Simple line drawing of a woman's face with one eye open, one eye closed, and a large white spot on her cheek.

Jaw Slimming & Teeth Grinding 

What does it do?

When the masseter muscle becomes overactive due to teeth grinding, it can lead to increased muscle strength and bulkiness in the lower face. Unfortunately, this can contribute to discomfort in the jaw, along with headaches and neck pain.

At NU Clinic, we offer Wrinkle Relaxing Injections using Botox for the masseter muscle, which can be highly beneficial in alleviating pain caused by teeth grinding, also known as 'bruxism’. An additional benefit is the slimming of the lower face as the muscle loses its bulk over time. 

Book Appointment 
who is it for?

At NU Clinic, we usually offer this treatment for patients with strong masseter muscles. When biting together and clenching, the muscle can be felt bulging out to the side, it is likely that you have strong masseter muscles. 

In the cases of patients with less strong masseter muscles who undergo the treatment, the jawline slimming effect may not be as pronounced. The extent of the jawline slimming effect is variable and reliant on individual factors such as your unique anatomy, the size of the masseter muscle, and your bone structure. 

While this treatment can provide relief from pain caused by teeth grinding, we strongly recommend also consulting a dentist to protect your teeth with a mouthguard. Excessive grinding can cause significant damage to your teeth, and a mouthguard can be instrumental in preventing such issues.

At NÜ Clinic, we tend to not provide this treatment in patients over the age of 50 as it can make the appearance of jowls and loose skin on the lower-face worse.

TREATMENT + recovery

Appointment duration is 30 minutes, with the actual treatment time lasting approximately 5 minutes with very minimal downtime. Results vary, most patients observe a return of full muscle movement between 3-4 months. This treatment can take longer to reach full effect compared to other muscle-relaxing injections. We typically advise patients to allow for a waiting period of about 4 weeks to experience the treatment's complete benefits.

frequently asked questions

  • As with any medical treatment, there are potential side effects and risks to consider. Mild bruising, and cold-like symptoms are common after the treatment. In some cases, slight asymmetry may occur, especially if there was some asymmetry present before the treatment. However, this is usually easily corrected during your follow-up appointment.

    During the initial period after the procedure, you may notice a temporary limitation in your ability to smile fully. This effect is due to the impact on the muscles responsible for smiling and typically resolves within a few weeks, being barely noticeable.

    At NÜ Clinic, we always prioritise the safety of our patients. For this reason, we recommend not receiving this treatment more frequently than every 6-9 months. From our experience, excessive weakening of the masseter muscle can potentially affect the tightness of the jawline. To maintain the best possible results and ensure the natural aesthetics of the face, it's essential not to over-treat the area.

  • Most patients do not find muscle relaxing injections painful, but some mild discomfort is to be expected.

  • It is essential to note that allergies to Botulinum toxin are extremely rare. For the safety of our clients, we cannot administer this treatment to individuals who are pregnant or breastfeeding. If you have any concerns or questions about the suitability of this treatment for you, we welcome you to schedule a consultation to explore your options further.

book appointment

Testimonials

  • “Dr Oonagh is truly the best - I wouldn’t go to anyone else. I trust her to give me her honest opinion on the treatment which would be best for me, and that includes her telling me what isn’t what’s right for me at this moment in time. I know she would never push a treatment; instead, she’ll offer you her highly knowledgeable advice to help you find the best option for you. so lovely, and makes you feel completely at ease.”
    – Phoebe

  • “I am so happy I started my Botox journey with Oonagh; from the first consultation to treatment to aftercare she has been absolutely fantastic. She takes time to explain everything, and made me feel at ease. She is so knowledgeable and friendly. The whole experience was fantastic and I can only highly recommend Oonagh. I am left with a natural finish, feeling great and am looking forward to continuing my journey in Oonagh’s trusted hands.”
    – Carolin

  • “I came to see Dr McSwiney to address the lines in my forehead and above my mouth which I felt made me look older, and tired! She listened to my wishes to not look ‘done’ and gave me the subtle result I desired. I get compliments on how well I look, and when I tell people I’ve had a little help they can’t believe it. Oonagh is fabulous!”
    – Catherine

  • “Thank you Dr Oonagh for looking after me. I'm looking forward to seeing how the muscle relaxing treatment takes. The only facial aesthetic provider that I'd trust my face with.”
    – Raymundo

  • “I am so pleased with my results and my whole experience at Nü Clinic with Dr Oonagh McSwiney. Dr Oonagh McSwiney fully explained the whole procedure to me and made me feel really comfortable throughout my visit. My lips look really natural and I am over the moon with the results, thank you!”
    - Amy

  • “Oonagh is professional and friendly. I completely trust her and the results of the treatments are always what I want. Highly recommend her; she makes you look the best version of yourself. I wouldn’t go anywhere else!”
    - Katherine

  • “Dr Oonagh was so patient throughout the entire process from consultation to aftercare. She is clearly extremely knowledgeable and experienced and provided a lot of reassurance. She took time to understand my concerns and gave me exactly what I wanted in terms of the finished outcomes. I can’t recommend her highly enough.”
    – Nina

  • “Dr Oonagh is the best practitioner you will ever find, the only practitioner you will ever need to look like the best ever version of yourself and you will never look or feel anything other than fabulous after your treatment with her - I cannot recommend a visit highly enough! She is amazing!”
    - Judy

  • “From start to finish Dr Oonagh was professional, knowledgable and listened to exactly what I wanted whilst also providing her professional opinion too. To top it off she’s an incredibly lovely and bubbly person, and the appointments have all been so enjoyable. Would highly recommend.”
    – Abby

  • “Dr Oonagh was so welcoming and reassuring at my treatment. Would thoroughly recommend her. Treatment room was clean with a beautiful ambiance and Dr Oonagh is very knowledgeable in what she does.”
    – Florence

  • “Exactly what I wanted for my lips, very subtle but makes a huge difference. Oonagh is the only one I trust to do this, she’s fantastic, highly recommended.”
    – Jackie

  • “I’m a returning client now. I have been so happy with the results of my initial treatment I’d never consider going elsewhere. Dr Oonagh is incredibly patient answering all my questions, and I always feel completely confident knowing I’m in the hands of someone who has such a detailed understanding of facial anatomy.”
    – Nina

  • “Oonagh was brilliant: friendly, knowledgeable and meticulous. Would definitely recommend for honesty and artistry.”
    – Holly

  • “Oonagh was very professional and explained what she felt would be the next treatment for me and my wrinkles! The treatment was painless and no bruising at all.”
    - Rachel

  • “Amazing results with Oonagh. Very professional and I love the fact she encourages a natural look”
    - Georgie

  • “Oonagh makes me instantly at ease and provides a very professional service explaining each stage of the procedure along the way. She constantly checks that I am ok and takes pride in the finishing touches of creams to assist healing. 
Wouldn’t go anywhere else!”
    - Rachel

  • “Oonagh offers a very professional service. She listens to your needs and explains the treatments and option’s thoroughly. Highly recommended.”
    – Vanessa

  • “Dr Oonagh is just brilliant! She listens to what you want to achieve, she guides and advises with expertise, and she’s very nice with it. I would highly recommend her.”
    – Kate

Results

Before and after images of a woman's face showing improved skin texture and reduced hyperpigmentation, with the text 'nü clinic' at the bottom.
Side-by-side comparison of a woman with clear skin on the left and with mild redness and irritation on the right, both wearing a black top with a high collar.
Before and after close-up photos of a woman showing facial improvements.
Side-by-side comparison of a woman's face before and after cosmetic treatment, showing smoother skin and enhanced features.
Close-up photo showing before and after images of a woman's lips post cosmetic procedure. The top image shows natural lips, while the bottom image shows fuller, plumper lips with a pinkish hue and gloss.
Before and after close-up images of a woman's eyes showing eyebrow and eyelash enhancement.
Side-by-side comparison of a woman's face before and after skincare treatment showing improved skin texture and reduction in redness.
Side-by-side before and after photos of a woman's face showing improved skin texture and tone after a medical aesthetic treatment at Nu Clinic.