How many unit of dyspot to reduce my Jaw ,If I have botox resistance situation? (photos)

Thank you for your question. Botox or Dysport can be a very effective way to contour the jaw line by reducing the masseter shadow through the outer jaw skin. In addition, it can reduce symptoms of jaw clenching or grinding of teeth at night time. This is an advanced technique that requires a strong understanding of the underlying anatomy. Some side effects can results in some very unintented effects. This can include affecting the smile due to diffusion of the Botox into neighboring smile muscles. Over treatment can also overweaken your jaw muscles making it harder to chew food and causes your jaw muscles to relax too much when you sleep.The injection technique does vary by physical exam and the goals of the treatment. Facial contouring goals may change the injection sites themselves to affect different portions of the masseter as well as the dose. The strength of the masseters can be felt by palpation and also helps me to determine dosing. In general, I start with 15- 25 units of Botox (OR 50-75 units of Dysport) per side for most patients. If they have very strong masseters, then I may increase the dose, but more commonly ask them to return in three weeks for a touch up. Once you get the desired result, I let patients know that future treatments may require less to maintain the look or the jaw clenching symptoms, especially if they get treated as soon as they notice the symptoms return. This can be as soon as three to four months, but in some cases, patients report that it lasts six months or more. I find it depends on the dose we use and how many times we have done the procedure as the duration may lengthen for patients that repeat it regularly.

In my experience, if someone has a resistance to Botox, they will also have resistance to Dysport.  There would be no harm in trying the Dysport for your masseter muscle, but I doubt it would work.  Your physician would be able to calculate the correct amount of Dysport to use based on the amount of Botox that was used on you.  

FDA recommendations in the U.S suggest that a conversation of 3 units of Dysport® equals 1 unit of Botox Cosmetic®. Most physicians adhere roughly to these guidelines. 

In general it is 3:1 so for every 1 unit of Botox, the normal equivalent is 3 units of Dysport. The actual liquid amount is the same, but the way the company did the "units" differed hence the change. So if you got say 25 units of Botox per side of the jaw, then you'd need 75 units of Dysport injected into the same areas. "This answer has been solicited without seeing this patient and cannot
be held as true medical advice, but only opinion. Seek in-person
treatment with a trained medical professional for appropriate care."