Diagnosis and Treatment Approaches to a "Gummy Smile".

Excessive gingival display or "gummy smile" is a growing concern to dental patients and often considered detrimental to an esthetic smile. Gingival display of more than 4 mm of gingiva is considered by many to be unattractive. The cause of the gummy smile can be multifactorial and must be accurately diagnosed to render appropriate treatment. Factors that contribute to the gummy smile include altered passive eruption, lip length, lip hypermobility, incisal wear/crown length, and vertical maxillary excess and gingival hyperplasia. The purpose of this article is to review the etiology, diagnosis, and surgical approaches in treating the gummy smile.