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    Comparison of the Effect of Denture Cleansers on Long-Term Water Sorption and Solubility of Polyetheretherketone with other Denture Base Materials
    (Marmara Univ, Inst Health Sciences, 2022) Demirci, Fatih; Tanik, Abdulsamet
    Objective: In this in vitro study, the effect of three denture cleansers (DCs) after immersion in a chemical solution applied to polyetheretherketone (PEEK) and other denture base materials (DBMs) on long-term water sorption and solubility was compared. Methods: Disk-shaped specimens (50 +/- 1.0-mm diameter and 0.5 +/- 0.1-mm thickness) were prepared from four DBMs (n=48). All specimens were randomly subdivided into four storage media groups (n=12): Corega tablet (CT), Protefix tablet (PT), 1% sodium hypochlorite (NaOCl) solution (SH), and control (distilled water, DW). Storage media were renewed thrice a day for 120 days and simulated for 1-year use of overnight immersion. Water sorption and solubility (mu g/mm3) of DBMs before and after immersion in storage media were examined and obtained data were statistically analyzed using a multivariate analysis of variance, followed by multiple comparisons by a posthoc Tukey's test (p <0.05).Results: From statistical analysis, the effect of different DCs on the water sorption and solubility of DBMs revealed a statistical difference (p<0.05). The PEEK group exhibited a statistical difference in mean water sorption values among all cleanser groups (p<0.05). For the PEEK group, a statistical difference was observed in the DW group among SH and CT groups in terms of the mean solubility values (p<0.05), while a statistically significant difference was not observed in the PT group among SH and CT groups (p> 0.05).Conclusion: DCs affect PEEK and other DBMs in terms of water sorption and solubility in the long-term follow-up.
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    Effect of unfiltered cigarettes on marginal bone loss of dental implants: A single center 4-year retrospective clinical study
    (Mosher & Linder, Inc, 2022) Tanik, Abdulsamet; Demirci, Fatih
    Purpose: This retrospective clinical study evaluated, by radiographic analysis, the effect of unfiltered and filtered tobacco cigarette smoking on marginal bone loss (MBL) in the subjects with dental implants. Methods: In a 4-year retrospective clinical study, 419 dental implants were placed in 188 subjects aged 23-76 years who underwent implant-supported fixed prosthetic restorations. The effects of gender, implant length, implant diameter, implant location, and use of unfiltered and filtered tobacco cigarettes on marginal bone were investigated. MBL was analyzed on the mean, mesial, and distal surfaces of dental implants on periapical radiographs. The results of the data were statistically analyzed with ANOVA and Tukey test. Results: A significant correlation was found between MBL difference and gender, implant length, and implant location (P< 0.05). Smokers had significantly higher MBL than nonsmokers, both within and between groups (P< 0.05). There was a significant difference in MBL in the mesial region in unfiltered cigarette smokers compared to filtered cigarette smokers (P= 0.013). There was a significant increase in MBL in the mesial and distal region compared to heavy smokers of cigarettes without filters (>20 cigarettes/day) and heavy smokers of cigarettes with filters (>20 cigarettes/day) (P< 0.05).
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    Investigation of the effects of periodontal treatment on glycaemic control: A cross-sectional clinical experiment
    (2021) Tanik, Abdulsamet
    Aim: The aim of this study was to evaluate the effects of periodontal treatment on glycaemic control in patients with type II diabetes mellitus. Materials and Methods: This study was conducted in 40 patients (19 men and 21 women) with periodontitis. The control group, which included 20 patients who had stage I-II periodontitis but were otherwise healthy, underwent periodontal clinical measurements before and after periodontal treatment. The diabetic group, which included 20 patients with type II diabetes mellitus and stage I-II periodontitis, also underwent periodontal clinical measurements before and after periodontal treatment. The study was conducted in patients between the ages of 18 and 69 years. The plasma blood glucose, C-reactive protein (CRP), and glycated haemoglobin (HbA1c) levels were measured at baseline and 3 months. The probing pocket depth (PPD), plaque index (PI), and gingival index (GI) were measured from four surfaces of the relevant teeth of all the patients who participated in the study to determine the periodontal status. The collected numerical data were statistically analysed. Results: The fasting plasma glucose, CRP, and HbA1c levels significantly decreased in the diabetic group three months after periodontal treatment (p<0.001). There was a statistically significant difference in the change in the PPD, PI, and GI from baseline to 3 months between the two groups (p < 0.05). Conclusion: In our study, periodontal treatment positively contributed to glycaemic control by significantly decreasing fasting plasma glucose, HbA1c, and CRP values in patients with type II diabetes.