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Öğe Approaches of General and Specialist Dentists to Deep Caries Management: A Cross-Sectional Study from Turkey(Univ Indonesia, Fac Dentistry, 2021) Delikan, Ebru; Erturk-Avunduk, Ayse Tugba; Aksu, SeckinObjective: To determine the differences in treatment strategies and material preferences for deep dentine carious lesions (DDCLs) management among general and specialist dentists. Methods: Dentists working in universities, oral and dental health centers, or private practice were administered a 14-item web-based questionnaire regarding demographic and occupational characteristics, approaches to DDLCs, pulp capping methods, and preferences for restorative materials. The data were examined using descriptive statistical analysis and Pearson's chi-square tests. Results: The study enrolled 298 general and 265 specialist dentists among whom 67.1% were female and 73.3% were aged 25 to 35 years. Total excavation and permanent restoration of DDCLs were the commonly preferred treatments (67.0%), although the pediatric dentists tended toward selective caries removal in these lesions. Mineral trioxide aggregate was used more regularly by the pediatric dentists and endodontists. The pediatric dentists exhibited statistically significantly lower preference for canal treatment than general dentists and endodontists as treatment option for mature teeth with DDCLs (p<0.05). Conclusion: Conservative treatment approaches and material preferences of specialists and general dentists in DDCLs are generally different. The age of dentists, the time since their graduation, place of work and the number of patients they have seen daily may affect the approaches and preferences.Öğe Çocuklarda Genel Anestezi Altında Diş Tedavileri Sonrası Veli Memnuniyeti(Deneysel, Biyoteknolojik, Klinik ve Stratejik Sağlık Araştırmaları Derneği, 2019) Delikan, Ebru; Çalışkan, Seçil; Kizilaslan, SenaAmaç:Bu çalışmada, çocukları genel anestezi altında diş çürüğü nedeniyle tedavi gören ebeveynlerin memnuniyet düzeylerinin araştırılması ve memnuniyet düzeylerini etkileyen tedavi öncesi faktörlerin belirlenmesi amaçlanmıştır. Yöntem:Çalışmaya genel anestezi altında nazal entübasyonla dental tedavileri yapılan dental fobi/anksiyete, sistemik hastalık ve fiziksel/ mental engele sahip 230 çocuk dahil edildi. 13 sorudan oluşan anketteki sorular hasta ebeveynleri ile telefonla konuşularak yöneltildi (genel anesteziden en az bir ay sonra) ve cevaplar aynı pedodontist tarafından kaydedildi. Verilerin istatistiksel analizi için ki-kare, T testi ve Spearman korelasyon testleri yapıldı.Bulgular:Bu çalışmaya dahil edilen hastalar, yaşları 1.5 ile 18 arasında (ortalama yaş: 6.4 ±2.7 yaş) değişen 139 erkek ve 91 kız çocuğundan oluşuyordu. Genel anestezi altında tedavi edilen hastaların sistemik durum dağılımları; 58 mental engelli, 150 sağlıklı ( dental korku/ anksiyete) ve 23 sistemik hastalıklı şeklindeydi. Ebeveyn memnuniyeti ile genel anestezi altında yapılan tedavilerin zorluk derecesi ve genel anestezi hakkında velilerin başlangıç bilgi düzeyleri arasında anlamlı farklılık tespit edildi. Ebeveynlerin büyük bir çoğunluğu çocuklarının genel anestezi altında tedavi edilmesinden memnundu: %68,3 çok memnun ve %30,3 orta derecede memnun. Ayrıca, çocukların başarısız tedavi deneyimi ile genel anestezi için bekleme süresi ve memnuniyet durumu arasında pozitif yönde anlamlı korelasyon tespit edildi. Sonuç:Çocuklarda GA altında diş bakımı konusunda ebeveyn memnuniyeti düzeyi yüksekti. Ebeveynler tarafından bildirildiği gibi, GA kullanımının en önemli yan etkisi diş korkusudur. Çocuklarda, bu korku her zaman doğru bir şekilde teşhis edilmeli ve önlenmelidir. Genel anestezi altında diş tedavileri, ancak kesinlikle gerekli olduğunda yapılmalıdır.Öğe Çocukluk Çağ ı Kanser Tedavisi Tamamlanmış Hastalarda Oral ve Dental Anomalilerin Değ erlendirilmesi(2020) Delikan, Ebru; Sağcan, Fatih; Çıtak, Elvan ÇaglarBu çalışmanın amacı çocukluk çağı kanser tedavisi tamamlanmış hastaları, ağız diş sağlığı durumları ve dental anomaliler açısındansağlıklı çocuklarla karşılaştırılmalı şekilde değerlendirmektir. Çalışmaya kanser tedavisi tamamlanmış 50 hasta ve herhangi bir sistemikhastalığı bulunmayan 51 sağlıklı birey olmak üzere toplamda 101 kişi dahil edildi. Hastaların klinik muayenesinde ağızdaki yumuşak ve sertdokular incelendi, mine defektleri, dental bozukluklar, DMFT/dft, plak indeksi, gingival indeks skorları değerlendirildi. Radyografikmuayene ile dişlerin kök gelişimleri, apikal kapanma durumu, diş eksiklikleri kaydedildi. Elde edilen verilerin analizi IBM SPSS Statistics21 ile gerçekleştirildi. t testi, tek yönlü varyans analizi (ANOVA) ve Ki-Kare analizleri kullanıldı. DMFT skoru ortalaması vaka grubunda3,20±3,33 iken kontrol grubunda 1,98±2,72 idi. İki grup arasında istatistiksel olarak anlamlı farklılık olduğu belirlendi (p=0,047). Silnessplak indeksi ve Gingival kanama indeks skoru açısından vaka ve kontrol grupları arasında istatistiksel olarak anlamlı bir fark saptanmamıştır(p>0,05). Gelişimsel dental defektler arasında kısa V şekilli durmuş kök gelişimi 5 yaş altında tedavi alan hastalarda ortalama dört kat fazlagörüldü. Mikrodonti saptanan hastaların ise 5 yaş altında tedavi alan grupta, 5 yaş üstünde tedavi alan gruba göre yaklaşık üç kat fazlaolduğu görüldü. Kanser tedavisi almış grupta kontrol grubuna göre ağız hijyeninin daha kötü, DMFT skorlarının daha yüksek olduğu ve 5yaş altında alınan kanser tedavilerinde bazı dental anomalilerin daha sık olduğu tespit edilmiştir. Bu konuda daha geniş örneklem gruplarındaileri çalışmalara ihtiyaç duyulmaktadır.Öğe Comparative evaluation of probiotic solutions on surface roughness and microhardness of different restorative materials and enamel(Mre Press, 2024) Karataş, Özcan; Delikan, Ebru; Avunduk, Ayse Tugba ErturkThis research study aimed to investigate the impact of probiotic mouthwash and kefir on the surface characteristics, specifically surface roughness and microhardness, of different restorative materials, as well as permanent and deciduous tooth enamels. Thirty disc -shaped specimens were prepared from composite resin (G-ae nial Posterior (GP)), polyacid-modified composite resin (compomer) (Dyract-XP (DXP)), and resinmodified glass ionomer cement (Ionoseal (IS)). Additionally, thirty specimens of enamel were obtained from permanent teeth (PT) and thirty from deciduous teeth (DT) by embedding buccal and lingual sections, acquired through vertical sectioning of 15 permanent and 15 deciduous human tooth crowns in the mesiodistal orientation within acrylic resin blocks. The specimens were then categorized into three distinct groups and immersed for 14 days in one of the following solutions: distilled water, kefir or probiotic mouthwash. The mean surface roughness values of all specimens were assessed using an atomic force microscope, while the mean surface microhardness was measured using a Vickers hardness measuring instrument. The results revealed a statistically significant difference in mean surface roughness among the various restorative materials ( p < 0.001). Among the restorative materials, the IS material exhibited notably higher mean surface roughness values than other restorative materials and tooth enamel, while no significant differences were observed between the PT and DT groups. Importantly, the main effect of the solutions under investigation was not statistically significant ( p = 0.208). No significant difference was found between the surface roughness values of specimens subjected to the different solutions. When evaluating the effects of materials and solutions on microhardness, the main effects of material and solution variables and the influence of material -solution interactions were statistically significant ( p < 0.001). Taken together, these results indicate that consistent use of kefir or probiotic mouthwashes may impact the surface properties of various restorative materials and tooth enamel.Öğe Comparison of the sealing ability of apical plug materials in simulated open apices: An in vitro study(Journal of Oral Research and Review, 2020) Delikan, Ebru; Veenhoven, RuutBackground: The aim of this study was to evaluate the microleakage of apical plugs made of four different materials in simulated immature teeth. Materials and Methods: Ninety extracted single-rooted teeth were selected and randomly divided into six groups according to the materials used: NeoMTA, EndoSequence Bioceramic Root Repair Material Fast Set Putty (BC RRM-FS), Biodentine, Endo Repair, negative control, and positive control group. Microleakage was evaluated by using a stereomicroscope to assess the penetration of methylene blue solution. Data were analyzed using descriptive statistics and Pearson’s Chi-square test (P < 0.05). Results: EndoRepair group showed the highest leakage, and NeoMTA group exhibited the best sealing ability of apical plugs. The sealing ability of Biodentine was similar to NeoMTA and BC RRM-FS. On the other hand, the sealing ability of BC RRM-FS significantly lower than NeoMTA, but it provided a better sealing than EndoRepair. Conclusion: According to the results of this study, NeoMTA and Biodentine can be used safely as apical plug material in single-session apexification in immature teeth. The BC RRM-FS, on the other hand, provided an acceptable sealing, although not as successful as the NeoMTA. However, the sealing properties of Endo Repair need to be improved.Öğe Does childhood chemotherapy affect mandibular bone structures in a lifetime?(Wroclaw Medical Univ, 2022) Kis, Hatice Cansu; Cosgunarslan, Aykagan; Delikan, Ebru; Aksu, SeckinBackground. Chemotherapy, one of the most important treatment modalities for treating childhood cancers, is a major cause of bone loss in patients and survivors.Objectives.This study aimed to evaluate mandibular bone structures in childhood cancer survivors (CCSs) by means of fractal dimension (FD) analysis and the Klemetti index (KI), and to compare them with regard to the control group.Material and methods. In this retrospective study, the panoramic radiographs of 49 CCSs were included as the study group and the panoramic radiographs of 49 cancer-free volunteers were included as the control group. Based on the panoramic radiographs, FD and KI were determined.Results. No significant differences were observed between the study and control groups in terms of mean FD values for regions of interest (ROIs) ROI_1, ROI_2 and ROI_3 (p = 0.750, p = 0.490 and p = 0.910, respectively). The mean FD values for ROI_1 for the study and control groups were 1.08 +/- 0.18 and 1.07 +/- 0.14, respectively. The mean FD values for ROI_2 for the study and control groups were 1.11 +/- 0.13 and 1.09 +/- 0.13, respectively. The mean FD values for ROI_3 for the study and control groups were 1.15 +/- 0.14 and 1.15 +/- 0.15, respectively. Statistically significant differences between the study and control groups were noted only in the distribution of the KI categories (p = 0.015).Conclusions. Childhood chemotherapy may affect mandibular bone structures during a lifetime. The Klemetti index should be considered a useful clinical diagnostic tool for the examination of mandibular bone structures.Öğe Does repeated autoclave sterilization cause changes in the color and fragility of fiberglass reinforced resin crowns?(BMC, 2023) Delikan, Ebru; Caliskan, Secil; Caliskan, Ahmet; Ozdemir, CananBackgroundSince the effects of sterilization on the Fiberglass Reinforced Resin Crowns (FRRCs) is not well-known the aim of current study was to evaluate the effects of autoclave sterilization on the fracture resistance, color stability, and surface composition of FRRCs.MethodsA total of 48 crowns were used. The crowns were divided into three groups according to the sterilization number: no sterilization (Control Group), one sterilization (Group 1), and four sterilizations (Group 2). The microstructure of the three crowns from each group was evaluated using scanning electron microscopy (SEM) and energy-dispersive X-ray (EDX) spectroscopy. Thirteen FRRCs from each group were first used for color stability testing and then for the fracture resistance analysis. One-way analysis of variance (ANOVA), one-way repeated measures ANOVA, and paired t-tests were used in the statistical analysis.ResultsEDX results revealed that the weight% of surface silicon atoms in group 2 was significantly higher. Some crack lines could be observed on the SEM images. Statistically significant differences were found in color stability following the first and fourth sterilization cycles (p < .01). The increase in the sterilization cycle did not statistically decrease the fracture resistance of the FRRCs (p = .055); however, overall, a decreasing trend was observed in fracture resistance as the sterilization cycle increased.ConclusionsAutoclave sterilization caused some changes in the surface elemental composition and surface morphology of FRRCs. Avoiding unnecessary FRRC trials is important to reduce the number of sterilizations.Öğe Ebeveynlerin Dental Tedavide Genel Anestezi Öncesi Anksiyete Durumu ve Genel Anestezi Hakkında Bilgi Düzeylerinin Ölçülmesi(2021) Küçük, Ayşe Özcan; Delikan, Ebru; Gümüş, HüsniyeAmaç: Bu çalışmanın amacı, genel anestezi altında dental tedavileri yapılacak çocukların ebeveynlerinin genel anestezi ile ilgili bilgidüzeylerini ve preoperatif anksiyete düzeylerini değerlendirmektir.Yöntem: Çalışmaya Erciyes Üniversitesi’ne dental tedaviler için başvuran ve genel anestezi endikasyonu koyulan çocuk hastalarınebeveynlerini dâhil edilmiştir. Çocukları ameliyathaneye alındıktan hemen sonra ebeveynlerin bilgi düzeyleri modifiye Standart AnesteziÖğrenme Testi (SALT) ile anksiyete düzeyleri modifiye Vizüel Analog Skala (VAS) ile değerlendirilmiştir.Bulgular: Anketi 148 kadın (%63), 87 erkek (%37) olmak üzere toplam 235 ebeveyn tamamladı. Katılımcılar en fazla 31-40 yaş aralığında idi(%54,9). Eğitim durumlarına göre ebeveynlerin çoğunluğunu lise mezunları oluşturuyordu (%39,1). Ebeveynlerin %64,3’ünün daha öncedenanestezi deneyimi vardı. Ebeveynlerinin anksiyete skorları ile genel anestezi deneyimi, eğitim düzeyi, çocuk sayısı arasında anlamlı bir farkbulunamadı (p>0,05). Kadınların anksiyete düzeyi erkeklere göre anlamlı olarak daha yüksekti (p<0,05). 50 yaş üzeri ebeveynlerin anksiyetedüzeyi gençlere göre anlamlı olarak daha düşüktü (p<0,05). Ebeveynlerin %56,6’sı genel anestezinin nasıl başlatıldığını ve %55,7’si genelanestezi öncesi damar yolunun neden açıldığını bilmekteydi. Ayrıca katılımcıların sadece %35,7'si anestezi uzmanının doktor olduğununfarkındaydı.Sonuç: Bu çalışma ebeveynlerin pediatrik dental tedavilerde sıkça uygulanan genel anestezi uygulamaları ile ilgili bilgilerinin yeterliolmadığını ve değişen düzeylerde preoperatif anksiyeteye sahip olduklarını göstermiştir. Bu nedenle sağlık çalışanları ameliyat öncesiebeveynlerin korku ve endişelerini gidermek için daha fazla bilgilendirme yapmalıdır.Öğe Efervesan C vitaminlerinin kompozit rezinlerin yüzey pürüzlülüğü ve renk stabilitesi üzerine etkisi(2022) Delikan, Ebru; Özgen, Süleyman; Sağsöz, Ayşe"Amaç: Bu çalışmanın amacı, efervesan C vitamin tabletlerinin kompozit rezinlerin renk değişimine ve yüzey pürüzlülüğüne olan etkisinin araştırılmasıdır. Gereç Ve Yöntem: Her bir restoratif materyal grubu (G-eanial posterior, Solidex) için için teflon kalıplardan (8 mm çap ve 2mm derinlik) 30’ar adet örnek hazırlandı. Örnekler LED cihazı (Planmeca Lumion, Planmeca Oy, Helsinki, Finlandiya) ile 20 saniye boyunca polimerize edildi. Post-polimerizasyon için distile su içerisinde 24 saat inkübe edildi. Her bir numunenin başlangıç renk değeri spektrofotometre cihazı (Vita Easyshade V, Vita Zahnfabrik, Almanya), başlangıç yüzey pürüzlülük değeri ise SJ-411 pürüzlülük test cihazı (Mitutoyo Surftest Analyzer) ile ölçüldü. Örnekler çalışma gruplarında iki farklı efervesan C vitamini solüsyonuna (Redoxon ve Ocean efervit) ve kontrol grubunda distile suya daldırılma durumuna göre rastgele 3 gruba ayrıldı. 28 günlük test periyodu boyunca günde 2 dakika numunelerin daldırılmasının ardından örnekler distile su ile yıkandı, nazikçe kurutuldu. Renk ve yüzey pürüzlülük ölçüm prosedürleri tekrarlandı. Her bir örnek için renk değişim değeri (?E00) ve yüzey pürüzlülük analizi için ortalama Ra değerleri hesaplandı. Ölçülen parametrelerin istatistiksel analizi için tek yönlü ANOVA kullanıldı. İkili karşılaştırmalar için Tukey testi ve bağımlı değişkenler için t testi yapıldı (p=0.05). Bulgular: Renk değişimi (?E00) sonuçları istatistiksel olarak incelendiğinde; restoratif materyalden bağımsız olarak en yüksek ?E değerleri Redoxon grubunda gözlendi. Her iki çalışma grubundaki G-eanial posterior numuneleri ve Redoxon'da inkübe edilen Solidex numuneleri, klinik olarak kabul edilemez renk değişikliği gösterdi. Ortalama pürüzlülük değerleri (Ra) istatistiksel olarak analiz edildiğinde, tüm gruplarda eşik yüzey pürüzlülüğünün (Ra=0,2 ?m) üzerinde pürüzlülük tespit edildi. Ancak gruplar arasında ilk ve ikinci ölçümler arasında pürüzlülük açısından istatistiksel olarak anlamlı fark bulunmadı (p>0.05). Sonuçlar: Efervesan C vitaminleri, test edilen kompozit rezinlerin renk değişiminde önemli ölçüde arttırırken, yüzey pürüzlülüğünde istatistiksel olarak anlamlı farklılığa yol açmamıştır."Öğe Effect of Different Surface Coating Applications on The Surface Roughness and Color Stability of Resin-Based Composites: An SEM Study(Ataturk Universitesi, 2024) Ertürk-Avunduk, Ayşe Tuğba; Delikan, EbruObjective: To investigate color change and surface roughness of resin-based composites treated with a surface coating agent. Methods: Forty specimens were prepared from each resin [G-ænial Posterior (microhybrid composite/GP) and SDR flow+(bulk-fill composite/SDR)]. Following baseline color and surface roughness (Ra) measurements, the specimens were randomly divided into 4 groups (n=10) according to surface coating agents [(Permaseal, Biscover LV, Prebond SE, and control group]. Following the application procedures, color and roughness measurements were repeated. The specimens were discolored for 144 hours in a coffee solution, renewing daily. Final measurements were performed. Color change values (?E00) and Ra were calculated. Surface topography was determined using scanning electron microscopy. Two-way analyses of variance, Tukey’s post-hoc test and Student t-test were performed, with a p<0.05 regarded as indicative of significance. Results: SDR showed more color change and surface roughness than GP and both materials presented unacceptable (AT>1.8) and perceptible (PT>0.8) discoloration. The highest discoloration was observed for Permaseal and Prebond SE in terms of ?E2 and ?E3. GP-Biscover LV, SDR-Prebond SE combinations showed the lowest and clinically acceptable (AT<1.8) ?E values. There were no significant differences between surface coating agents in terms of surface roughness (p>0.05). GP-Permaseal and SDR-Prebond SE combinations were exhibited less surface roughness. Conclusion: A bulk-fill composite is more prone to discoloration than a microhybrid composite. At each period, the bulk-fill composite exhibited greater surface roughness than the microhybrid composite. Biscover LV showed more acceptable results in terms of color stability and roughness than other surface coating agents (Permaseal and Prebond SE). © 2024, Ataturk Universitesi. All rights reserved.Öğe Effect of effervescent C vitamins on the surface roughness and color stability of composite resins: A SEM study(Deneysel, Biyoteknolojik, Klinik ve Stratejik Sağlık Araştırmaları Derneği, 2023) Avunduk, Ayşe Tuğba Ertürk; Delikan, EbruObjective: To investigate the effect of effervescent vitamins C on the color change and surface roughness of resin composites. Methods: 30 specimens (8 mm*2 mm) were prepared for each restorative material (G-ænial Posterior, Solidex). The specimens were polymerized with LED device for 20 seconds and were incubated in distilled water for 24 hours for post-polymerization. Initial color values were measured using a spectrophotometer (Vita Easyshade V, Vita Zahnfabrik, Bad Säckingen, Germany), and initial surface roughness was measured with roughness tester (Mitutoyo SJ-410 Surftest Analyzer). The specimens were randomly divided into 3 groups according to their immersion solution (Redoxon, Ocean efervit, and distilled water). During the 28-day test period, the specimens were immersed in the solutions 2 times a day. Color changes and surface roughness measurement procedures were repeated. Data were subjected to One-way ANOVA, Tukey test, and t-test (p=0.05). Results: When the color change (?E00) results are examined statistically; the highest ?E values were observed in the Redoxon group, regardless of the restorative material. G-ænial Posterior specimens from both study groups and Solidex specimens incubated in Redoxon showed clinically unacceptable discoloration. When the average roughness values (Ra) are analyzed statistically, roughness values above the threshold surface roughness (Ra=0.2 µm) was detected in all groups. However, no statistically significant difference between groups (p>0.05). Conclusion: Despite the fact that effervescent C vitamins significantly increased the discoloration of the tested composite resins, not cause a statistically significant difference in surface roughness.Öğe Effect of effervescent C vitamins on the surface roughness and color stability of composite resins: A SEM study.(Journal of Biotechnology and Strategic Health Research, 2023) Delikan, EbruObjective To investigate the effect of effervescent vitamins C on the color change and surface roughness of resin composites. Methods 30 specimens (8 mm*2 mm) were prepared for each restorative material (G-ænial Posterior, Solidex). The specimens were polymerized with LED device for 20 seconds and were incubated in distilled water for 24 hours for post-polymerization. Initial color values were measured using a spectrophotometer (Vita Easyshade V, Vita Zahnfabrik, Bad Säckingen, Germany), and initial surface roughness was measured with roughness tester (Mitutoyo SJ-410 Surftest Analyzer). The specimens were randomly divided into 3 groups according to their immersion solution (Redoxon, Ocean efervit, and distilled water). During the 28-day test period, the specimens were immersed in the solutions 2 times a day. Color changes and surface roughness measurement procedures were repeated. Data were subjected to One-way ANOVA, Tukey test, and t-test (p=0.05). Results When the color change (?E00) results are examined statistically; the highest ?E values were observed in the Redoxon group, regardless of the restorative material. G-ænial Posterior specimens from both study groups and Solidex specimens incubated in Redoxon showed clinically unacceptable discoloration. When the average roughness values (Ra) are analyzed statistically, roughness values above the threshold surface roughness (Ra=0.2 µm) was detected in all groups. However, no statistically significant difference between groups (p>0.05). Conclusion Despite the fact that effervescent C vitamins significantly increased the discoloration of the tested composite resins, not cause a statistically significant difference in surface roughness.Öğe Effect of topical fluoride applications on residual monomer release from resin-based restorative materials(BMC, 2023) Delikan, Ebru; Erturk-Avunduk, Ayse Tugba; Karataş, Özcan; Sacmaci, SerifeBackground: The effects of topical fluoride applications on the release of monomer ingredients from resin-based dental materials by immersion in various extraction solutions are unclear. The aim of this study was to determine the effect of topical fluorides (APF and NaF) on the elution of residual monomers (Bis-GMA, TEGDMA, UDMA, and HEMA) from resin-based materials. Methods: Ninety specimens were prepared, 30 bulk-fill composite resin, 30 nanohybrid universal composite resin, and 30 polyacid-modified composite resin (compomer). These were randomly divided into three groups based on fluoride application procedures. Each specimen was kept in 75% ethanol solution, and residual monomers released from materials were analyzed using high-performance liquid chromatography (HPLC) after 10 min, 1 h, 24 h, and 30 days. The groups were compared using the Mann Whitney U and Kruskal Wallis tests. Measurements were analyzed using the Friedman and Wilcoxon signed-rank tests. Results: Fluoride applications generally had no considerable effect on the amount of residual monomer released from resin-based restorative materials. The amount of monomer release after topical APF application was similar to the release in the control group and was lower than the release in the NaF group. The release of monomers from the resin-based material used in the study did not approach toxic levels at the applied time intervals. The compomer released lower amounts of monomer than other resin-based materials. Conclusions: Fluoride applications do not increase monomer release from resin-based restorative materials. However, compomers should be employed by clinicians due to their lower monomer release compared to other resin restorative materials. The release of monomers from all the resin-based materials did not approach toxic levels at the applied time intervals.Öğe Effect of whitening concepts on surface roughness and optical characteristics of resin-based composites: An AFM study(Wiley, 2024) Erturk-Avunduk, Ayse Tugba; Delikan, Ebru; Cengiz-Yanardag, Esra; Karakaya, IzgenThe aim of this study was to evaluate the effects of various whitening agents on the surface roughness and optical characteristics of different types of resin composite restorations. Fifty specimens were prepared for each resin [G-ae nial Posterior (GP), SonicFill-2 (SF), Solidex (SDX), and Nova Compo HF (NC)]. Following baseline color and surface roughness (Ra) measurements, the specimens were randomly divided into 5 groups (n = 10/group) according to whitening concepts: control (distilled water), in-office bleaching [OB-(Opalescence Boost)], at-home bleaching [HB-(Opalescence PF)], whitening toothpaste [WT-(Signal White Now)], and whitening mouthwash [WM-(Listerine Advanced White)]. ?E-00, ?TP00, and ?WID values were calculated before and after the whitening procedure with a spectrophotometer using the CIEDE2000 formula. Surface roughness measurements were repeated. The surface topography was determined using atomic force microscopy. Two-and three-way analyses of variance and Tukey's post-hoc test were performed, with p < 0.05 regarded as indicative of significance. No significant differences were detected among the resin composite materials in terms of the ?E-00 values (p > 0.05). Color change of all resin materials was above the AT threshold (>1.8) and the PT threshold (>0.8). All restorative materials presented acceptable (AT<2.62) TP00 values. Solidex specimens demonstrated the lowest W-ID values compared to the other composites. There were significant differences among the whitening procedures with respect to ?E-00, ?TP00, and W-ID values (p < 0.001). SF/WT combination showed the highest and clinically unacceptable ?E-00 values. The highest roughness values were observed in the SDX specimens and the combination of SDX/OB. The effect of whitening agents on the optical characteristics and surface roughness of restorative materials depends on the type of material, agent, and time.Öğe Endodontik olarak enfekte süt ve kalıcı dişlerin mikrobiyotası(2022) Delikan, Ebru; Kesim, Bertan; Göker, Parisa; Bulut, Adive BegülKarışık dişlenme döneminde ağızda bulunan daimi ve süt dişlerin endodontik mikrobiotasındaki çeşitliliği 16S rRNA gen sekanslaması ve QIIME 2 analizi kullanarak incelemekti. Spontan ağrı şikayeti ile diş tedavisi olmak için başvuran 30 çocuk hastanın endodontik olarak enfekte süt ve daimi molar dişlerinin pulpasından paper point kullanılarak mikrobiyal örnekler alındı. Örneklerden bakteri DNA’sı ekstraksiyonu yapıldı. 16S rRNA geninin hiperdeğişken V3-V4 bölgesinin incelenmesine dayalı olarak QIIME 2 analizine tabi tutuldu. Alfa ve beta çeşitlilik analizi için filogenetik ağaç oluşturuldu. Gruplar arasında bakteri bolluğu Wilcoxon testi kullanılarak incelenmiştir. Gözlemlenen operasyonel taksonomik birimler (OTU'lar), Shannon indeksi, Faith'in filogenetik çeşitliliği ve Eşitlik; alfa çeşitlilik metrikleri olarak hesaplandı. Ağırlıklı UniFrac, ağırlıksız UniFrac, Bray Curtis, Jaccard, UniFrac mesafe tabanlı metrik olmayan çok boyutlu ölçekleme ve temel bileşen analizi (PcoA); beta çeşitlilik metrikleri olarak hesaplandı. İstatistiksel analiz R yazılımı kullanılarak yapıldı. Çalışmamızdaki endodontik olarak enfekte daimi ve süt dişlerin endodontik mikrobiotasında 14 filum, 89 familya ve 236 cins belirlendi. Firmicutes, hem süt hem de daimi diş kök kanallarında en sık saptanan filumdu. Bacteroides ve Proteobacteria süt dişlerinde, Actinobacteria ve Verrucomicrobia ise daimi dişlerde daha yaygındı. Süt ve daimi diş kanallarında tür zenginliği ve eşitliği açısından istatistiksel olarak anlamlı bir fark yoktu (p>0.05). Ancak filogenetik bir farklılık bulundu. Anaeroblar ağırlıklı olarak hem süt hem de daimi dişlerde bol miktarda idi. Ancak süt dişlerinde daimi dişlere göre anaerob oranının daha yüksek, aerob veya fakültatif anaerob oranının ise daha düşük olduğu görüldü. Bu çalışma, endodontik olarak enfekte olmuş süt ve daimi dişlerde mikrobiyota bileşiminin kapsamlı bir değerlendirmesini sağlayarak, kök kanal enfeksiyonlarının kökeni hakkında daha derin bir fikir vermektedir. Enfekte süt dişlerinin pulpasında kalıcı dişlere göre daha fazla sayıda operasyonel taksonomik birim bulunmuştur. Endodontik olarak enfekte süt ve daimi dişlerin mikrobiyal zenginliği ve eşitliği oldukça benzer bulunmasına rağmen, bazı filogenetik farklılıklar vardı.Öğe Evaluation of Methods for Determining Working Length in Root Canal Treatment for Primary Molars: An In-Vivo Study(Aves, 2021) Caliskan, Secil; Delikan, Ebru; Cantekin, KenanBACKGROUND/AIMS The aim of this study was to evaluate the effectiveness of tactile sensation, digital periapical radiography, and two varieties of electronic apex locators (EALs) as methods of determining working length in root canal treatment for primary molars. MATERIAL and METHODS In this study, 30 infected mandibular primary second molar teeth in 12 children aged 5-8 years were analyzed. The working length was determined for each tooth using the tactile sensation, digital radiography, the ProPex Pixi (R), and Ipex (R) apex locators separately. RESULTS The mean root canal measurements taken using tactile sensation, Ipex, radiography, and Propex Pixi were 11.02 +/- 2.05 mm, 9.47 +/- 1.71 mm, 9.73 +/- 1.57 mm, and 8.85 +/- 1.58 mm, respectively. The radiographic method yielded results that were similar to those derived with the apex locators but differed from the measurements obtained via tactile sensation. CONCLUSION EALs can be used to safely determine the working length in root canal treatment for primary molars.Öğe Evaluation of Occupational Burnout Levels Of Dental Nurses(Deneysel, Biyoteknolojik, Klinik ve Stratejik Sağlık Araştırmaları Derneği, 2019) Çalışkan, Seçil; Delikan, Ebru; Kızılaslan, SenaObjective: To investigate of occupational burn out levels of in dental nurses who working in dental institutions.Methods: 100 dental nurses working at various institutions and who agreed to participate this study were included. The questionnaire was used to determine the vocational burnout levels of dental assistants. The questionnaires were sent by e-mail. All statistical analyses were performed using SPSS version 22.0.Results: 75% of the individuals participating in the survey are female and 25% are male. Average age was 32 years-old, working time was average of 40 hours per week. . It was determined that 6.6% of the participants had 0-1 years, 40.8% 2-4 years, 26.3% 5-9 years 26.3% 10 and more years of professional experience. 40.8% of the dental nurses observed burn out.Conclusion: Dental nurses involved in this study constitute the occupational group at risk for burnout. Keywords: Burnout, Chronic fatigue, Dental NurseÖğe Evaluation of the quality of YouTube™ videos about pit and fissure sealant applications(Wiley, 2023) Erturk-Avunduk, Ayse Tugba; Delikan, EbruAim: To evaluate the content and quality of YouTube (TM)? videos about pit and fissure sealant application. Methods: The keywords fissure sealant and pit and fissure sealant were used to search for YouTube (TM)? content, after the first 300 video results were evaluated. Considering the exclusion criteria, a final sample of 110 videos was obtained, which were analysed in terms of the number of views, duration in minutes, the number of subscribers, the total number of likes and dislikes, the number of comments, days elapsed since upload, the interaction index, and the viewing rate. Global Quality Scoring (GQS) index was also used as a second evaluation method and videos were classified according to the quality of information that it contained as follows: good, moderate, and poor. Results: Most of the videos were uploaded by dentists/specialists. Among them, 14 videos had good quality, 63 were of moderate quality, and 33 were poor informative. The good-quality videos had statistically significantly higher interaction index and viewing rates, and the majority of the videos had a GQS-2 score. The viewing rate was positively correlated with duration and the number of views, likes and dislikes, comments, and subscribers. Conclusion: There is considerable variability in the scientific accuracy and quality of health information on the Internet. While there are videos that provide sufficient health information, there are also videos that contain insufficient or even incorrect information. Dental care professionals should be aware of misinformation found on YouTube (TM)? and ensure that patients always have access to accurate and reliable information.Öğe Impact of acid and laser etching of enamel on microleakage in different adhesive systems(Springer London Ltd, 2024) Yavuz, Sevim Atilan; Avunduk, Ayse Tugba Erturk; Karataş, Özcan; Kilinc, Nazire Nurdan Cakir; Delikan, EbruThis study aimed to evaluate the microleakage of light-cured and self-cured adhesives on enamel surfaces selectively etched with Er, Cr: YSGG laser or 35% phosphoric acid. A total of 60 class V cavities were prepared 1 mm above the cemento-enamel junction (CEJ). The specimens were randomly divided into six groups. Group 1: Clearfil SE Bond with no conditioning, Group 2: Tokuyama Universal Bond with no conditioning, Group 3: Clearfil SE Bond conditioned with 35% phosphoric acid, Group 4: Tokuyama Universal Bond conditioned with 35% phosphoric acid, Group 5: Clearfil SE Bond conditioned with Er, Cr: YSGG laser and Group 6: Tokuyama Universal Bond conditioned with Er, Cr: YSGG laser. Microleakage was evaluated qualitatively (visually) and quantitatively (ImageJ). The data were analyzed using IBM SPSS V23 and submitted to Kruskal-Wallis and Wilcoxon tests. The significance level was set at p < 0.05. In all evaluation methods, the microleakage scores exhibit significant differences (p*<0.001). Group 1 and Group 3 exhibited similar and lower microleakage values than the Group 5. In the occlusal margin, the microleakage values were similar in Group 2, Group 4, and Group 6, whereas in the gingival margin Group 4 showed significantly lower leakage compared to Group 2. Regardless of the etching protocols and adhesive systems used, less microleakage was observed on the occlusal surface than on the gingival surface. Phosphoric acid etching provides better results than laser etching for enamel surface treatment on both occlusal and gingival surfaces.Öğe In-vitro Evaluation of Topical Fluoride on the Optical Properties, Surface Texture, and Hardness of Restorative Materials(Int Soc Fluoride Research, 2024) Delikan, Ebru; Erturk-Avunduk, Ayse Tugba; Karataş, ÖzcanPurpose: This study aims to evaluate the interactions of fluoride-containing gels and varnishes on the optical properties and surface texture of composite resins, compomers, and bulk-fill composite resins. Thus, it seeks to address the current gap in the literature regarding the effect of fluoride agents on bulk-fill restorative materials. Methods: Using Teflon moulds, 50 specimens of 6 mm diameter and 2 mm thickness were produced for each of the G-ae nial Posterior, FiltekTM One Bulk-Fill and Dyract-XP materials. Baseline color and surface roughnesss measurements of the specimens were performed. The specimens were subjected to the following applications: Study groups (Topex NaF gel, Topex APF gel, ProShield varnish, and MI varnish with RECALDENTTM) and Control group (distilled water). Color and surface roughness measurements were repeated after the application period. The surface microhardness of the specimens (study groups and control group) was measured using Vickers microhardness tester. Statistical analyses, including two-way analyses of variance (comparison of color, whiteness and microhardness parameters) and three-way analyses of variance (comparison of surface roughness parameter), and Pearson's correlation test (the relationship between surface roughness and color change and surface roughness), were applied. Results: The restorative material significantly (p-value<0.001) influenced the color changes (Delta E00), with the FiltekTM One Bulk-Fill/Topex APF gel interaction yielding the highest Delta E00 average value (2.1 +/- 1.15). Materials and fluoride agents exerted significant effects on the Whiteness Index (Delta WID) for Dentistry (pvalue<0.001). Dyract-XP displayed lower initial surface roughness (1.05 +/- 1.38), with all materials exhibiting comparable values after fluoride treatment. Microhardness varied among the materials, with FiltekTM One Bulk-Fill having the highest total value (65.39 +/- 2.67) and G-ae nial Posterior having the lowest total (42.97 +/- 3.32) value. When considering the interaction of restorative materials, fluoride treatment, Topex APF gel-treated G-ae nial Posterior showed the lowest (40.56 +/- 1.78) microhardness, whereas FiltekTM One Bulk-Fill showed the highest (65.06 +/- 1.88) values. Conclusions: Topical fluoride agents induce alterations in the color, roughness, and hardness of restorative materials, depending on the material type, fluoride agent, and duration of application.
