Root number determination in maxillary first premolars for modern human populations

Area of Science:

• Anthropology
• Forensic Science
• Anatomy

Background:

• The number of roots in the maxillary first premolar is an important trait.
• Variations in root morphology can impact population characterization and forensic identification.

Purpose of the Study:

• To establish a clear definition for multiple root numbers in the maxillary first premolar.
• To improve the comparability of findings among different observers.

Main Methods:

• Analysis of root bifurcation in maxillary first premolars.
• Defining a threshold for root bifurcation based on root length.

Main Results:

• A proposed definition for multiple roots based on lingual and buccal-root bifurcation exceeding 25%--33% of the buccal-root length.
• This definition offers pragmatic considerations for consistent observation.

Conclusions:

• The proposed definition enhances the comparability of between-observer findings.
• This trait is potentially important for population characterization, forensic identification, and microevolutionary analysis.