Injecting Botulinum toxin directly into the masseter muscle has two benefits, aesthetically as well as medically.
By injecting botulinum toxin directly into the masseter muscle (the large muscle that moves the jaw), the muscle is weakened enough to stop involuntary grinding of the teeth and clenching of the jaw. This significantly relaxes the muscle and reduces the wear and tear on the teeth due to grinding. Damage to the TMJ (temporomandibular joint) and headaches should be reduced or eliminated as well. Voluntary movements, such as chewing and facial expressions, are usually not effected at all by Botox, Dysport or Xeomin.
Effectiveness of Botulinum Toxin for Bruxism has shown to be very effective.
Although botulinum toxin injections are not a cure for bruxism, they can effectively control the uncomfortable symptoms better than a nightguard for some patients. Botulinum toxin used for treating bruxism typically lasts for three to six months.
Aesthetically, when Botulinun toxin is injected in the Masseter muscle, it weakens the muscle and decreases the bulginess appearance (wide jaw). This provides the aesthetically pleasing V-Shaped facial features.
Serious side effects have been reported including swelling and rash with Botox. But it is unlikely for the Botox injected one month ago to give you allergic reaction in the lips. It is important to have Botox procedure done at a medical clinic by a experienced Medical Doctor so it can be treated immediately. FDA has reported “Serious and/or immediate hypersensitivity reactions have been reported. These reactions include anaphylaxis, serum sickness, urticaria, soft tissue edema, and dyspnea.