What is Masseter Muscle Injection?
Masseter muscle is a thick and rectangular muscle of mastication found in the jawline. Patients with square lower jawline have a masseteric muscle hypertrophy or enlargement of one or both masseter muscles. This is very common with Asians, particularly Koreans, Chinese and other Southeast Asians.
Aside from genetics, enlargement of the masseter muscle is caused by asymmetric chewing caused by dental problems, temporomandibular joint dysfunction, food intakes and personal habits (ie. frequent gum chewing, jaw clenching or grinding and bruxism.
The masseter muscle injection reshapes your lower jaw to reduce the width and shape of your lower face.
Before & After
The masseter muscle is the main muscle of biting and grinding. It is a strong muscle in comparison to the frown muscles or forehead. We usually perform 3 to 5 small injections of anti-wrinkle product into the masseter muscle, as shown below. The amount of wrinkle relaxer used does vary but in general much larger amounts are needed when compared with treatment of wrinkles. Preventing the muscle from contracting over a period of time weakens the muscle and reduces its size.Often a repeat treatment will need to be performed 4-8 weeks later to ensure the best results with followup in 6 months. Over time as the muscle atrophies less muscle relaxant is needed with longer periods between treatments. The results improve significantly over the first year of treatment. The procedure is highly effective, with minimal or no pain and absolutely no downtime at all.
There is not typically any swelling, unless a bruise forms. If a bruise forms, this may take a few days to go away.