cementum annuli

A Photo Gallery of Jawbones From Extremely Old Deer

Apr 30, 2025 Lindsay Thomas Jr.

The longer deer live, the more they wear down their teeth from chewing forage and browse. It used to be that hunters could only age extremely worn deer jaws as “5½-plus” or some variation of…

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Which Deer Aging Technique is More Accurate, Jawbone or Cementum?

Sep 20, 2023 Kip Adams

There are two methods hunters can use to estimate the age of harvested deer, and both rely on deer teeth. There is a lot of misunderstanding, misapplication, and misinformation shared about these valuable deer management…

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Estimating Deer Age with Cementum Annuli

Oct 12, 2012 NDA Staff

The cementum annuli (CA) aging technique is based on the annual addition of cementum, a specialized calcified substance deposited on the roots of teeth in many mammals. Layers of cementum produce “rings” similar to those…

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