Can protruding mouth be self-corrected?

　　If mouth protrusion is due to mild muscular habits, it can be improved early through training; however, if caused by skeletal or dental deformities, it cannot self-correct and requires professional intervention. If mouth protrusion is noticed, seek medical evaluation promptly to identify the cause and begin timely treatment to prevent worsening.

　　If mouth protrusion results from long-term不良 oral habits such as chronic mouth breathing or lower lip biting, and the individual is still in the growth and development stage, it may be improved through targeted exercises. For example, consistently practice keeping the mouth closed and breathing through the nose, avoiding open-mouth posture; perform lip muscle exercises such as firmly pressing the lips together for 5 seconds, then relaxing, repeating 10–15 times. Long-term adherence can help adjust muscle function and alleviate mild protrusion.

　　If the protrusion is caused by abnormal skeletal development or misaligned teeth, self-correction cannot alter bone structure or tooth position, and medical treatment is necessary. Children and adolescents may benefit from orthodontic treatment to correct dental protrusion; adults with significant skeletal issues may require combined orthodontic and orthognathic surgery to effectively improve the appearance of mouth protrusion.

　　In daily life, it's important to correct不良 oral habits, avoid chronic mouth breathing and biting hard objects, and maintain proper sitting and standing posture to minimize adverse effects on jaw and facial development.