What does this research mean for the field?

Metric dental measurements, including mesiodistal and buccolingual dimensions, are effective for identifying sex differences in a Brazilian population, whereas non-metric dental traits exhibit limited sexual dimorphism. Novelty: ClaimNovelty.CONFIRMATORY. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To assess the presence of sexual dimorphism in a Brazilian population using metric and non-metric dental crown characteristics of the maxilla.

August 30, 2026

Sexual dimorphism based on metric and non-metric parameters of human teeth in a Brazilian population.

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Authors

WRWagner Costa RossiUniversidade Federal de Alfenas AEAlessandra EstevesUniversidade Federal de Alfenas DNDenismar Alves NogueiraUniversidade Federal de Alfenas

Discussion

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Implication

Observational study reveals significant dental crown size differences between sexes in young adults, suggesting metric traits outperform non-metric features for forensic sex estimation.

Key Points

To assess the presence of sexual dimorphism in a Brazilian population using metric and non-metric dental crown characteristics of the maxilla.
Evaluated the maxillary teeth of 73 individuals aged 18 to 25 years in Brazil.
Measured buccolingual and mesiodistal crown dimensions, maxillary dental arch perimeter, and intercanine distance, while recording non-metric morphological traits using ASUDAS.
Assessed intraobserver error with the paired t-test and Dahlberg method, applying parametric or non-parametric tests based on data normality.
Mesiodistal and buccolingual tooth dimensions effectively differentiated sexes, with maxillary arch perimeter and intercanine distance significantly larger in males.
Mesiodistal dimensions for teeth 12/22 and buccolingual dimensions for teeth 13/23 demonstrated no significant sex differences.
Non-metric traits were less discriminatory, with dimorphism observed only for the lingual tubercle (tooth 22), mesial marginal ridge tubercle (tooth 26), and hypocone cusp (teeth 17 and 27).

Cite This Study

Rossi et al. (2026) studied this question.

synapsesocial.com/papers/6a93f1056c1a8fb52e79db2a https://doi.org/10.5281/zenodo.21848953

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Implication

Observational study reveals significant dental crown size differences between sexes in young adults, suggesting metric traits outperform non-metric features for forensic sex estimation.

Sexual dimorphism based on metric and non-metric parameters of human teeth in a Brazilian population.

Discussion

Member takes

Implication

Key Points

Cite This Study

Sexual dimorphism based on metric and non-metric parameters of human teeth in a Brazilian population.

Discussion

Member takes

Implication

Key Points

Cite This Study

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