What are the side effects to masseter reduction with Botox, and how long does the swelling last?
Doctor Answers 11
Masseter reduction with Botox - dosage and side effects
The worst, unwanted side effect is alteration of the smile. This happens if the injection is placed too high or too anteriorly. This can result in undesired weakening of the muscles that pull back/elevate the angle of the mouth during smiling.
Other side effects include 1) the face becoming too slim, 2) the jowls appearing more prominent because the back of the face is less bulky.
There is not typically any swelling with the botox injection, unless a bruise forms. If a bruise forms, this may take a few days to go away.
One other caveat is that if the "square jawline" is due to an angular jawbone, botox will not change the shape of the jawbone. It only softens and shrinks the masseter muscle.
There are no precautions to take before treatment other than to be certain one is not pregnant, and no swelling occurs with treatment.
I would be happy to answer any additional questions you might have.
All the best, Dr. Clark
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Important considerations during Botox for masseter reduction
A typical "moderate" dose is 50 units, or 25 units of Botox on each side. Immediately after the procedure there typically is not any discernible difference, as the masseter muscle is so bulky to begin with that the volume of Botox does not make a huge visual difference.
With an experienced physician the main possible side effects are bruising (<5% of patients) and you may notice you become tired sooner when chewing excessively (all day gum chewing or 22 oz steak etc).
Botox for Masseter Muscle
it typically takes 20 units on each side to treat the Masseter muscle. There should be no swelling. With continued treatments every 4 to 6 months you will see improvement and more facial slimming. Best, Dr. Green
#botox for masseter reduction or facial sliming is a safe and effective procedure
usually it is 3 - 5 points per side for the injection with the doses disturbed among these points. The procedure is quick. Effects are seen 3 - 4 weeks after the procedure and at 6 weeks you will notice the full effect after your first procedure.
This procedure will help reduce the bulkinessor heaviness of the jaw line and achieve a slimming effect.
Subsequently you may require lesser units if you have the procedure related at regular interval of 4 months in the initial1 year and post that the interval between sessions can be longer.
Swelling or bruising post this injection is rare.
In case of swelling, it settles typically within 72 hrs
Botox injection of the masseter muscle
Masseter and botox
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Stephen Weber MD, FACS
Denver Facial Plastic Surgeon
Stephen M. Davis, MD, FACS
Green Hills Plastic Surgery
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