Masseters
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The masseter is a thick, powerful chewing muscle that spans from the zygomatic arch to the angle of the mandible on each side of the face. It is one of the strongest muscles in the body relative to its size. Its primary function is mastication — the closing force of the jaw — but its size significantly influences the visible width and shape of the lower face.
In patients with masseteric hypertrophy — enlargement from clenching, grinding, or genetic predisposition — the muscle creates a square, widened jaw angle that many patients find aging or overly masculine depending on their aesthetic goals. Wrinkle relaxers placed into the masseter reduce its bulk over time, slimming the lower face shape.
Masseter treatment changes the shape of the face in a way that's hard to attribute to anything specific. It just looks more balanced.
The masseter is a thick, powerful chewing muscle that spans from the zygomatic arch to the angle of the mandible on each side of the face. It is one of the strongest muscles in the body relative to its size. Its primary function is mastication — the closing force of the jaw — but its size significantly influences the visible width and shape of the lower face.
In patients with masseteric hypertrophy — enlargement from clenching, grinding, or genetic predisposition — the muscle creates a square, widened jaw angle that many patients find aging or overly masculine depending on their aesthetic goals. Wrinkle relaxers placed into the masseter reduce its bulk over time, slimming the lower face shape.
Masseter treatment changes the shape of the face in a way that's hard to attribute to anything specific. It just looks more balanced.
Masseter size primarily genetic; hypertrophy from bruxism begins accumulating.
Stress-related bruxism often increases masseter activity; noticeable jaw widening in some patients.
Established hypertrophy. Wide jaw angle increasingly disproportionate as midface deflates.
Continued hypertrophy with lower face bone resorption creating heavy jaw-to-midface imbalance.
Masseter size is largely genetic at this stage. Patients with bruxism or high jaw muscle activity may already have noticeable masseter hypertrophy.
Continued bruxism or clenching compounds masseter hypertrophy. Some patients seek treatment after a dentist identifies grinding as a clinical issue.
Masseteric bulk contributes to lower face squaring. As midface volume declines, a wide jaw can create a disproportionate lower face appearance.
Masseter bulk with significant mandibular bone resorption in the lower face can create a heavy jaw-to-midface imbalance that affects overall facial proportion.
Slim a square lower face and create a more oval facial silhouette
Reduce jaw tension, clenching, and the dental damage that goes with it
Improve lower face proportion as midface deflation makes jaw width more pronounced
Masseter treatment at CAMI uses wrinkle relaxers placed into the body of the muscle at multiple points to achieve gradual atrophy over 4–8 weeks. The effect is cumulative — significant slimming typically requires 2–3 treatment cycles before the full result is visible.
Dosing is assessed per patient based on masseter bulk and treatment goals. Over-dosing creates a hollow jaw angle that is difficult to reverse and looks unnatural. We dose conservatively on first treatment and increase gradually based on response.
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