Jawline slimming – or masseters reduction for cosmetic purposes – is a simple yet effective procedure that involves the injection of the neurotoxin botulinum type A into the large masseter muscles to create a slim and more feminine jawline.
The masseter muscles are the muscles that are attached at the angle of your jaw and control all the movements related to chewing food. For some people, strong jaw muscles are part of their normal anatomy. However, for others a square jaw line is the result of a condition called bruxism, which causes excessive teeth grinding or clenching.
With overuse from habitual teeth grinding, the masseter muscles become over developed and more pronounced, causing the shape of the lower face to alter and acquire that strong ‘square-jawed’ look (along with other painful and potentially more serious symptoms).
Clenching or grinding teeth is an involuntary movement, which we cannot control and can occur either while awake or asleep. The medical term for unconscious teeth grinding and jaw clenching is bruxism, and many people suffer of it for years without even realising it.
70% of grinding and clenching happens at night when we sleep, but it can also happen while we are concentrating (for example driving, reading, or watching TV) or under stress.
This causes a hypertrophic growth of the muscles attached to the jaw, called the masseters, and therefore a wider square-looking face.
In addition to the aesthetic reasons behind treating the masseter muscles, many people with bruxism also suffer from pain and discomfort which has previously only been treated with special splints and physiotherapy.