Electron probe micro-analysis of human dental pulp stones.
The mineral composition of ten human dental pulp stones presenting various morphological aspects has been studied by electron probe micro-analysis. The denticles were composed of two major chemical elements: Ca and P with mean concentrations 32.12% and 14.69% respectively giving a Ca/P weight ratio of 2.19 which is very close to the weight ratio of pure stoichiometric hydroxyapatite (2.15). The concentration of some other elements was much lower (0.88% for F; 0.75% for Na; 0.51% for Mg). The other analysed constituents (K, Cl, Mn, Zn, Fe) were present at trace concentrations. The mineral composition of sound human dentine from one tooth containing a pulpal calcification was also analysed for comparative purpose.
Le May
O
O
Laboratoire d'Anatomie Pathologique, Faculté de Chirurgie Dentaire, Université Paris V, Montrouge, France.
Kaqueler
J C
JC
D002118:Calcium / Q000032:analysis; D003784:Dental Pulp Calcification / Q000378:metabolism* / Q000473:pathology; D004577:Electron Probe Microanalysis; D006801:Humans; D008903:Minerals / Q000032:analysis*; D010758:Phosphorus / Q000032:analysis
D008903:Minerals; D010758:Phosphorus; D002118:Calcium