Related Experiment Video
Updated: May 19, 2026
07:57
Sampling and Pretreatment of Tooth Enamel Carbonate for Stable Carbon and Oxygen Isotope Analysis
Published on: August 15, 2018
Age estimation using tooth cementum annulation
1Anthropologie, Medizische Fakultat der Albert Ludwigs, Universitat Frieberg, Freiburg, Germany. ursula.wittwer-backofen@uniklinik-freiburg.de
Methods in Molecular Biology (Clifton, N.J.)
|August 22, 2012
Summary
Tooth cementum annulation (TCA) is a reliable forensic anthropology method for estimating age in unidentified individuals. By analyzing microscopic layers in tooth cementum, TCA offers a narrow error range for age determination in adults.
Area of Science:
- Forensic Anthropology
- Bioarchaeology
- Paleopathology
Background:
- Accurate age estimation is crucial for identifying unidentified human remains.
- Tooth cementum annulation (TCA) is an established anthropological method for age assessment.
- TCA offers a narrow error range, potentially within 5 years for adults.
Purpose of the Study:
- To detail the methodology and application of tooth cementum annulation (TCA) in forensic age estimation.
- To highlight the importance of TCA in the identification of unidentified bodies.
Main Methods:
- Histological preparation of transversal tooth root sections.
- Analysis of cementum apposition layers using transmitted light microscopy.
- Age estimation by adding mean tooth eruption age to counted annual layers.
Main Results:
- TCA relies on the differential density of cementum layers deposited seasonally.
- Microscopic analysis reveals distinct dark and bright layers representing annual increments.
- Reliable age estimation requires analysis of multiple teeth and corroboration with other methods.
Conclusions:
- Tooth cementum annulation is a valuable and precise method for age diagnosis in forensic anthropology.
- Standardized preparation protocols are still developing, requiring adaptation to individual tooth conditions.
- Cross-validation with other techniques enhances the reliability of TCA-based age assessments in forensic casework.
Related Concept Videos
01:15Teeth
The formation of teeth, also known as odontogenesis, is a complex process that begins in utero, around the sixth week of embryonic development. There are three stages to this process: the bud stage, the cap stage, and the bell stage.
In the bud stage, the tooth germ (an aggregation of cells) starts to form in the developing jawbone. During the cap stage, the tooth germ differentiates into enamel organ, dental papilla, and dental sac, which will later develop into the tooth's enamel, dentin and...
In the bud stage, the tooth germ (an aggregation of cells) starts to form in the developing jawbone. During the cap stage, the tooth germ differentiates into enamel organ, dental papilla, and dental sac, which will later develop into the tooth's enamel, dentin and...
01:21Tooth Anatomy
The human tooth enables us to eat a variety of foods, speak clearly, and even aid in shaping our faces. Teeth are composed of various elements that work together. Here's a detailed look at the anatomy of a human tooth.
The Crown, Neck, and Root
The visible part of the tooth is referred to as the crown. It's covered by enamel, the hardest substance in the human body. The crown is uniquely shaped for each type of tooth, allowing for different functions such as cutting, tearing, or grinding food.
The Crown, Neck, and Root
The visible part of the tooth is referred to as the crown. It's covered by enamel, the hardest substance in the human body. The crown is uniquely shaped for each type of tooth, allowing for different functions such as cutting, tearing, or grinding food.