Which feature is typical of tetracycline-induced tooth discoloration?

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Dentine shows more staining than enamelIt consistently occurs with enamel hypoplasiaThe discoloration appears as a dark brown shadeAffected teeth exhibit a pale yellow fluorescence under ultraviolet lightThe stains are only visible under normal lighting conditions

Explanation

Tetracycline stains are known to cause teeth to fluoresce a light yellow color when exposed to ultraviolet light, which is a distinctive characteristic. Contrary to some beliefs, the staining is more prominent in enamel than dentine, it does not always coincide with hypoplastic defects, and the coloration is typically yellowish rather than dark brown.