Effect of the Ca~2+ and PO~3- _4 ion flow on the lengthwise growth of octacalcium phosphate in a model system of enamel crystal formation with controlled ionic diffusion

摘要

An amount of Ca~2+ and P)~3- _4 ions transported into the enamel matrix change during tooth enamel crystals formation. Effects of the Ca~2+ and PO~3- _4 ion flow on the lengthwise growth of octacalcium phosphate were studied at 37 deg. C and at pH 6.5 in a model system of tooth enamel formation, where a cation selective membrane and a dialysis membrane were used to control the ionic diffusion. An amount of Ca~2+ and PO~3- _4 ions that flow into the reaction space between the membranes was changed by using 5, 10, 30 mM Ca and PO_)4 solutions as ionic sources.