Nocturnal bruxism — settled by relaxing the masseter muscle.
Teeth grinding — medically called bruxism — is involuntary clenching and grinding of the teeth, most commonly during sleep. It wears down tooth enamel, causes morning jaw pain, triggers tension headaches, and over years reshapes the lower face by building up the masseter muscle. Treatment with precise anti-wrinkle injection to the masseter reduces contraction strength significantly. At Feonix Aesthetics in Coventry, GMC-registered doctors deliver this treatment, with the dual benefit of bruxism relief and gentle jawline slimming.
Book ConsultationTeeth grinding, medically known as bruxism, is the involuntary clenching, grinding, or gnashing of the teeth. It most commonly occurs during sleep (nocturnal bruxism) but can also happen during the day, particularly during periods of concentration or stress. Many people are unaware that they grind their teeth until a partner reports hearing the grinding sound at night, or a dentist identifies the characteristic wear patterns on the teeth. Bruxism is far more than a dental concern; it can cause significant pain, damage to the teeth and jaw joints, headaches, and changes to facial appearance due to the overdevelopment of the masseter muscles.
The causes of bruxism are multifactorial. Stress and anxiety are among the most significant triggers, with many people unconsciously clenching and grinding their teeth in response to emotional tension. Sleep disorders, particularly sleep apnoea, are strongly associated with nocturnal bruxism. An abnormal bite or misaligned teeth can contribute, as the jaw seeks a more comfortable position during rest. Lifestyle factors such as excessive caffeine or alcohol consumption, smoking, and the use of certain medications (including some antidepressants) can increase the likelihood of grinding. For many people, bruxism becomes a habitual pattern that persists even after the initial triggering factor has been addressed.
Night guards and dental splints can protect the teeth from grinding damage, but they do not address the underlying muscle overactivity that causes bruxism. Over-the-counter pain relievers and stress management techniques may provide some symptom relief but cannot reduce the force of the masseter muscles. Anti-wrinkle injections at Feonix Aesthetics directly target the cause of the problem, reducing muscle activity and providing both functional relief and aesthetic improvement. If teeth grinding is affecting your quality of life, book a consultation at our Coventry or Leamington Spa clinic to explore this highly effective treatment.
The consequences of untreated bruxism can be extensive. Chronic grinding wears down the tooth enamel, leading to increased sensitivity, fractures, and the need for costly dental work. The temporomandibular joints (TMJ) can become inflamed and painful, causing jaw pain, clicking, locking, and difficulty opening the mouth fully. Tension headaches and migraines are common in bruxism sufferers, often occurring upon waking due to overnight grinding. Earaches, facial pain, and disrupted sleep also frequently accompany the condition. From an aesthetic perspective, chronic bruxism causes the masseter muscles to enlarge significantly, giving the face a wider, squarer, more masculine appearance. This facial widening is a particular concern for clients who seek teeth grinding treatment in Coventry and Leamington Spa at Feonix Aesthetics.
Bruxism is remarkably common, affecting an estimated eight to ten percent of adults, though many cases go undiagnosed. It affects both men and women and can occur at any age, including in children. People in high-stress occupations, those with anxiety disorders, and individuals with certain personality types are at higher risk. Bruxism often runs in families, suggesting a genetic component. The condition frequently goes unrecognised for years because nocturnal grinding occurs during sleep, and the symptoms, including jaw pain and headaches, are often attributed to other causes.
Anti-wrinkle injections into the masseter muscles are the most effective non-dental treatment for bruxism and are a specialist offering at Feonix Aesthetics in Coventry and Leamington Spa. Botox or Relfydess is precisely injected into the masseter muscles on each side of the jaw. The injections partially relax these powerful grinding muscles, reducing their ability to generate the excessive clenching force that causes damage and pain. This does not affect normal chewing or speaking; it simply reduces the intensity of the involuntary grinding.
The treatment offers a dual benefit. Functionally, it provides significant relief from the jaw pain, headaches, and tooth damage associated with bruxism. Aesthetically, as the masseter muscles gradually reduce in size following treatment, the face appears slimmer and more defined, reversing the widening effect that chronic grinding creates. This jawline slimming effect is a welcome additional benefit for many clients.
Our experienced practitioners will assess the size and activity of your masseter muscles during a detailed consultation, determining the appropriate dose and injection points for your specific anatomy. The treatment itself takes just ten to fifteen minutes and involves minimal discomfort.
Functional relief from bruxism symptoms typically begins within one to two weeks of treatment as the masseter muscles start to relax. The full effect is usually felt within four to six weeks. The aesthetic slimming of the jawline develops more gradually, becoming noticeable at four to eight weeks as the muscles reduce in bulk. Results typically last three to six months, and with regular treatment, many clients find that the masseter muscles gradually atrophy over time, meaning longer intervals between sessions may become possible.
Bruxism has several contributing causes. Stress and anxiety are the most commonly cited triggers — the masseter muscle is deeply connected to emotional tension. Sleep disorders including sleep apnoea have a strong association with nocturnal bruxism. Bite misalignment, certain medications (notably SSRIs), caffeine and alcohol all contribute. Genetics play a role — bruxism often runs in families. Children grind their teeth commonly and usually grow out of it; adult-onset bruxism typically reflects underlying stress, sleep disturbance or medication use that warrants investigation alongside treatment.
Stress management, reducing caffeine and alcohol (especially in the evening), good sleep hygiene, and addressing sleep disorders all help reduce bruxism frequency. Mouthguards from your dentist protect the teeth from damage but do not stop the grinding itself — they just prevent the consequences. Jaw stretching exercises can relieve morning tension. What home measures cannot do is reliably reduce masseter contraction strength in a client with established chronic bruxism. For persistent cases, medical treatment is the route to consistent relief.
Botulinum toxin injection to the masseter muscle is the most effective clinical treatment for persistent bruxism. At Feonix Aesthetics, GMC-registered doctors place precise doses of Botox or Relfydess into specific points of the masseter, reducing contraction strength by approximately 50–60% without affecting normal chewing. Nocturnal grinding reduces dramatically; morning jaw pain and headaches typically resolve; the face often looks gently slimmer as the hypertrophied muscle reduces. The treatment works alongside stress management and (where needed) a dental mouthguard.
Effects typically begin within 7–10 days, with full muscle relaxation at 4–6 weeks as the masseter gradually atrophies. Most clients report meaningful reduction in morning jaw pain and headache within the first 2 weeks. Results last 4–6 months per treatment cycle. Many long-term clients find they need progressively lower doses over years as the masseter remains partially atrophied between treatments. The jawline slimming effect becomes more pronounced with repeated sessions as the muscle gradually reduces in bulk.
Start with a consultation at our Coventry clinic (15 Little Park Street). A GMC-registered doctor assesses the masseter size and strength, asks about grinding pattern and symptoms, and recommends the appropriate dose. Clients travelling from Leamington Spa or further afield are welcome — consultations can be booked at either Feonix location. Masseter anti-wrinkle is £350. Prices include the 2-week review and any top-up if needed. Klarna finance is available.
Bruxism has a medical treatment that works within weeks. A GMC doctor at Feonix Aesthetics assesses the masseter, calibrates the dose, and settles the grinding without affecting chewing — morning jaw pain, headaches and tooth wear all reduce.
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