A gummy smile is a physiological feature in which the upper gingiva is excessively exposed. In a normal smile, 1-2 mm of gingiva is visible, if it is more, such a smile is called gingival smile or "gummy smile". This exposure of the mucosa is not considered a pathology, does not affect diction, chewing function and does not affect the health of the teeth.
However, studies claim that excessive exposure of the mucosa leads to lower self-esteem and psychological changes. in 25% of cases [1].
원인The gingiva is overexposed, mainly due to the structure of themaxilla (maxilla). Its overdevelopment leads to the fact that even a normal upper lip appears short and is unable to cover the mucosa fully.
Another cause is excessive lifting of the upper lip. If the circular muscles of the mouth are too strong (the medical term is "overactive"), the lip rises higher than normal. The teeth and gums may be normal in size, but the lip is just p…