Browsing by Author "Ozlek, E."

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Debris Extrusion During Root Canal Preparation With Nickel-Titanium Instruments Using Liquid and Gel Formulations of Sodium Hypochlorite in Vitro
(John Wiley and Sons Inc, 2021) Ozlek, E.; Neelakantan, P.; Khan, K.; Cheung, G.S.P.; Rossi-Fedele, G.
This study compared the amount of apically extruded debris during root canal preparation with three single-file systems using liquid and gel-based formulations of sodium hypochlorite (NaOCl) or distilled water. Seventy-two single-canalled roots were divided into three groups: HyFlex EDM (Coltene–Whaledent); Reciproc Blue (VDW); and F-One Blue (Shanghai Fanta) and then divided into three subgroups: NaOCl liquid (Imicrly), NaOCl gel (Cerkamed Medical) and distilled water. The amount of extruded debris was calculated by determining the dry weight of the debris collected. Data were analysed using Kruskal–Wallis test with Bonferroni correction. Debris extrusion occurred in all subgroups. Both the instrument and the irrigant had an impact. The F-One Blue tended to extrude the least debris, though no significant difference was observed in the pairwise comparisons between instruments. NaOCl liquid resulted in significantly more extruded debris than NaOCl gel or distilled water. The results lead us to conclude that the NaOCl gel reduced debris extrusion compared to NaOCl liquid. © 2020 Australian Society of Endodontology Inc
The Effect of Heat-Treated Single-File Systems on Dentinal Crack Formation
(Wolters Kluwer Medknow Publications, 2021) Ozlek, E.; Gunduz, H.
Objectives: The aim of this study was to compare the formation of dentinal crack after root canal preparation performed with different heat treated single-file systems. Materials and Methods: Forty mandibular premolar teeth were randomly divided into four groups according to the file system to be used during the preparation (n = 10): Group 1: Reciproc Blue; group 2: One Curve; group 3: HyFlex EDM; group 4: (control group) hand files. During the cleaning and shaping, irrigation was performed with a total of 10 ml of 5.25% sodium hypochlorite and 2 mL of distilled water. Then sections were taken from the roots (3, 6 and 9 mm). Sections were examined on a stereomicroscope to determine the presence of cracks. Chi-square test was used for data analysis. Results: There was a significant difference between the groups in dentinal crack frequency (P <.05). HyFlex EDM (13.3%) caused less dentinal crack than One Curve (26.7%) and Reciproc Blue (30%). No cracks were observed in the control group. When 3, 6, and 9 mm were evaluated within themselves, dentinal crack formation did not differ according to the groups (P > 0.05). A statistically higher mean value was obtained in the control group compared to the other groups in terms of working time (P < 0.001). Conclusions: All the files used during root canal preparation formed dentin crack. Hy-Flex EDM caused less dentinal cracks than other file systems. The flexibility of nickel-titanium instruments because of heat treatment seems to have a significant influence on dentinal crack formation. © 2021 Wolters Kluwer Medknow Publications. All rights reserved.
The Effect of Solution and Gel Forms of Sodium Hypochlorite on Postoperative Pain: a Randomized Clinical Trial
(Faculdade De Odontologia De Bauru, 2021) Ozlek, E.; Gunduz, H.; Kadi, G.; Taşan, A.; Akkol, E.
Objectives: The aim of this study is to evaluate the effect of using gel and solution forms of NaOCI during the chemomechanical preparation of the root canals on postoperative pain at different time intervals. Methodology: 114 patients with mandibular molar teeth and symptomatic irreversible pulpitis were included in the study. All patients were divided into two groups based on the irrigant used during root canal preparation (n=57): Group 1, 5.25% NaOCI, Group 2, 5.25% NaOCI gel. All groups were filled with gutta-percha and AH Plus root canal sealer using single-cone technique. VAS scale (1-10) was used for postoperative pain assessment. After endodontic treatment, all patients were asked to record their postoperative pain levels at the 6th, 24th, 48th, 72nd hours, and 1 week later. The data were analyzed using Chi-Squared, Independent Samples T, Cochran Q and Friedman tests. Results: Statistically significant difference was not found between the distributions of pain levels at different times according to the groups (p>0.050). A statistically significant difference was observed between the distributions of pain levels measured at different times in the solution group (p<0.001). A statistically significant difference was found between the distributions of pain levels measured at different times in the gel group (p<0.001). In both groups, highest postoperative pain levels occurred in the first 6 hours. Pain levels of the gel group as 38,5% mild, 17.3% moderate, 5.8% severe and pain levels of the solution group were obtained as 46.2% mild, 26.9% moderate, 9.6% severe at the 6th hour. Conclusions: The use of the gel form of NaOCI during the chemomechanical preparation of the root canals showed similar postoperative pain when compared to the solution form. © 2021, Faculdade De Odontologia De Bauru. All rights reserved.
Socio-Demographic Determinants of Dental Anxiety and Fear Among College Students
(Yuzuncu Yil Universitesi Tip Fakultesi, 2019) Ozlek, E.; Yıldırım, A.; Koc, A.; Boysan, M.
The purpose of this study is to investigate the relationships of dental anxiety and fear with socio-demographic and clinical features, as well as physical exercise frequency. A total of 230 undergraduate students from five different majors including den tistry, medicine, veterinary medicine, physical education vocational high school, and faculty of education participated in the study. The mean age of participants was 23.27 (SS=2.09). A socio-demographic questionnaire, the Modified Dental Anxiety Scale (MDAS) and the Dental Fear Scale (DFS) were used in the study. In order to evaluate the correlates of dental fear and anxiety, two multiple regression analyses were performed where the scores of Dental Fear Scale and Dental Anxiety Scale were dependent variables. Multiple regression analyses showed that both dental fear and dental anxiety were significantly associated with being of younger age, being female, having a prior history of a psychiatric disorder, and less likely to exercise physically. Considering differences across five majors, medicine and dentistry students were less likely to report dental fear and anxiety relative to other majors. We concluded that females, individuals with a younger age, individuals with a psychiatric history, an those less likely to exercise physically were at greater risk of dental anxiety and fear. © 2019, Yuzuncu Yil Universitesi Tip Fakultesi. All rights reserved.