How to correct gum exposure when smiling

　　In daily life, we all enjoy smiling when we feel happy. Smiling is an expression of emotion and also a polite way to greet others. However, exposing the gums while smiling can be aesthetically unpleasing. So, how can a “gummy smile” (excessive gingival display during smiling) be corrected?

　　How to Correct a Gummy Smile

　　A gummy smile arises from various underlying causes, and treatment must therefore be tailored accordingly. First, excessive gingival tissue covering the upper anterior teeth may be the culprit—this results in visible gum tissue when smiling. In such cases, a localized gingivectomy (removal of excess gum tissue) can be performed to expose more of the upper teeth and resolve the issue. Second, overactivity or hypertrophy of the levator labii superioris muscle may cause excessive upward movement of the upper lip during smiling, thereby revealing excessive gingiva. Correction may involve surgical partial resection of the levator labii superioris muscle or elevation of the levator labii superioris alaeque nasi muscle.

　　A relatively simple alternative is injecting botulinum toxin into the levator labii superioris muscle to reduce its contractile strength, thereby minimizing excessive gum exposure during smiling. Lastly, a gummy smile may result from vertical maxillary excess (overgrowth of the upper jaw), which requires orthognathic surgery for correction.

　　If you notice any symptoms suggestive of a medical condition, seek timely diagnosis and treatment, and actively cooperate with your healthcare provider. We hope this information has been helpful to you.