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Hunter-Schreger Bands
Examining a ground longitudinal section of the tooth with reflected rather than transmitted light, alternating light and dark bands appear in the enamel. This pattern is called Hunter-Schreger bands (A). They extend from the D-E junction (B) through about 2/3's of the enamel thickness and disappear in the outer 1/3. The bands are not commonly observed in the incisal or occlusal regions of enamel. Hunter-Schreger bands reflect the alternating direction taken by groups of enamel rods as they moved away from D-E junction during formation. What is C in this image? (look at C to check your answer).
Legend
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A - Hunter-Schreger bands |
C - dead tracts of dentin |
Lecture Notes
