Editing Smile (section)

== Dimples ==
[[File:VirgilGriffithFace.jpg|thumb|A man with cheek [[dimples]] smiling.]]
[[Dimple|Cheek dimples]] are formed secondary to a bifid [[Zygomaticus major muscle|zygomaticus major]] muscle, whose fascial strands insert into the dermis and cause a dermal tethering effect.<ref>{{Cite journal |last1=Lari |first1=A. R. |last2=Panse |first2=Nikhil |date=January 2012 |title=Anatomical basis of dimple creation - A new technique: Our experience of 100 cases |journal=Indian Journal of Plastic Surgery|volume=45 |issue=1 |pages=89–93 |doi=10.4103/0970-0358.96593 |issn=1998-376X |pmc=3385407 |pmid=22754160 |doi-access=free }}</ref>  Dimples are genetically inherited and are a dominant trait.<ref>{{Cite journal |last1=Chalathadka |first1=Mahabaleshwara |last2=Shankar |first2=K Kiruba |last3=Lakshmi |first3=G Vijaya |last4=Nithin |first4=VM |last5=Kulkarni |first5=Sneha |last6=Firdousbano |first6=Mulla |date=2019 |title=Evaluation of Prevalence and Morphology of Dimple among Population of Sullia Taluk |journal=Journal of Cutaneous and Aesthetic Surgery |volume=12 |issue=4 |pages=227–230 |doi=10.4103/JCAS.JCAS_109_19 |issn=0974-2077 |pmc=6967164 |pmid=32001967 |doi-access=free }}</ref> Having bilateral dimples (dimples in both cheeks) is the most common form of cheek dimples.<ref name="surgery">{{cite journal|last1=Almaary|first1=Hayaat F.|last2=Scott|first2=Cynthia|last3=Karthik|first3=Ramakrishnan|title=New Landmarks for the Surgical Creation of Dimples Based on Facial Form|journal=The Journal of Clinical and Aesthetic Dermatology|volume=11|issue=5|pages=22–26|pmc=5955629|year=2018|pmid=29785234}}</ref> A rarer form is the single dimple, which occurs on one side of the face only.

This bifid variation of the muscle originates as a single structure from the [[zygomatic bone]]. As it travels anteriorly, it then divides with a superior bundle that inserts in the typical position above the corner of the mouth. An inferior bundle inserts below the corner of the mouth. Dimples are [[analogy (biology)|analogous]] and how they form in cheeks varies from person to person. The shape of a person's face can affect the look and form as well:<ref name="surgery"/> leptoprosopic (long and narrow) faces have long and narrow dimples, and eryprosopic (short and broad) faces have short, circular dimples.<ref name="surgery"/> People with a mesoprosopic face are more likely to have dimples in their cheeks than any other face shape.<ref name="surgery"/>