EFFECT OF CALCIUM LACTATE ON DEMINERALIZATION OF SYNTHETIC HYDROXYAPATITE

,

Journal of the Korean Academy of Pediatric Dentistry 1996;23(4):931-936.
Published online November 30, 1996.

EFFECT OF CALCIUM LACTATE ON DEMINERALIZATION OF SYNTHETIC HYDROXYAPATITE

유산칼슘이 합성 수산화인회석의 탈회에 미치는 영향

김대업

원광대학교 치과대학 소아치과학교실

Abstract

Many kinds of soluble calcium salts such as calcium lactate are known to reduce the enamel demineralization. In this study, calcium lactate was tested for its effect on the demineralization process of hydroxyapatite. Synthetic hydroxyapatites were used as a standardized material instead of human enamel which is rarely heterogenous. And, for the purpose of hydroxyapatite demineralization, lactic acid was used. By comparing the weight of hydroxyapatite pre-demineralization and post-demineralization, it was possible to examine the effect of calcium lactate on demineralization. The weight of demineralized hydroxyapatite was reduced by about 46% and 59% with 20mM and 40mM calcium lactate, respectively. In conclusion, low concentrations of calcium lactate showed an inhibitory effect on the demineralization of synthetic hydroxyapatite.