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Smile lines often form over time due to “repeated folding of the skin on the side of the mouth from smiling and facial movement,” says Joshua Zeichner, M.D., director of cosmetic and clinical ...
The nasolabial folds, commonly known as "smile lines" [1] or "laugh lines", [2] [self-published source] are facial features. They are the two skin folds that run from each side of the nose to the corners of the mouth. They are defined by facial structures that support the buccal fat pad. [3] They separate the cheeks from the upper lip.
Smile surgery or smile reconstruction is a surgical procedure that restores the smile for people with facial nerve paralysis. Facial nerve paralysis is a relatively common condition with a yearly incidence of 0.25% leading to function loss of the mimic muscles. [1] The facial nerve gives off several branches in the face.
This study found that open-mouth smiles can easily be mistaken for a sign of fear or contempt—the two lowest rated smiles were both pretty toothy. Better to go with no teeth, or just show your ...
The vermilion border (sometimes spelled vermillion border), also called margin or zone, is the normally sharp demarcation between the lip and the adjacent normal skin.It represents the change in the epidermis from highly keratinized external skin to less keratinized internal skin.
The aesthetic ideal of a mouth with youthful lips—shaped like a lozenge—features an upper lip with a pronounced Cupid's bow, and much fullness to each lip; however, such an ideal physiognomy declines with age, and the lips shrink and lose anatomic definition, as the lips sag, which affects the aesthetics of the smile, by revealing less of the teeth during a relaxed smile.
In facial expression, this mouth line is iconically shaped like an up-open parabola in a smile, and like a down-open parabola in a frown. A down-turned mouth means a mouth line forming a down-turned parabola, and when permanent can be normal. Also, a down-turned mouth can be part of the presentation of Prader–Willi syndrome. [4]
Marionette lines appear with advancing age, but some people never get them, depending on facial structure and anatomy. They tend to appear as the ligaments around the mouth and chin relax and begin to loosen and sag, and fatty tissues of the cheek deflate and descend during the aging process.
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