Anatomical factors associated with gender recognizability: A study on intraoral standardized photographs

Stefano Corbella, Alice Alberti, Martina Muzzarelli, Beatrice Zotti, Silvio Taschieri, Luca Francetti

Research output: Contribution to journalArticlepeer-review


AIM: The aim of this research was to evaluate the possibility of identifying the sex of 1 subject through visual assessment of a frontal photograph of dentition, and to investigate if some morphological characteristics are related to sex determination.

METHODS: 5 expert dentists, 5 non-expert dentists and 5 laypeople were made to watch 100 intraoral photographs for 5 seconds each and to establish their sex. The responses of the participants and the baseline characteristics of photographed dentitions were analyzed.

RESULTS: The proportion of right answers was 56.0% ± 8.2% in the group of expert dentists, 65.0% ± 6.0% in the group of non-expert dentists and 58.6% ± 4.5% in the group of non-expert people. The round shape of maxillary central incisors was related to the female gender (P = .006). The male condition was correlated with poor oral hygiene for 4 observers. Female sex perception was correlated with round morphology of upper central incisors for 3 observers.

CONCLUSION: No difference in the ability to determine the sex was registered among groups, suggesting that sex perception is not strongly influenced by the characteristics of dentition.

Original languageEnglish
Article numbere12476
JournalJournal of investigative and clinical dentistry
Issue number4
Publication statusPublished - Dec 2019


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