![]() For each impression, 6 specimens were dissected from 6 different locations and exposed to 6 different regimens: 1 was left untreated, 1 was immersed in sterile water for 10 minutes to serve as a control, and the remaining 4 specimens were exposed to 4 different disinfection treatments (Dimenol, Perform-ID, MD 520, and Haz-tabs). For each participant, 3 successive impressions were recorded in the different impression materials. A total of 45 impressions were taken from the maxillary dentate arches of 15 dental staff participants at the Department of Dentistry, Prince Rashid Hospital, Irbid, Jordan. The aim of the current study was to determine the effectiveness of 4 different disinfectant solutions on 3 commonly used impression materials-alginate, polyether, and polyvinyl siloxane-to establish a protocol for disinfection of these impression materials after clinical exposure and prior to handling in the dental laboratory. PMID:27826387Īntimicrobial effect of 4 disinfectants on alginate, polyether, and polyvinyl siloxane impression materials.Īl-Jabrah, Osama Al-Shumailan, Yousef Al-Rashdan, Manhalĭental impressions often carry microorganisms that may cause cross infection from patients to dental staff. ![]() CONCLUSION It was possible to obtain more mechanically stable alginate impression materials by using the custom-made proportioning unit. To verify the efficiency of the system, powder and powder/water mixing were weighed and significant decrease was observed. However, a decrease in the standard deviation of tested groups was observed when the customized machine was used. RESULTS No statistically significant differences in modulus of elastisity (P>0.3), tensional/compresional strength (P>0.3), resilience (P>0.2), strain in failure (P>0.4), and tear energy (P>0.7) of alginate impression materials were seen. The experimental data were statistically analyzed using one way ANOVA and Tukey test at the 0.05 level of significance. Compression tension and tear tests were conducted to determine the mechanical properties of alginate impression materials. ![]() MATERIALS AND METHODS The variation of coefficient in the tested groups was compared with the manual proportioning. With this device, it was ensured that proportioning operation could arrange weight-based alginate impression materials. In this study, an automatic proportioning unit for the alginate mixer and controller software were designed and produced for a new automatic proportioning unit. ![]() PURPOSE Alginate mixers available in the market do not have the automatic proportioning unit. Empirical study of alginate impression materials by customized proportioning system ![]()
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