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    Comparative effects of denture cleansers on physical properties of polyamide and polymethyl methacrylate base polymers
    (JAPANESE SOC DENTAL MATERIALS DEVICES, 2013) Durkan, Rukiye; Ayaz, Elif Aydogan; Bagis, Bora; Gurbuz, Ayhan; Ozturk, Nilgun; Korkmaz, Fatih Mehmet
    The purpose of this study was to evaluate the effect of denture cleansers on the surface roughness, hardness and color stability of two polyamides (Valpast, Deflex), a butadiene styrene copolymer PMMA (Rodex), and PMMA polymer as a control group (Paladent). Each material was divided into 5 sub-groups (n=7) as two control and three test groups. Three test groups were immersed for 20 days in commercially available three denture cleansers (CO-Corega, PR-Protefix, VA-Valclean). Two-way analysis of variance and Tukey's post hoc HSD test were used to evaluate surface roughness and hardness data (alpha=0.05). Delta E, Delta L*, Delta a* and Delta b* mean values were used for ANOVA, Tamhane test was used as post hoc. Polyamides showed low hardness and high roughness before and after immersion. A significant decrease in hardness was observed for all resins except Rodex after immersion (p<0.05). The denture cleansers changed the roughness, hardness and color of some resins.
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    Evaluation of Cariogenic and Erosive Potential of Prescribed Pediatric Medicaments in Northeast of Turkey: An In Vitro Study
    (Selçuk Üniversitesi, 2022) Yılmaz, Nagehan; Korkmaz, Büşra; Erbek, Şengül Merve; Baygın, Özgül; Korkmaz, Fatih Mehmet; Tüzüner, Tamer
    Background: To purpose of the present study is to evaluate in vitro the cariogenic and erosive potential of the medicaments prescribed for pediatric use in the Northeastern Region of Turkey. Methods: In the present study, 30 different medicaments of 14 different drug groups were selected among the medicaments prescribed by pediatricians. The pH, Total Titration Acidity (TTA), Total Soluble Solid Content (TSSC), Total Sugar Content (TSC) of the medicaments were measured. The data obtained in this way were analyzed by using the SPSS Statistics Software. The Pearson Chi-Square Test was used in all groups when comparing the pH, TTA and TSSC values. Results: It was determined that the median pH values of the medicaments that were tested ranged between 3.11 and 7.62; and 53.3 % of the medicaments had pH levels below the critical median value (5.5). It was found that the TTA values were low in all groups according to the median value. The highest TTA value was measured 23.8770 and the second was 22.9540.The lowest TSSC was found to be 1.3320, and the highest TSSC was 1.4450. Sugar content was detected in 33 % of the medicaments that were used in total sugar content analysis. Conclusion: The medicaments that were analyzed showed physical chemical properties showing cariogenic and erosive potentials in dental tissues. In this respect, healthcare professionals, drug manufacturers, and parents must be informed about the risks caused by the consumption of potentially harmful medicaments in dental tissues.