cementum
noun
ce·men·tum
si-ˈmen-təm 
: a specialized bony layer of connective tissue covering the dentin of the part of a tooth normally within the gum see tooth illustration
Examples of cementum in a Sentence
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Biologists and forensic scientists count cementum rings (these microscopic structures encircle a tooth's root and vary in shade and thickness by season) in teeth for the same reason.
—
Paul Smaglik, Discover Magazine, 7 Aug. 2024
For anchorage, the cementum, ligament and bone grip the tooth at its root portion that is buried under the gum.
—Samer Zaky, Discover Magazine, 10 May 2024
The ligament, a soft tissue that is about 0.2 millimeters wide (about the diameter of four hairs), attaches the cementum of the root on one end to the bone of the jaw on the other end.
—Samer Zaky, Discover Magazine, 10 May 2024
In the years sows are pregnant, their teeth will grow a thick cementum layer from gaining so much weight.
—Katie Hill, Outdoor Life, 28 Sep. 2023
Meanwhile, Matson’s boasts an extremely high level of accuracy in its cementum annuli analysis work.
—Katie Hill, Outdoor Life, 28 Sep. 2023
An annulus, or dark ring, is formed each winter between the cementum formed in spring and summer growth periods.
—Alan Clemons, Outdoor Life, 18 Mar. 2021
From the moment a tooth emerges from the gum, cementum starts to form annual layers, similar to a tree's rings.
—Jack Guy, CNN, 25 Mar. 2020
The researchers are also working with high-resolution CT scans to develop a non-destructive method of studying cementum.
—Jack Guy, CNN, 25 Mar. 2020
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Paul Smaglik, Discover Magazine, 7 Aug. 2024
For anchorage, the cementum, ligament and bone grip the tooth at its root portion that is buried under the gum.
—Samer Zaky, Discover Magazine, 10 May 2024
The ligament, a soft tissue that is about 0.2 millimeters wide (about the diameter of four hairs), attaches the cementum of the root on one end to the bone of the jaw on the other end.
—Samer Zaky, Discover Magazine, 10 May 2024
In the years sows are pregnant, their teeth will grow a thick cementum layer from gaining so much weight.
—Katie Hill, Outdoor Life, 28 Sep. 2023
Meanwhile, Matson’s boasts an extremely high level of accuracy in its cementum annuli analysis work.
—Katie Hill, Outdoor Life, 28 Sep. 2023
An annulus, or dark ring, is formed each winter between the cementum formed in spring and summer growth periods.
—Alan Clemons, Outdoor Life, 18 Mar. 2021
From the moment a tooth emerges from the gum, cementum starts to form annual layers, similar to a tree's rings.
—Jack Guy, CNN, 25 Mar. 2020
The researchers are also working with high-resolution CT scans to develop a non-destructive method of studying cementum.
—Jack Guy, CNN, 25 Mar. 2020
Cite this Entry
“Cementum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cementum. Accessed 10 Mar. 2025.
Copy CitationKids Definition
cementum
noun
ce·men·tum
si-ˈment-əm
: an outside bony layer that covers the part of the tooth normally within the gum
Medical Definition
cementum
noun
ce·men·tum
si-ˈment-əm
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