Browsing by Author "Değirmenci, A."

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How Do the Diet, Oral Hygiene Habits and Body Mass Index Affect Tooth Caries in the Students of the Faculty of Dentistry
(Yuzuncu Yil Universitesi Tip Fakultesi, 2020) Değirmenci, A.; Değirmenci, B.Ü.
The purpose of this study is to examine the effects of oral hygiene and dietary habits on body mass index (BMI) and decayed, missing and filled teeth (DMFT) index of dentistry faculty students. A total of 166 students studying at Van Yuzuncu Yil University Faculty of Dentistry were included in the study. Participants were asked to complete a questionnaire containing 16 questions related to diet and oral hygiene habits. The number of teeth in the mouth and DMFT indexes were recorded according to WHO criteria. During the general health examination, the length and weight of the participants were measured and recorded. Body mass index (BMI) was calculated as kilograms per meter squared. Calculated BMI of the male and the female participants was found as 23.23 and 21.48 respectively. Statistically, no significant relationship was found between the diet and oral hygiene habits in the survey and BMI and DMFT(p>0.05). When ZINB regression results were examined, it was observed that there is a significant difference statistically between the classes in terms of DMFT (p<0.0001), however there is no difference in terms of BMI and gender (p>0.05). Considering the future roles of the students in the faculty of dentistry, it is very important to find out their information level about both oral hygiene habits and diet habits and if necessary to plan future trainings about this and aim to increase the information levels. © 2020, Yuzuncu Yil Universitesi Tip Fakultesi. All rights reserved.
The Knowledge Level of Families Living in Van About Dental Trauma and Its Treatment
(Yuzuncu Yil Universitesi Tip Fakultesi, 2019) Değirmenci, B.Ü.; Değirmenci, A.
The aim of this study was to assess the awareness of Turkish family members living in Van about TDI management and treatment. The questionnaires designed for our study consist of the answers of 762 random individuals who applied to Van Yuzuncu Yil University Faculty of Dentistry between February 2018 and November 2018. The questionnaire consists of 21 questions about TDI awareness and management. Descriptive statistics for demographic data are illustrated using the mean. The Chi-Square test was used to assess the statistical significance between demographic data and TDI questions. Our study revealed that 48.5% of the participants were never informed about TDI before. 64.8% think that they are not competent enough to intervene in case of a TDI situation. The majority of Turkish family members knows little about the optima l storage medium. It was determined that the participants were not as well-informed about TDI management as they presumed to be. Educational activities should be organized in order to raise the awareness of TDI among Turkish family members. © 2019, Yuzuncu Yil Universitesi Tip Fakultesi. All rights reserved.
Pre-Heating Effect on the Microhardness and Depth of Cure of Bulk-Fill Composite Resins
(Universidad de Costa Rica, 2022) Değirmenci, A.; Can, D.B.
The aim of this study was to investigate the effect of preheating three bulk-fill and one conventional composite resin on the Vickers microhardness and depth of cure of these composites. In this study, three bulk-fill composites-SDR Plus (SDR), Estelite BULK FILL Flow (EST), Admira® Fusion x-tra (AFX), and one conventional composite resin G-ænial POSTERIOR (GP) were used as the control group. The samples were obtained at room temperature (24°C) and at 55°C in T2 mode after being placed in a heating device for 10 minutes. The samples were divided into eight groups (n=10) according to the type of material and heating process that was utilized (preheated and nonheated). All samples were tested with a Vickers microhardness (VHN) tester on the bottom and top surfaces. The first measurements were obtained at baseline; the second set of measurements was performed after the samples were stored in distilled water at 37°C for 24 hours. The depth of cure was calculated using a bottom/ top hardness ratio of measurements. Statistical analysis was performed utilizing the SPSS V23 and Shapiro-Wilk tests. Lastly, the Duncan test was used for multiple comparisons (p<0.05). While the VHN increased after the preheating procedure in bulk-fill composites, it decreased in GP. There was no difference between the baseline and the 24-hour VHN values in SDR and GP. After 24 hours, while the VHN of EST increased, the VHN of AFX decreased. There was no difference between the hardness ratios of the AFX and EST samples (p<0.001) and hardness ratios were greater than GP and SDR. When comparing the baseline and the 24-hour values, the VHN depended on the type of materials. Sufficient curing depth was obtained in all groups with a thickness of 2mm. © 2022, Universidad de Costa Rica. All rights reserved.
Yüksek Dolduruculu Akışkan Kompozit Rezinlerin Çarklı Cila Sistemleri ile Parlatıldıktan Sonraki Yüzey Özellikleri ve Renk Değişimleri
(Selcuk University, 2024) Çalişkan, M.A.; Değirmenci, A.; Boyacioğlu, H.; Türkün, L.Ş.
Background: Evaluate the effects of two simplified wheel polishing systems on three highly filled flowable composite resin on surface roughness, gloss and color stability. Methods: Four different resin composites were used in the study: Clearfil Majesty Flow (CMF), Omnichroma Flow (OMN), G-aenial Universal Injectable (GUI), and a nanohybrid material NeoSpectra (NS). From each material 8 mm to 2 mm 24 disc samples were prepared (total of 96). One side of the samples were polished with Twist Dia (TWD) or Nova Twist (NOV) to obtain two sub-groups. Surface roughness was measured with a Profilometer, gloss with a Glossmeter and specimens were immersed in coffee for 7-days. Color measurements were performed with a spectrophotometer after each step. Scanning electron microscope images of the surfaces were taken at all stages using two samples from each group. Surface roughness and gloss values were analysed by ANOVA, Tukey and Pearson Correlation tests. Color changes were evaluated with Paired-T-test, Independent T-test, ANOVA and Dunnett-t tests (p<0.05). Results: OMN showed the smoothest surfaces (p<0.05). Gloss was statistically different for TWD groups. All groups were less glossy than the Mylar strip groups (p<0.05). In TWD groups, NS was the group that exhibiting the most color change while CMF was the least (p=0.009). In NOV groups, OMN and NS were the groups having the most color change while GUF and CMF showed the less. After re-polishing, the color of all materials in TWD groups changed to ΔE<2; while in NOV groups, only NS group reached ΔE<2. The difference was significant for OMN and NS (p=0.011). Conclusion: Polishing with wheel systems in highly filled flowable composite resins produced smooth surfaces, but gloss values were low. After repolishing, all TWD groups reached ΔE<2, while only the NS group reached this value in NOV groups. © 2024, Selcuk University. All rights reserved.