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1980 (1)
1979 (1)
1Author    F.C M Driessens, J.W E Van Dijk, J.M P M BorggrevenRequires cookie*
 Title    Empirical Border Lines of the Apatite Stability Field in the System CaO—P20 5—H 20 —N aaO—C 0 2—MX at Room Temperature  
 Abstract    Literature data on equilibria between solid calcium phosphates having the apatite structure and aqueous solutions containing Na+ and C 0 32-ions were reexamined in view of the present data about the complexation of ions in such systems. Recalculations showed that all solutions were undersaturated or just saturated with respect to either brushite or octocalciumphosphate or more or less finely dispersed calcite and supersaturated with respect to pure hydroxylapatite. Sections through the quasi-sextary phase diagram were constructed which are representative for the system under simulated in vivo conditions. 
  Reference    Z. Naturforsch. 34c, 165 (1979); received December 27 1978 
  Published    1979 
  Keywords    Calcium Phosphate, Apatite Solubility, Sodium Incorporation, Carbonate Incorporation 
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 TEI-XML for    default:Reihe_C/34/ZNC-1979-34c-0165.pdf 
 Identifier    ZNC-1979-34c-0165 
 Volume    34 
2Author    F.C M Dnessens, R.M H VerbeeckRequires cookie*
 Title    Evidence for Intermediate Metastable States during Equilibration of Bone and Dental Tissues  
 Abstract    Experimental data were collected on the solubility equilibrium of the mineral of bone, tooth enamel and calcium phosphate renal stones. Evaluation in the form of potential diagrams of Ca(OH) 2 versus H3P 0 4 shows that Ca/P ratios of 1, 4/3, 10/7, 3/2 and 5/3, related to phases like brushite, octocalcium phosphate, whitlockite, defective apatite and hydroxyapatite respectively can be important. These facts allow the interpretation that many of these calcium phosphates are present simultaneously in biominerals or that they are formed during the equilibration. 
  Reference    Z. Naturforsch. 35c, 262 (1980); received December 27 1979 
  Published    1980 
  Keywords    Calcium Phosphates, Solubility, Bone, Dental Enamel 
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 TEI-XML for    default:Reihe_C/35/ZNC-1980-35c-0262.pdf 
 Identifier    ZNC-1980-35c-0262 
 Volume    35