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Questions and Answers
What do the lines of Retzius in enamel represent?
What do the lines of Retzius in enamel represent?
- Blood vessels
- Incremental growth lines (correct)
- Nerve endings
- Inflammatory cells
In what direction do the lines of Retzius run in the enamel?
In what direction do the lines of Retzius run in the enamel?
- Vertical, from the enamel to the dentin
- Horizontal, parallel to the occlusal surface
- Oblique, toward the occlusal surface (correct)
- Curved, following the curvature of the tooth
Which part of the tooth has gnarled enamel for resistance against masticatory forces?
Which part of the tooth has gnarled enamel for resistance against masticatory forces?
- Gingival margin
- Cervical area
- Cusp and incisal edges (correct)
- Interdental papilla
What is the purpose of enamel being thickest over areas of greatest impact?
What is the purpose of enamel being thickest over areas of greatest impact?
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Which structure appears as concentric rings in a cross-section similar to annual rings of a tree?
Which structure appears as concentric rings in a cross-section similar to annual rings of a tree?
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What is the role of the perikymata in the enamel structure?
What is the role of the perikymata in the enamel structure?
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What is the function of the bands of Hunter-Schreger in enamel?
What is the function of the bands of Hunter-Schreger in enamel?
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What distinguishes Type C lamellae from Type A and B lamellae?
What distinguishes Type C lamellae from Type A and B lamellae?
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Where are enamel tufts typically distributed?
Where are enamel tufts typically distributed?
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What causes the dark appearance of enamel spindles?
What causes the dark appearance of enamel spindles?
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Why do cracks occur in enamel?
Why do cracks occur in enamel?
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What is the significance of the neonatal line in dental anatomy?
What is the significance of the neonatal line in dental anatomy?
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