title: The study of human dentine with secondary ion microscopy and electron diffraction.
abstract: The highly polished surface of serial transverse ground sections of human coronal dentine were coated under vacuum with an aluminium grid and studied with a SMI 300 ion microanalyser (Cameca, Paris) based on mass spectrography. Secondary ion microscopy demonstrated a qualitative distribution of calcium, phosphorus, magnesium, sodium and potassium. A higher content in Ca, P and Mg was noted in peritubular dentine. Selective area electron diffreaction patterns of this zone, using LiF as standard, showed the presence of whitlockite in peritubular dentine where about 1% in weight of magnesium seemed to be incorporated.
mesh_terms: D000293:Adolescent; D002118:Calcium / Q000032:analysis; D002130:Calcium Phosphates / Q000032:analysis; D003804:Dentin / Q000032:analysis* / Q000648:ultrastructure; D006801:Humans; D008274:Magnesium / Q000032:analysis; D010758:Phosphorus / Q000032:analysis; D011188:Potassium / Q000032:analysis; D012964:Sodium / Q000032:analysis
chemical_list: D002130:Calcium Phosphates; D010758:Phosphorus; D012964:Sodium; D008274:Magnesium; D011188:Potassium; D002118:Calcium