Disturbances and noise: Defining furrow-form enamel hypoplasia

Area of Science:

• Bioarchaeology
• Paleopathology
• Human Evolution

Background:

• Dental enamel microstructures record childhood growth disruptions, offering insights into past population health.
• Enamel hypoplasia, a visible defect, is sensitive to nutritional stress and disease during development.
• Accurate identification of enamel defects is crucial for reconstructing past human health and living conditions.

Observation:

• A novel 3D imaging technique using an Alicona microscope was employed to analyze enamel incremental microstructures.
• Perikymata spacing profiles were constructed from human permanent mandibular lateral incisors from Neolithic Çatalhöyük.
• This method allows for precise measurement and analysis of developmental features within the enamel.

Findings:

• Three distinct enamel defects were identified visually and confirmed metrically using the 3D technique.
• The study presents a mathematical basis for detecting spacing anomalies indicative of enamel hypoplasia.
• The combined visual-metric approach significantly advances previous methods for defect identification.

Implications:

• Standardizing enamel hypoplasia detection reduces subjectivity in bioarchaeological health assessments.
• This methodology provides a more reliable tool for identifying growth disruptions in past populations.
• Further research using this technique can enhance our understanding of human growth and health in historical contexts.