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  • Living tissue
  • Peritubular dentine
  • Intertubular dentine
  • Apatite crystals
  • Intermolecular cross-linking
  • Defense reaction in dentine
    • A defence reaction takes place in the dentine.
    • Dissolution alters the hydroxyapatite crystals.
    • Crystals with a lower hardness and a lower calcium density (= whitelockite)  remain.
    • The dentine tubules are blocked by precipitated intratubular whitelockite  crystals.                               cont’d

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