Striae of Retzius - Qualities

Qualities

Lines of Retzius (think age bands like tree growth rings) – Stria (A)

  • artifacts in enamel (not found in dentin) created by incremental steps of ameloblasts
  • comparable to the contour "lines of Owen" in dentin
  • have increased organic content and show the variations in rhythm as the tooth enamel matrix calcifies
  • follow an appositional or side-by-side growth pattern

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