Smile dynamics: A comparative study of Fijians and NZ Europeans.
Reginald KumarHisham MohammedFiona A FirthHamza BennaniJamin B HalberstadtMauro FarellaPublished in: Journal of oral rehabilitation (2024)
Smiling features of Fijians and New Zealanders showed objective differences, the most distinctive being a higher activation of the Duchenne's marker (AU6) in the Fijian group, which is regarded as a sign of smile genuineness.