Cementum Annulation
Definition
The annual ring pairs visible in ground sections of the tooth root cementum, laid down one per year in normal conditions. Counting rings from the point of eruption gives an age estimate typically accurate within two to three years.
Related terms
- Aspartic Acid Racemisation
- The slow spontaneous conversion of L-aspartic acid to D-aspartic acid in the non-remodelling enamel protein. Because the rate constant is known and...
- Attrition
- The progressive loss of cases as they move through the criminal justice system: from crime committed, to reported, to recorded, to prosecuted,...
- Kvaal Method
- A non-destructive radiographic method that measures pulp-to-tooth ratios at defined reference points on periapical radiographs to estimate age from secondary dentine deposition....
- Root Transparency
- Translucency of the root dentine advancing from the apex upward, caused by mineralisation of the dentinal tubules. It is one of Gustafson's...
- Secondary Dentine
- Dentine deposited by the odontoblasts throughout adult life inside the pulp chamber, progressively reducing its volume. Visible radiographically as a narrowing of...
Explained in
- Adult Age: Gustafson, Kvaal, Cementum, RacemisationThe annual ring pairs visible in ground sections of the tooth root cementum, laid down one per year in normal conditions. Counting rings from the point of erup...