Zusammenfassung:
<jats:p> The calcium and phosphorus weight concentrations as well as the calcium/phosphorus weight ratio were determined by electron probe microanalysis both peritubularly and intertubularly in the dentine of 25 adults of varying age and sex, originating from our autopsy material. </jats:p><jats:p> The studies were performed with a TESLA BS-300 scanning electron microscope coupled with an EDAX-149-10 X-ray detector and a BMG-38100 X-ray analyser with an accelerating potential of 15 kV, a sample current of 100 pA and a measurement time of 20 s. </jats:p><jats:p> Peritubularly the Ca/P weight ratio of the hyper-mineralized part of the dentine decreases with age and is in close correlation with it (r = − 0.9052) and this tendency is significant even at the level of 95% (P < 0.05). </jats:p><jats:p> The equation of the regression line is: [Formula: see text] </jats:p><jats:p> where x is the age and y is the Ca/P weight ratio. </jats:p><jats:p> The weight concentration of phosphorus is in an even closer correlation with age (r = 0.9712) and this correlation is also significant (P < 0.01). The equation of the regression line is the following: [Formula: see text] </jats:p><jats:p> The close correlation of both the Ca/P weight ratio of the teeth and of the phosphorus weight concentration with the age allows individual age determination to be performed in the course of forensic medical and palaeoanthropological studies. </jats:p>
Beschreibung:
<jats:p> The calcium and phosphorus weight concentrations as well as the calcium/phosphorus weight ratio were determined by electron probe microanalysis both peritubularly and intertubularly in the dentine of 25 adults of varying age and sex, originating from our autopsy material. </jats:p><jats:p> The studies were performed with a TESLA BS-300 scanning electron microscope coupled with an EDAX-149-10 X-ray detector and a BMG-38100 X-ray analyser with an accelerating potential of 15 kV, a sample current of 100 pA and a measurement time of 20 s. </jats:p><jats:p> Peritubularly the Ca/P weight ratio of the hyper-mineralized part of the dentine decreases with age and is in close correlation with it (r = − 0.9052) and this tendency is significant even at the level of 95% (P < 0.05). </jats:p><jats:p> The equation of the regression line is: [Formula: see text] </jats:p><jats:p> where x is the age and y is the Ca/P weight ratio. </jats:p><jats:p> The weight concentration of phosphorus is in an even closer correlation with age (r = 0.9712) and this correlation is also significant (P < 0.01). The equation of the regression line is the following: [Formula: see text] </jats:p><jats:p> The close correlation of both the Ca/P weight ratio of the teeth and of the phosphorus weight concentration with the age allows individual age determination to be performed in the course of forensic medical and palaeoanthropological studies. </jats:p>