riso

Also known as grin, smiling, grinning

thumb|Detail of the Mona Lisa, who is known for her smilethumb|A smiling child A smile is a facial expression formed primarily by flexing the muscles at the sides of the mouth. Some smiles include a contraction of the muscles at the corner of the eyes, an action known as a Duchenne smile. Among humans, a smile expresses delight, sociability, happiness, joy, or amusement. It is distinct from a similar but usually involuntary expression of anxiety known as a grimace. Although cross-cultural studies have shown that smiling is a means of communication throughout the world, there are large differe

AI overview

A smile is a facial expression created mainly by flexing the muscles at the sides of the mouth, and it sometimes involves contracting muscles around the eyes as well. Among humans, smiles typically communicate feelings like happiness, joy, or friendliness, and are recognized as a form of communication across different cultures around the world.

AI-generated from the Wikipedia summary — may contain errors.

Research

14,349 papers

Botulinum Toxin and Smile Design.ReviewDental clinics of North America · 2022Polo MDOI: 10.1016/j.cden.2022.03.003
Capturing the smile: Exploring embodied and social acts of smiling.ReviewSociology of health & illness · 2024Kettle J, Warren LDOI: 10.1111/1467-9566.13815
[Targeting the smile: why don't we aim at the lips?].ReviewL' Orthodontie francaise · 2018Muller C, Alouini O, Chouvin MDOI: 10.1051/orthodfr/2018003
Smile microesthetics as perceived by dental professionals and laypersons.The Angle orthodontist · 2022Alomari SA, Alhaija ESA, AlWahadni AM et al.DOI: 10.2319/020521-108.1
The esthetics of the smile: a review of some recent studies.ReviewThe International journal of prosthodontics · 1999Dong JK, Jin TH, Cho HW et al.
Smile dimensions affect self-perceived smile attractiveness.Scientific reports · 2021Horn S, Matuszewska N, Gkantidis N et al.DOI: 10.1038/s41598-021-82478-9
Smile psychology.ReviewCurrent opinion in cosmetic dentistry · 1994Cortés M, Gaudino D
Dose and injection site of botulinum toxin type A for gummy smile management: A systematic review and bibliometric analysis.Toxicon : official journal of the International Society on Toxinology · 2024Wang X, Zou Y, Yuan M et al.DOI: 10.1016/j.toxicon.2024.108058

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Wikidata facts

Instance of: emotional expression
Image: [email protected] Strichfigur 22.svg

Show 4 more facts

Unicode character: 🙂
hashtag: smile
Commons category: Smiling
described by source: Explanatory Dictionary of the Living Great Russian Language

Sources (3)

via Wikidata · CC0

Article · Português

Riso ou sorriso é uma expressão facial decorrente da contração dos músculos das extremidades da boca. Nos animais, um sorriso é frequentemente usado como uma ameaça (mostrando dentes) ou como um sinal de submissão. Entre os humanos o sorriso é uma expressão facial que é sempre criada perto dos cantos da boca, Guillaume Duchenne distinguiu dois tipos: o real e o falso, sendo o primeiro caracterizado pelo esticando os e também ao redor dos olhos. Nos humanos, o sorriso é geralmente uma expressão de alegria ou boa vontade, mas também pode ser uma expressão descontrolada de ansiedade (sorriso nervoso). O estudo do humor, do riso e de seus efeitos psicológicos e fisiológicos no corpo humano é denominado gelotologia. O simples ato de sorrir mobiliza diversos músculos faciais, denominados músculos da mímica facial: * Bucinador * Risório * * Orbicular dos lábios * * Masseter (ou masseterino)

Abstract from DBpedia / Wikipedia · CC BY-SA