When examining a ground section of a tooth from a 40-year-old human, optically dense, spindle-shaped linear structures—extending up to one-third of the enamel thickness—are observed at the dentino-enamel junction. What structures has the researcher identified?
- A Enamel spindles
- B Denticles
- C Enamel tufts
- D "Dead" tracts
- E Carious lesion
Правильна відповідь: A. Enamel spindles
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