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Questions and Answers
What is the main function of acellular cementum?
What is the main function of acellular cementum?
- Providing attachment for the tooth (correct)
- Adaptive role in response to tooth wear
- Anchoring the tooth to the alveolar bone
- Repairing damaged tooth structure
What is the composition of cementum similar to?
What is the composition of cementum similar to?
- Enamel
- Bone (correct)
- Pulp cells
- Dentin
What is the thickness range of cellular cementum?
What is the thickness range of cellular cementum?
- $150-200$ µm (correct)
- $200-250$ µm
- $20-50$ µm
- $100-150$ µm
What is the origin of the collagenous fibers in cementum?
What is the origin of the collagenous fibers in cementum?
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What initiates the process of cementogenesis (cementum formation)?
What initiates the process of cementogenesis (cementum formation)?
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Study Notes
Acellular Cementum Functions
- Main role is to anchor periodontal fibers, providing stability and support to teeth.
- Assists in attaching the tooth to the alveolar bone.
Composition of Cementum
- Similar to bone in that it has a mineralized structure.
- Comprised mainly of hydroxyapatite, collagen fibers, and water, maintaining a balance necessary for tooth health.
Thickness of Cellular Cementum
- Thickness varies between 30 to 400 micrometers.
- Generally thicker at the apex and furcation areas of teeth.
Origin of Collagenous Fibers
- Derived primarily from periodontal ligament (PDL) fibroblasts.
- Serve as a scaffolding, providing tensile strength and support to the cementum matrix.
Process of Cementogenesis
- Initiated by dental epithelial cells through signals that promote the differentiation of cementoblasts.
- Involves the deposition of collagen fibers and mineralization of the cementum matrix.
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Description
Test your knowledge of the periodontium, the tissues supporting and investing the tooth. Learn about cementum, periodontal ligament, alveolar bone, and gingiva facing the tooth.
