Mewing is a popular internet trend where individuals attempt to reshape their facial structure and jawline by consciously maintaining a specific tongue posture against the roof of the mouth. Proponents claim it can lead to a more defined jaw, improved facial symmetry, and even resolve certain dental issues. However, this practice is highly controversial and is largely dismissed by the medical and dental communities. Professionals highlight its lack of scientific foundation and the potential for causing physical harm.
Lack of Scientific Validation
Medical professionals caution about mewing due to the absence of clinical, peer-reviewed evidence proving its effectiveness for reshaping the facial skeleton. Claims that sustained tongue pressure can change bone structure are based on anecdotal evidence and social media testimonials, not controlled scientific studies. Facial bone structure is determined by a complex interplay of genetic factors, growth patterns, and environmental influences.
The growth plates in the facial bones of adults are fused, meaning gentle pressure from the tongue will not result in significant structural changes. While tongue posture is an important consideration in the proper development of a child’s face, the idea that a conscious change in adults can reverse years of growth is unsupported. Subtle visual improvements some adults report are more likely due to a change in muscle tone or improved head and neck posture rather than actual bone remodeling.
Orthodontic treatments rely on applying calibrated, continuous forces over months or years to shift teeth and influence jaw position based on established biological principles. Mewing oversimplifies craniofacial biology, suggesting a single, unregulated action can achieve the results of professional treatment. Using mewing as an alternative to professional care is based on hopeful speculation rather than medical reality.
Risk of Dental and Jaw Misalignment
The physical risks associated with mewing occur when attempted without professional oversight. Forcing the tongue into an unnatural or overly aggressive position can apply uneven pressure across the upper palate and teeth. This chronic, uncontrolled force can lead to unwanted tooth movement, resulting in malocclusion or a worsened bite.
Mewing carries the potential for developing or exacerbating Temporomandibular Joint (TMJ) dysfunction. Incorrect or excessive muscular strain from constant, forced tongue placement places undue stress on the jaw joint. This can lead to symptoms like pain, clicking, locking, or difficulty moving the jaw.
The practice can also lead to the development of an anterior open bite, complicating chewing and speech. Persistent, misplaced pressure from the tongue can cause gum recession, exposing the more sensitive tooth root. This exposure increases sensitivity and the risk of decay, creating a pathway for more serious periodontal issues.
Origin and Promotion by Non-Specialists
The concept of mewing is a popularization of “orthotropics,” developed by Dr. John Mew and promoted by his son, Mike Mew. The technique is named after the Mew family, who advocated for this alternative approach to traditional orthodontics.
The primary promoters of this technique have faced significant professional sanctions. Dr. John Mew was stripped of his dental license by the General Dental Council in the United Kingdom due to his unconventional practices. His son, Mike Mew, has also been struck from the dental register.
Following advice for complex anatomical changes from professionally disciplined sources is unwise. Mewing’s popularity is fueled by social media influencers, not established medical institutions like the American Association of Orthodontists, which cautions against the practice. This discourages individuals from seeking professional diagnosis and treatment, delaying necessary care.