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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.
The Lip position would contract the orbicularis oris muscle, resulting in a frown. The Teeth position would cause the zygomaticus major or the risorius muscle, resulting in a smile. The control group would hold the pen in their nondominant hand. All had to fill a questionnaire in that position and rate the difficulty involved.
The zygomaticus major muscle raises the upper lip to bare the upper teeth. It additionally deepens and raises the nasolabial furrow. Acting in conjunction with other muslces of facial expression that elevate the lip, it curls the upper lip to produce facial expressions such as smiling, disdain, contempt, or smugness.
Lip lines and forehead lines can also develop from laughing and smiling or chewing and puckering — like if you smoke cigarettes or drink most of your water out of a straw. Wrinkles on the ...
Underneath skin of lower lip Opening mouth and sliding lower jaw left and right: Lower jaw: Depression, lateral: Depressor angulus oris: Mandible: Underneath skin at corners of mouth Smiling: Corners of mouth: Lateral elevation: Zygomaticus major: Zygomatic bone: Underneath skin at corners of mouth (dimple area), orbicularis oris: Shaping of ...
It is difficult to determine exactly how many muscles are involved in smiling or frowning as there is a wide range of facial expressions that might be considered a frown or a smile. At minimum ten muscles are required to smile in which only the upper lip and corners of the mouth are lifted. [17]
Instead, Dr. Danda offers up these phrases: “Happy you’re home,” “Glad you’re back,” or “I’m happy to see your smiling face.” “Parents can also make observations about ...
Supermodel Smile: Gigi Hadid’s Go-To Lip Plumping Gloss Is Only $7. Suzy Forman. Updated July 29, 2023 at 9:49 PM.