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Journal for Biophysical Chemistry

Table 2 Electrical surface potentials of tooth enamel surfaces obtained by fitting the experimental force curves to the DVLO theory under constant potential assumption

From: The Role of Enamel Proteins in Protecting Mature Human Enamel Against Acidic Environments: A Double Layer Force Spectroscopy Study

Sample/medium

Surface potential, (mV)

Surface charge, (C/m2)

As received enamel in SAGF, pH 6.8

−70 ± 3

−0.0064

As received enamel in SAGF, pH 4.2

−120 ± 4

−0.0102

Deproteinated enamel in SAGF, pH 6.8

−35 ± 2

−0.0032

Deproteinated enamel in SAGF, pH 4.2

+10 ± 2

0.0009