[Experimental-morphological studies on isolation properties of cyanacrylate composite inlays].

The biological tolerance and protective properties of inlays from cyanacrylate composites versus the toxic effect of the composition material have been studied in experiments on dogs. Three polymer compositions were tested in comparison with the widely used phosphate cement. For the purpose of the study, 60 cavities, class V, size 2:4:2.5 mm were treated. Dentin was covered with inlays from experimented materials and the cavities were obturated by evicrol. The histopathological reaction of the dental pulp to the tested materials was read on day 3, 1 and 3 months. They were established to have very good working properties and colour possibilities. No changes in the pulp characteristic for acute or chronic inflammatory reaction were established by the electron microscopic studies. The good immediate and remote results from the experiments carried out are good grounds to admit that the cyanacrylate composites studied are very adequate for application in dental defects with a medium depth and could successfully be applied in the clinical practice. Their suitable colour permits to be used under a thin layer of composition material, not affecting the final aesthetic effect of the obturations.