Maxillary Anterior Teeth Dimensions: A Biometric Analysis in a Kuwaiti Population

Area of Science:

• Dental Anthropology
• Esthetic Dentistry
• Restorative Dentistry

Background:

• Maxillary anterior tooth dimensions are crucial for esthetic and restorative dental procedures.
• Limited data exists for specific populations, and sex-related differences in tooth dimensions are often underreported.
• Existing reference values may not be universally applicable.

Purpose of the Study:

• To examine the clinical crown width, length, and width/length ratio of maxillary central incisors, lateral incisors, and canines in a Kuwaiti adult population.
• To evaluate sex-related differences in these tooth dimensions.

Main Methods:

• Obtained 3D resin models from 126 healthy adult participants (84 female, 42 male).
• Measured mesiodistal width (w) and clinical crown length (l) using a digital caliper.
• Calculated the width/length (w/l) ratio and assessed sex differences using independent sample t-tests.

Main Results:

• Mean crown widths ranged from 6.83 ± 0.52 mm (laterals) to 8.83 ± 0.65 mm (centrals).
• Mean crown lengths ranged from 8.00 ± 0.60 mm (laterals) to 9.83 ± 0.72 mm (centrals).
• Statistically significant sex differences were found in crown length (p < 0.001) and w/l ratio (p < 0.001) for all anterior teeth, with males having longer crowns and females having higher w/l ratios.

Conclusions:

• Ethnicity and sex significantly influence maxillary anterior tooth dimensions.
• Females showed higher width/length ratios, while males had greater crown lengths and canine widths, indicating notable sexual dimorphism.
• Population- and sex-specific reference values are essential for guiding esthetic and restorative dental treatments.