Dentin samples were covered with self-adhesive cements and studied for surface morphol. by scanning electron microscopy and for distribution of Ca, P, C, O and Mg by electron diffraction spectroscopy. Analogical dentin samples were preliminarily covered with self-etching adhesives, then with the cements and studied for shearing strength after curing. Use of the self-etching resulted in creasing the shearing strength of the bonds.