty or decreased openign of the jaw. This is sometimes due to muscle spasms or can be due to TMJ disorders. A dentist needs to do a thorough exam in order to diagnose the problem.
Answered 6/10/2014
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