Remineralization of Slightly Etched Enamel

Abstract

Remineralization of acid-etched ground sections of enamel was studied by polarized light microscopy and microradiography. Remineralization was rapid during the first 24 hrs. and tapered off during the next 48 hrs. There was no further increase in mineral deposition after additional exposures to the calcifying solution or to saliva for periods up to 3 wks. The rate of remineralization was similar in the inorganic calcifying solution used and parotid duct saliva. Artificially produced "white spots" were less opaque upon exposure to saliva or the calcifying solution. The decreased opacity was caused by mineral deposition in the outer enamel. Penetration of "white spots" was considerably decreased after remineralization either in saliva or calcifying solution.