The article reveals the indicators of Laser Doppler Flowmetry of the tooth pulp and densitometry in young people aged 20-30, with dentine caries. 106 teeth of the chewing group of the upper and lower jaw were examined (30 intact teeth and 86 teeth with dentin caries). The indicators of Laser Doppler Flowmetry of the tooth pulp and densitometry of teeth affected by dentine caries (class II according to Black) were determined. A significant decrease in the densitometric parameters of the dentin of teeth affected by caries, as well as a significant increase in the parameters of Laser Doppler Flowmetry of the tooth pulp in dentin caries, was determined. According to the data of Laser Doppler Flowmetry of the tooth pulp, an improvement in blood circulation parameters was determined in both groups. However, in group 1, the indicators were unreliable, and in group 2, after 12 months, the level of capillary blood flow (M) improved by 1.3 times, the intensity of blood flow (σ) increased by 1.5 times, the vasomotor activity of microvessels (KV) - by 1.9 times, and also approached the norm.