Mewing is a technique that has gained significant traction across social media platforms, promising to enhance facial aesthetics and sharpen the jawline. This popular internet trend suggests that a specific tongue posture can restructure the face, leading to a more defined profile and the sought-after appearance of hollow cheeks. The core question is whether this self-administered practice can genuinely separate the cheek from the jawline or if the supposed results are merely wishful thinking. Examining the mechanics of the technique against established facial anatomy is necessary to understand these claims.
Defining the Mewing Technique
Mewing is a form of oral posture training named after British orthodontist John Mew and his son, Michael Mew. The technique instructs individuals to maintain a constant resting position for the tongue by pressing the entire surface against the roof of the mouth, or the palate. Proper tongue posture involves positioning the tip just behind the front teeth without touching them, sealing the lips, and breathing through the nose.
Proponents believe the gentle, consistent upward force of the tongue can guide the growth of the maxilla (upper jaw) and mandible (lower jaw) forward and outward. The theory suggests that maintaining this posture throughout the day can influence the underlying skeletal structure over time.
The Factors That Determine Cheek Appearance
The appearance of “hollow cheeks,” or a sharp contrast between the cheekbone and the mid-face, is determined by anatomical factors unrelated to tongue placement. The most significant element is the size and volume of the buccal fat pad. This is a deep mass of adipose tissue located between the buccinator and masseter muscles. Surgical removal of this fat pad, known as a buccal lipectomy, is the established medical procedure for creating a sunken cheek appearance.
Facial structure is also heavily influenced by the projection and width of the zygomatic arch, or the cheekbone, which is determined by genetics. A naturally wide or prominent cheekbone creates a shadow effect that contributes to the hollow look. Furthermore, overall body composition, specifically a low body fat percentage, significantly impacts the volume of subcutaneous fat in the face, making bony contours more visible.
Scientific Plausibility of Facial Restructuring
The central claim that mewing can significantly alter the maxilla and mandible, especially in adults, lacks robust scientific support. Adult bones are rigid and resistant to the low-level force exerted by the tongue, having completed the vast majority of their growth. Orthodontic appliances, which are designed to move teeth and influence jaw position, use continuous, controlled pressure substantially greater than what a muscle can generate.
While proper tongue posture is considered beneficial for oral health and may subtly strengthen surrounding muscles, there is no credible evidence it can reduce the size of the deep buccal fat pad. The buccal fat pad is a distinct anatomical structure that does not respond to muscle exercises. Therefore, the idea that mewing can create a shadow under the cheekbone is not supported by facial anatomy. Any perceived changes are often attributed to improved muscle tone, better head posture, or a placebo effect.
Risks Associated with Improper Mewing
Attempting to force the tongue into an unnatural position or applying excessive pressure can lead to negative health consequences, primarily related to the jaw joint. The temporomandibular joint (TMJ), which connects the jawbone to the skull, can become strained. This strain may lead to pain, clicking, or a disorder known as TMD, which occurs when the muscles and joints are overworked or held in a tense position.
Improper technique can also negatively impact dental alignment. Constantly pushing the tongue against the teeth can cause them to shift or develop gaps. If the pressure is unevenly distributed, it may contribute to facial asymmetry or an altered bite. These risks underscore the importance of consulting a dental professional, such as an orthodontist, rather than relying on unproven, self-administered techniques.