Dimple Creation

Dimples are usually located on mobile tissue, and are possibly caused by variations in the structure of the facial muscle known as zygomaticus major. Specifically, the presence of a double or bifid zygomaticus major muscle may explain the formation of cheek dimples. 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.
Cheek dimples can occur in any person, but some studies have suggested that dimples (both cheek and chin) are more common in females. They can be either permanent, or transient (aging makes dimples appear/disappear due to facial development and muscle growth) a Greek study spanning almost 20 years concluded that 34% of Greek adults had dimples whereas 13% of Greek youths (between 7 and 15 years old) had dimples as well, which might suggest that transient dimples are more common than permanent.