This article deals with the experimental evaluation of the bioactive film effect on the bending strength of the ceramic materials. The surface finish of ceramics consists in its covering by ceramic layer. This film contains "rough particles", i.e. contains certain share of rough particles of the identical chemical composition as the matrix that affects properties of the surface from view of the bioactivity. The experiment was executed and evaluated in Mechanical Testing Laboratory on 51 specimens that were divided into 9 groups.