cementum
/səˈmɛntəm/
noun
- A hard, bonelike tissue that covers the root of a tooth and helps anchor it in the jaw.
- Cementum protects the tooth root and attaches it to the periodontal ligament.
- Dentists examine the cementum for signs of gum disease or erosion.
- Damage to the cementum can lead to tooth sensitivity or loosening.