[De- and remineralization processes of the surface layer of the enamel in intact and pulp-extirpated teeth].

Clinico-laboratory investigation of 61 intact teeth and 61 teeth after pulp extraction was performed, including in vivo acid enamel biopsy and intravital staining with 2% methylene blue solution. The regularities were established governing Ca and P efflux from superficial enamel layer of intact and pulp-extracted teeth into the acid solution with respect to age, group of the tooth and pulp extraction terms. The pulp extraction factor was investigated with special reference to the tooth acid resistance and its remineralization rate.