Özet:

Purpose: The aim of this study is to investigate the effects of different models of methods of obtaining bacterial reproduction on the bacterial models prepared from two different measurement substances. Material and Method: In the framework of the study, a total of 56 measurements were taken from 7 patients who are between 20-30 years of age without any health problems. For the study, two different measurement substances were used, based on hydrocolloid and elastomeric, and according to the modeling method, each measurement substance was divided into four groups: Group 1: After the measurement was taken, the hard wheat was thrown into without any processing. Group 2: After the measurement is taken, it is washed under flowing water and throwed into it a hard clay. Group 3: After the measurement, the sodium is disinfected with hypochlorite (1:10) and a hard clay is thrown into it. Group 4: After the measurement, it is washed under flowing water, disinfected with sodium hypochloride (1:10) and thickened into it a hard clay. After the shells hardened, the models were separated from the size and the samples were taken from the mid palatal area with cotton swap. The samples planted in the bloody agar environment were left for bacterial reproduction in the edema set to 37°C for 3 days. The findings: in both measurement substances, the bacterial reproduction of the bacteria was found to be washed under flowing water and disinfected with sodium hypochloride (1:10) in models (Group 4), and the bacterial reproduction of the bacteria was found to be prepared without any processing on the surface of the bacterial reproduction (Group 1). In both measurements, the bacterial reproduction resulting from disinfection using only sodium hypochloride (1:10) was found to be less than the bacterial reproduction on the clay models prepared without any processing and only after washing under flowing water. Results: The findings found that only water washing is not an effective method of control of infection, while sodium hypochloride (1:10) reduces bacterial reproduction in models prepared from measurements taken by both types of measurement. The aim of this study was to evaluate the effect of various models obtaining methods on bacterial reproduction over the surface of models made from two different impression materials. Materials and Methods: Seven healthy dentate individuals aged 20-30 years were selected and 56 impressions were made. For this study hydrocolloid and elastomeric impression materials were used. According to the model casting method, impressions materials were divided into four groups: Group 1: Impressions with no treatment. Group 2: Impressions were only water rinsed. Group 3: Impressions were only disinfected with sodium hypochlorite (1:10). Group 4: impressions were water rinsed and then disinfected with sodium hypochlorite (1:10). After gypsums hardening, the models were retrived from impressions. For all groups bacterial swabs were collected with dry sterile cotton swab in the middle palatal region of models. The samples were inoculated in blood agar media and incubated for bacterial growth for 3 days at 37 °C in incubator. Results: The results showed that the lowest bacterial growth on impressions were identified in group with water rinsed and then disinfected with sodium hypochlorite (1:10) (Group 4) and the highest bacterial growth on impressions were identified in group with no treatment (Group 1) for both impression materials. For both impression materials, bacterial growth on impressions with sodium hypochlorite disinfection (1:10) was less than impressions with no treatment and impressions with only water rinsed. Conclusion: As a result of this study it can be concluded that only washing with water is not effective method for the control of infections, sodium hypochlorite (1:10) reduces the bacterial growth on gypsum casts for both impression materials. Keywords: Impression materials, sodium hypochlorite, model casting