Özet:

Purpose: The purpose of this study is to study in vitro the effect of the use of two different spray disinfectants on the dimensional stability of the elastic measurement substances. Tools and Methods: Our study used 3 different sizes of mad-desi (polyeter, condensation type silicone and additional type silicone) and two different spray desinfectants (based on Zeta 7: isop- ropanol and based on Descosept: quarterner ammonium compounds). For measurements, the pas-less steel model was used and a total of 90 measurements were obtained, so that each measurement will be 30 pieces from the material. Three groups were created containing 10 samples for each measurement material. The groups applied to Zeta 7 and Descosept spray were left for 15 minutes and washed under flowing water. The other group was used as a control group. Through the measurements, the models were made. The prepared shell models were created digital images by scanning in a three-dimensional dental scan device. On the obtained digital model images, linear measurements were made between the reference points using the device’s own software. Results: The statistical analysis of the obtained data was made using the SPSS 22.0 program. The Shapiro-Wilk test, in which the data is consistent with normal distribution, has been checked and the data is consistent with normal distribution, and the money-metric test has been used. Two independent t tests were used to evaluate the effect of two different dezinfectant materials - the line, the dimensional stability-minus on different measurement materials. The results were assessed in a 95% confidence range. The result: in the condensed silicone group, a significant difference was observed in the two chemical desinfectant agents in terms of dimensional change (p<0,05). The application of both the chemical desinfectant agents in the polyeter and the additional type of silicone groups results in statistically significant differences in terms of dimensional stability (p<0,05). Keywords: cross infection, disinfectant, measurement disinfection IN VITRO EVALUATION OF THE EFFECT OF DISINFECTION PROCEDURES ON DIMENSIONAL STABILITY OF ELASTOMERIC IMPRESSION MATERIALS ABSTRACT Aim: The aim of this study was to determine the effect of spray disinfection procedures on the dimensional stability of elastomeric printing materials. Material and Methods: In our study, we used 3 different impression materials (polyether, condensation type silicone and additional type silicone) and two different spray disinfectants (Zeta 7: based on isopropanol and Descosept: based on quaternary ammonium compounds). A stainless steel model was used for taking measurements and at each to be 30, a total of 90 measurements was obtained. For each impression material, 3 groups of 10 samples were formed. Zeta 7 and Descosept sprayed groups were left for 15 minutes and washed under running water. The other group was used as the control group. Molds were filled with hard gypsum plaster. Dimensional stability was evaluated using a three-dimensional dental scanning device. Linear measurements were made between the reference points on the digital model images using the device's own software. Results: Statistical analysis was performed using the SPSS 22.0 program. The data was controlled by the Shapiro-Wilk test and parametric test was used because of the normal distribution of the data. Independent t test was used to assess the effect of disinfection procedures on dimensional stability of elastomeric impression materials. The results were evaluated in 95% confidence interval. Conclusion: There was statistically significant difference in the average values of dimensional stability in condensation type silicone (p<0,05). There was no statistically significant difference in the average values of dimensional stability in polyether and additional type silicone (p<0,05). Keywords: cross infection, disinfectant, disinfection of impression

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