Botox for Trismus

I've had trismus for over 3 weeks now after having a cracked tooth pulled.  This tooth had considerable work done on it and was going to get a crown when the dentist discovered it was cracked all the way down to the root.  My jaw was getting very stiff each time work was done.  Two days later I had it pulled and got the trismus.  I am currently going to both the oral surgeon, and a physical therapist.  I can assure you that nothing so far has worked.  Would botox?  If so, where would be a good place to have this type of treatment?  

[scottma]

Trismus is a common complacation after lower molar extraction. However, it tends to resolve within a week if appropriate antibiotics is administered. Another common cause of trismus is disc displacement without reduction. If there is no disc pathology involved, application of cold spray along masseter muscle , restoration of normal rang of motion is generally immediately restored. Seeing a tmj specialist is advised.

[JulieDesM]

I am seeing a specialist and have done this, to no avail.  Have you heard of Botox for it?

[scottma]

Botox exserts it's therapeutic effect by blocking neuromuscular junction, which resultis in paralysis of targeted muscle. However, therapeutic effect lasts 3-6 months. The clinician really needs to know whether mechanical blockage of tmj is present or not. Seeing a competent tmj specialist is advised.