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ALKAN, ELİF

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    PublicationOpen Access
    Survey study on awareness and consciousness level of sustainability in dentistry
    (2023-09-01) TAĞTEKİN, DİLEK; AKMANSOY, ŞÜKRÜ CAN; ALKAN, ELİF; BEŞİROĞLU S., TAĞTEKİN D., AKMANSOY Ş. C., ÖZKUYUCU D., ALKAN E.
    The United Nations' 17 Sustainable Development Goals (SDGs) are vital for equitable global benefits and a healthier future. This study examines the awareness levels of individuals with and without clinical dentistry training using LimeSurvey Community Edition and SPSS (Version 28.0.1.). The survey, conducted between July 15, 2021, and January 1, 2022, had 1734 participants, excluding third-grade students due to differing clinical instruction. Dental students, dentists, specialty/PhD students, specialists, academicians, and health personnel were included. The dental questionnaire comprised 26 questions, with statistically significant differences (p<0.05) in 11 responses. Those with clinical dental education showed significant (p<0.05) positive responses to sustainability-related questions, but no significant difference (p≥0.05) in general sustainability statements. The study emphasizes the need to define fundamental steps to address the current lack of interest in Sustainability in Dentistry and suggests integrating sustainability topics into the dental curriculum. Encouraging such practices can have a global impact, aligning with the SDGs. Educating dentistry professionals on sustainability will contribute to achieving these goals and benefitting present and future generations.
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    PublicationOpen Access
    Evaluating the effects of different remineralization agents on initial enamel lesions in vitro
    (2022-04-23) ALKAN, ELİF; YILMAZ ATALI, PINAR; TAĞTEKİN, DİLEK; SARIALİOĞLU GÜNGÖR A., DALKILIÇ E., ALKAN E., YILMAZ ATALI P., TAĞTEKİN D.
    Aim: Disruption of the demineralization–remineralization balance could activate the development of initial enamel lesions. Extrinsic assistance is needed to remineralize enamel lesions. The aim of this study was to evaluate the efects of fuoride varnish, enamel matrix proteins derivative, and experimental bioactive glass (BAG) on remineralization of initial enamel lesions in vitro. Materials and Methods: Artifcial initial caries lesions were developed on ffty human enamel samples using demineralization solution (pH 4.5, 37°C, 96 hours). Samples were randomly assigned to 5 groups (n=10): I-Fluoride varnish (Enamelast), II-Experimental BAG + 37% phosphoric acid (PA), III-Enamel matrix proteins derivative (EMPD, Emdogain) +Ethylenediamine-Tetraacetic-Acid (EDTA), IVEMPD+37% PA, V-Control (untreated). All remineralization agents were applied with pH cycling for 7 days. The samples were scanned by optical coherence tomography (OCT) at baseline, demineralization, and after pH cycling. Lesion depths were measured using image analysis software (ImageJ). Lesions were evaluated using surface microhardness (SMH) and two fuorescence methods (FluoreCam® and DIAGNOdent Pen (DDPen)). The data were statistically analyzed by Kruskal Wallis, Friedman, and Wilcoxon tests (p<0.05). Results: According to OCT results, fuoride varnish was found to be the most efective agent in reducing lesion depth (p=0.005). Depending on SMH results, all agents increased the surface hardness values after pH cycling. No signifcant diference was found among fuoride varnish, BAG, and EMPD+PA groups. And these microhardness values were signifcantly higher than EMPD+EDTA and control groups (p<0.001). According to the DDPen score criteria, all groups showed lower scores compared with the control group (p<0.001), however, Clinical Oral Investigations (2022) 26:7299–7348 7317 1 3 no signifcant diference was found among the remineralization agent groups. In FluoreCam assessment, size and intensity values of all treated groups showed improvement. However, there was no signifcant diference between the treatment groups in terms of FluoreCam-size measurements (p=0.186). Conclusion: BAG and EMPD+PA has a remineralization capacity as much as fuoride varnish. EMPD+PA showed better microhardness and lesion intensity results than EMPD+EDTA.
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    PublicationOpen Access
    Microleakage Evaluation of Photopolymerization Efficiency in Different Layering Methods of New Generation Led Light Devices
    (2023-07-01) ALKAN, ELİF; TAĞTEKİN, DİLEK; YÜCEL M., ALKAN E., TAĞTEKİN D., YANIKOĞLU F.
    Background/Aim: The aim of this study was to examine the microleakage values after restoring the prepared Class II box cavities using two different composite resins with three different layering methods and polymerizing them with five different LED light devices. Material and Methods: Class II box cavities were prepared in 150 extracted mandibular molars. Nanoceramic composite resin (Ceram.x SphereTEC one universal A2, Dentsply, Germany) and bulk fill composite resin (SDR flow+ A2, Dentsply, Germany) were used for the restoration of the cavities. Teeth were restored with three different layering methods (bulk fill, horizontal layering, and centripetal buildup technique) and five different LED light devices [(Smartlite Focus, Dentsply, USA), (Led.E, Woodpecker, China), (Valo Cordless, Ultradent, USA), (Bluephase N, Ivoclar Vivadent, Liechtenstein), (D-Light Pro (GC, USA)] and then subjected to microleakage analysis. Kruskal Wallis and Mann Whitney U test were used for statistical analysis. Th e data was evaluated under p<0.005 significant level. Results: Using different layering methods did not affect microleakage scores statistically (p=0.7683). Applying bulk-fill composite resin with 2 mm horizontal layers or using the centripetal buildup technique did not show significant differences in microleakage. Second- and third-generation light devices demonstrated no statistical difference in microleakage (p=0.9075). Conclusions: Using different layering methods and different curing units did not make any difference in microleakage. Keywords: Composite Resins; Curing Lights, Dental; Dental Leakage; Dental Restorations, Permanent.
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    PublicationOpen Access
    Comparison of two different intraoral scanners for determination of caries related volume loss in caries removal
    (2023-08-01) ALKAN, ELİF; TAĞTEKİN, DİLEK; KORKUT, BORA; ŞEKER M., ALKAN E., TAĞTEKİN D., KORKUT B., YANIKOĞLU F.
    Objective: This study aims to evaluate the centering ability and canal transportation of the ProTaper Next, One Curve, and TruNatomy instruments in curved root canals. Methods: Forty-five curved mesiobuccal canals of human mandibular molar teeth were selected, randomly divided into 3 groups, and prepared using the ProTaper Next, One Curve, and TruNatomy files. Cone Beam Computed Tomography images of the cross-sectional planes at 1 mm, 3 mm, 5 mm, and 7 mm from the apical foramen were determined before and after the preparation. For each specified millimeter canal transportation and centering ability were measured. Statistical analysis was performed and compared all groups. Results: No significant differences were observed between the groups or root canal levels in both canal transportation and centering ability (p > 0.05). Conclusion: The TruNatomy system demonstrated comparable results with both predecessor ProTaper Next and One Curve single-file systems.
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    PublicationOpen Access
    Evaluation of the Effect of Different Remineralizing Agents and Ozone Application on Artificial Carises
    (2024-01-01) ALKAN, ELİF; TAĞTEKİN, DİLEK; Erçin Ö., Kopuz D., ALKAN E., TAĞTEKİN D., Yanikoğlu F.
    This study aimed to assess the combined and individual effects of different remineralization agents and ozone application on initial caries. Seventy-two premolar teeth were collected. Three different toothpastes (Ipana, ROCS, and Gumgumix) were utilized. The samples were divided into eight groups (n = 8) for experimentation (Distilled water, Ipana+Ozone, Gumgumix+Ozone, ROCS +Ozone, Ipana, Gumgumix, ROCS, Ozone). Microhardness measurements were conducted initially. All samples were then immersed in a demineralization solution for 72 hours to induce initial caries. Then, microhardness measurements were repeated, and pH cycles were carried out for one-week. Finally, microhardness measurements and SEM-EDS analyses were performed. Ipana+Ozone exhibited the highest microhardness value, which was statistically significant compared to other groups except ROCS+Ozone (p < 0.05). Distilled water, Gumgumix+Ozone, and Gumgumix displayed the lowest microhardness values. Ozone application with remineralization agents led to higher precipitation of Ca ions. The demineralized group showed the lowest Ca, P, and F ions. While Ipana +Ozone and ROCS+Ozone had the highest Ca ions, Gumgumix+Ozone had the highest P ions. Within the study’s limitations, it can be concluded that ozone gas positively impacts the remineralization process in initial caries lesions. Additionally, mineral-containing products demonstrated a noteworthy capacity to reverse the demineralization process.