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This study aims to assess the validity of maxillary intra-incisor-canine width as a method for determining biological sex.

Validity of Maxillary Intra-incisor–Canine Width as a Novel Indicator for Sex Determination

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Cross-sectional study evaluates intra-incisor-canine width for sex determination in adults, suggesting its use in forensics.

This study aims to assess the validity of maxillary intra-incisor-canine width as a method for determining biological sex.
Cross-sectional design involving 60 adults with Angle Class I occlusion.
Measured maxillary dental impressions and bite marks.
Calculated intercanine and intermolar widths alongside incisor-to-canine distances.
Performed statistical analyses including t-tests, correlations, and logistic regression.
Significant sexual dimorphism found in intermolar width with p = .009.
Iincisor-to-canine width differed significantly between sexes (p < .001).
Odds of being male increased by 2.67 times per 1 mm increase in incisor-to-canine width.
Achieved 91.7% classification accuracy for sex determination.

Ali et al. (2026) studied this question.

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