COMPARATIVE STUDY OF TEMPORARY FIXING CEMENTS ADHESION AND ITS ALTERATION DUE TO ADDING OF PHYTOECDYSTEROIDS-CONTAINING COMPOUND TO COMPOSITION

Aim. Comparative study of temporary cements adhesion in the pure state and adhesion alteration in response to injection of phytoecdysteroids-containing compound. Materials and Methods. 400 tensile strength tests were performed, 20 tests for each of 5 temporary cements, with and without addition of phytoecdysteroids-containing compound. The addition of phytoecdysteroids-containing compound to Dentin-powder and to OrthoFix-Aqua К, was accomplished by substitution of water with phytocompound. The addition to Temp-Bond NE, Repin, eugenol-free TempoFix cements was performed at the ratio of 1:2. As specimens, the cement-bound teeth cuts and cylinders of metal or plastic with defined surface size were used. Regarding the results, the calculation of mean values of adhesion in MPa was performed. Results. The specimens with eugenol-free TempoFix were of the maximum adhesion 1.172±0.199 MPa for fixing dental tissue-metall and of 1.121±0.172 MPa for dental tissue-plastic, that is 21% and 15% greater than eugenol-free TempoFix + phytoecdysteroids-containing compound with adhesion of 0.980±0.063 MPa and 0.950±0.110 MPa. OrthoFix-Aqua K was of minimum adhesion value of 0.112±0.028 MPa and 0.100±0.029 MPa without phytoecdysteroids-containing compound and 0.118±0.034 for specimens of dental tissue-metal type and 0.110±0.026 MPa for dental tissue-plastic type accordingly.Dentin-powder adhesion is 0.171±0.036 MPa and 0.237±0.058 MPa without phytoecdysteroids-containing compound, 0.193±0.048 MPa and 0.188±0.023 MPa in response to adding of phytoecdysteroids-containing compound. The adding of phytoecdysteroids into Repin caused sufficient decrease of adhesion in dental tissue-metal specimens by 32% from 1±0.143 down to 0.678±0.088 MPa, decrease in dental tissue-plastic specimens made up 16% from 0.871±0.126 MPa down to 0.730±0.104 MPa. Specimens with Temp-Bond NE exhibit dental tissue-metal adhesion of 0.945±0.155 and dental tissue-plastic adhesion of 1.047±0.126 MPa which is greater than for specimens of Temp-Bond NE + phytoecdysteroids-containing compound with values of 0.796±0.154 MPa and 0.867±0.118 MPa by 16% and 17% accordingly. Conclusions. For long-term fixing, eugenol-free TempoFix, Temp-Bond NE, Repin should be applied. For short-term fixing, OrthoFix-Aqua K and Dentin-powder should be applied. Adding of phytoecdysteroids-containing compound basing on a 40% alcohol solution does not affect the adhesion of water mixable temporary cements. However for zinc oxide eugenol type and zinc oxide eugenol-free cements the value decreases. For short-term fixing at vital teeth, the application of Dentin-powder and OrthoFix-Aqua K cements with adding of phytoecdysteroids to the composition is possible. The application of eugenol-free TempoFix, Temp-Bond NE and Repin with adding of phytoecdysteroids is possible for long-term fixings at vital teeth.