Person: ŞENOL, AYŞE ASLI
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ŞENOL
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AYŞE ASLI
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Publication Open Access Microleakage and Marginal Integrity of Ormocer/Methacrylate-Based Bulk-Fill Resin Restorations in MOD Cavities: SEM and Stereomicroscopic Evaluation(2023-03-01) ŞENOL, AYŞE ASLI; TARÇIN, BİLGE; KAHRAMANOĞLU, ERKUT; YILMAZ ATALI, PINAR; Şenol A. A., Karabulut Gencer B., Tarçın B., Kahramanoğlu E., Yılmaz Atalı P.This in vitro study aimed to compare the microleakage and marginal integrity of methacrylate/ormocer-based bulk-fill composite (BFC) restorations used in cervical marginal relocation with two different layering thicknesses in mesio-occlusal-distal (MOD) cavities exposed to thermomechanical loading. Standard MOD cavities were prepared in 60 mandibular molars and assigned into three groups: x-tra fil/AF + x-tra base/XB, Tetric N-Ceram Bulk Fill/TNB + Tetric N-Flow Bulk Fill/TFB, and Admira Fusion x-tra/AFX + Admira Fusion x-base/AFB. Each group was further divided into two subgroups (2 mm and 4 mm) based on the thickness of flowable BFCs (n = 10). The specimens were subjected to thermo-mechanical loading (240,000 cycles) and immersed in 0.2% methylene blue. Following mesiodistal sectioning, the specimens were examined under stereomicroscope (×25) and scored (0–3) for microleakage. Marginal integrity was examined using a scanning electron microscope (SEM). Descriptive statistical methods and the chi-square test were used to evaluate the data (p < 0.05). While there was no statistically significant difference in gingival cement microleakage in the XB and AFB specimens with a 4 mm thickness, microleakage was significantly increased in the TFB specimen (p = 0.604, 0.481, 0.018 respectively). A significantly higher amount of score 0 coronal microleakage was detected in the AFX2 mm + AFB4 mm compared to the TNB2 mm + TFB4 mm (p = 0.039). The SEM examination demonstrated better marginal integrity in groups with 2 mm thick flowable BFCs. Ormocer and methacrylate-based materials can be used in marginal relocation with thin layers. Keywords: bulk-fill composite; layering thicknesses; marginal relocation; microleakage; ormocerPublication Open Access Tarihi geçmiş ompozit rezinleri kullanmak mümkün mü? : FTIR analizi(2023-01-01) DOĞU, BENGÜ; ŞENOL, AYŞE ASLI; TARÇIN, BİLGE; YILMAZ ATALI, PINAR; ÖZMEN S., DOĞU KAYA B., ŞENOL A. A., KORKUT B., TARÇIN B., YILMAZ ATALI P.Amaç: Bu çalışmanın amacı; son kullanma tarihleri 1 yıl, 2 yıl ve 3 yıl geçmiş rezin kompozitlerin (RK) dönüşüm derecelerini karşılaştırarak kullanımlarındaki güven aralığını değerlendirmektir. Materyal ve Metod: Üç farklı RK'den (Herculite XRV-Ultra A2-dentin, son kullanma tarihi 3 yıl ve 1 yıl geçmiş; Herculite Classic A2, son kullanma tarihi 2 yıl geçmiş; Kerr) 9 adet disk (8 x2 mm) hazırlandı (n=3). RK silikon kalıplara yerleştirildi, her iki tarafı şeffaf bantlar ile kapatıldı ve LED ışıklı cihaz ile (Valo, Ultradent) ile 20 sn parmak basıncı altında polimerizasyonu takiben numuneler 37°C'de 24 saat distile suda bekletildi. Dönüşüm derecesini (%DC) belirlemek için Fourier Dönüşümü Kızılötesi Spektrometre (FT-IR, JASCO) ile örnekleme kullanılarak polimerize olmuş ve olmamış kompozitler üzerinde spektral analizler yapıldı. Ortaya çıkan FT-IR spektrumu, 20 °C ortam sıcaklığında 4000–400 cm-1 spektral aralığında kaydedildi; kullanılan çözünürlük dört tarama ile 4 cm-1 ’dir. Veriler SPSS (SPSS Inc.) ile tek yönlü varyans analizi (ANOVA) ve Tukey testleri kullanılarak analiz edildi. Anlamlılık düzeyi p<0,05 olarak alındı. Bulgular: En yüksek ortalama %DC, 1 yıllık son kullanma tarihi geçmiş RK grubu için kaydedilirken (H-6: 68,80 ± 4,544), bunu 2 yıllık son kullanma tarihi geçmiş RK grubu (H- 12: 68,268 ± 2,695) takip etmiştir. En düşük ortalama %DC 3 yıl üstü RK grubu için kaydedilmiştir (H-24: 68.032 ± 4.641). Üç grup arasında %DC değerleri açısından istatistiksel olarak anlamlı bir fark bulunmadı (P=0,096). Sonuç: Bu çalışmanın sınırları dahilinde; son kullanma tarihleri üzerinden 1, 2 ve 3 yıl geçmiş kompozitler benzer %DC sonuçları gösterdi. Klinisyenlerin, üreticiler tarafından önerilen son kullanım tarihi talimatlarını takip etmeleri gerekmektedirPublication Metadata only Degree of Conversion of Luting Materials Under CAD/CAM Blocks(2023-07-03) DOĞU KAYA, BENGÜ; YILMAZ ATALI, PINAR; ŞENOL, AYŞE ASLI; TARÇIN, BİLGE; KAHRAMANOĞLU, ERKUT; DOĞU KAYA B., Öztürk S., YILMAZ ATALI P., ŞENOL A. A., TARÇIN B., KAHRAMANOĞLU E.Introduction: The aim of this in vitro study was to evaluate the degree of conversion of dual-cured luting cement (Bifix QM, Voco) and flowable composite (GrandioFlow, Voco) under lithium disilicate glass-ceramic (Emax, Ivoclar Vivadent) and hybrid (Grandio Blocs, Voco) CAD/CAM blocks with different thicknesses. Material and Methods: Disc-shaped CAD/CAM blocks with a diameter of 8 mm and two different thicknesses of 1.5 and 2 mm were used in this study. Bifix QM and GrandioFlow (n=3, per material) were polymerized through 1.5- and 2-mm thick CAD/CAM materials. Twenty-four samples with standard thicknesses were achieved by placing 2 adhesive tapes (3M) between the glass plate and mylar strip was used in this set up. The luting cement and flowable composite were polymerized from the upper surface of the blocks using a LED-curing unit (1000 mw/cm2 , Valo Cordless, Ultradent) by closing the periphery. Samples were stored in distilled water at 37°C for 24 hours. Luting materials (100 µm thickness) were examined by Fourier Transform Infrared Spectroscopy (Spectrum Two FT-IR Spectrometer, PerkinElmer) analysis and the degree of conversion (DC) were calculated. Data were analyzed with SPSS V23, One-way Anova and Kruskal Wallis tests with the significance level p<0.05. Results: No significant difference was found in DC between Bifix QM (34.68 ± 13.21; 24.94 ± 1.93) and GrandioFlow (41.33 ± 2.28; 38.07 ± 4.57) when using 1.5 mm Emax (p=0.476) and GrandioSo (p=0.050), respectively. DC of GrandioFlow (37.94 ± 5.33) was significantly higher than Bifix QM (23.36 ± 2.03) with Emax-2 mm (p=0.011). DC of Bifix QM was found to be similar under 1.5 mm (p=0.306) or 2 mm (p=0.051) thicknesses of both Emax and GrandioSo. The difference in DC values of GrandioFlow did not show statistically significance for 1.5 mm and 2 mm thicknesses under GrandioSo and Emax (p=0.275; 0.488, respectively). Conclusion: Within the limitations of this in vitro study, it is important to select the proper luting material considering the structure and thickness of the CAD/CAM restoration, along with manufacturers’ instructions. Keywords: CAD/CAM block, degree of conversion, dual-cure resin cement, flowable composite, lithium dislocate glass-ceramic, luting material, nano-ceramic hybridPublication Open Access Assessment of micro-hardness, degree of conversion, and flexural strength for single-shade universal resin composites(2022-11-01) YILMAZ ATALI, PINAR; TARÇIN, BİLGE; ŞENOL, AYŞE ASLI; TÜTER BAYRAKTAR, EZGİ; KORKUT, BORA; BİLGİN GÖÇMEN, GÜLÇİN; TAĞTEKİN, DİLEK; TÜRKMEN, CAFER; DOĞU KAYA, BENGÜ; MANAV, AYBİKE; YILMAZ ATALI P., DOĞU KAYA B., MANAV ÖZEN A., TARÇIN B., ŞENOL A. A. , TÜTER BAYRAKTAR E., KORKUT B., BİLGİN GÖÇMEN G., TAĞTEKİN D., TÜRKMEN C.© 2022 by the authors.Single-shade universal resin composites (SsURC) are preferred in clinical practice to reduce time for shade selection and obtain good esthetic results. In this study, the static mechanical properties of seven new SsURCs were investigated, their spectral analyzes were performed and scanning electron microscopy (SEM) evaluations were presented. Charisma Diamond One/DO, Admira Fusion x-tra/AFX, Omnichroma/OC, OptiShade/OS, Essentia Universal/EU, Zenchroma/ZC, Vittra APS Unique/VU were used in a three-point bending test to determine flexural strength (FS) and elastic modulus (EM); Vickers micro-hardness (VHN) and hardness-ratio (HR) were performed with a micro-hardness tester from top/bottom after 24-h/15-days of storage in distilled water at 37 °C (±1 °C). The degree of conversion (DC) was assessed by using Fourier transform infrared spectroscopy (FTIR). The structure of the resin matrix and filler content were assessed by SEM. Data were analyzed using IBM SPSS V23 and the R program and the significance level was taken as p < 0.05. The main effect of the tested SsURCs was found to be statistically significant on FS, EM, VHN, and DC values (p < 0.001). Bis-GMA free SsURCs (AFX, DO, VU) showed better DC and HR except for OC. All seven tested SsURCs conform to the requirements of ISO standards for dental resin composites for all tested categories.Publication Metadata only Efervesan multi̇vi̇tami̇ni̇n nanohi̇bri̇t kompozi̇tleri̇n yüzey pürüzlülüğü üzeri̇ne etki̇si̇(2021-11-25) ŞENOL, AYŞE ASLI; YILMAZ ATALI, PINAR; TARÇIN, BİLGE; Acar E., ŞENOL A. A., YILMAZ ATALI P., TARÇIN B.Publication Open Access Microleakage and Marginal Integrity of Direct and Indirect Composite Resin Restorations in MOD Cavities After Thermo-Mechanical Loading(MARMARA UNIV, INST HEALTH SCIENCES, 2021-05-10) ŞENOL, AYŞE ASLI; Senol, Ayse Asli; Atali, Pinar Yilmaz; Kahramanoglu, ErkutObjective: The aim of this in vitro study is to compare the microleakage of mesial-occlusal-distal (MOD) composite resin restorations made by using CAD/CAM block and methacrylate/ormocer-based direct resin composites after thermo-mechanical loading. Methods: Standard 40 noncarious human third mandibular molars were selected for the study. Standardized MOD (3x4x2mm) cavities were prepared on the mesial and distal sides. The gingival margin was placed above the cementoenamel junction (CEJ) on the mesial side and below the CEJ on the distal side. The prepared samples were divided into three experimental groups [indirect group-GrandioBlock (GB), directmethacrylate group-TetricN-Ceram+TetricN-Flow (T+TF), direct-ormocer group-Admira Fusion+Admira Fusion Flow (A+AF)] and control group [direct-methacrylate group-GrandioSo+GrandioSoFlow (G+GF)] (n=10). After finishing restorations samples were subjected to 50 N to 240.000 thermo-mechanical cycles (5-55 degrees C, for 60 sec) and kept in 0.2% methylene blue. Samples sectioned longitudinally in the mesiodistal direction with a precision cutting device were examined under stereomicroscope at X8 and X25 and microleakage values were scored. In the evaluation of the data, descriptive statistical methods as well as the chi-square test was used for the comparison of qualitative data. Results: No significant difference was found among the coronal and gingival-enamel microleakage distributions of the groups (p>0.05). A statistically significant difference was observed among the gingival-cementum microleakage distributions of the groups (p=0.003). The distribution of gingival-cement microleakage with the no dye penetration score in the T+TF group was found to be statistically significantly lower than the G+GF and GB groups (p = 0.010, p = 0.001). Conclusion: Under the limitation of this in vitro study; restoring MOD cavities using different matrix structures of the composites could not eliminate the leakage at the gingival seat under CEJ.Publication Metadata only Bulk-fill kompozit rezinlerin antagonist çelik top ve CAD CAM blok karşısında aşınma dirençlerinin karşılaştırılması(2022-11-06) ŞENOL, AYŞE ASLI; KAHRAMANOĞLU, ERKUT; YILMAZ ATALI, PINAR; TÜRKMEN, CAFER; Altuntaş E., Öztürk S., Şenol A. A., Kahramanoğlu E., Yılmaz Atalı P., Türkmen C.Bulk-fill Kompozit Rezinlerin Antagonist Çelik Top ve CAD/CAM-Blok Karşısında Aşınma Dirençlerinin KarşılaştırılmasıEzgi Altuntaş1, Selinsu Öztürk1, Ayşe Aslı Şenol1, Erkut Kahramanoğlu2, Pınar Yılmaz Atalı1, Cafer Türkmen11Marmara Üniversitesi Diş Hekimliği Fakültesi, Restoratif Diş Tedavisi Anabilim Dalı2Marmara Üniversitesi Diş Hekimliği Fakültesi, Protetik Diş Tedavisi Anabilim DalıAMAÇKompozit rezinler, antagonist materyal tarafından mekanik kuvvetlere maruz kaldığında aşınmaktadır. Aşınma sonucu mekanik özellikleri azalmakta, bu nedenle uzun süreli klinik başarıları olumsuz etkilenmektedir. Bu çalışmanın amacı iki farklı bulk-fill kompozit rezinin çelik top ve cad/cam blok karşısında aşınma dirençlerinin karşılaştırılmasıdır.GEREÇLER ve YÖNTEMLERVisCalor-Bulk (VOCO) ve SonicFill 2 (Kerr) bulk-fill kompozitler ile4x10mm boyutlarında 32 adet kompozit disk hazırlandı. Kompozit diskler 20 saniye boyunca VALO (Ultradent) ile polimerize edildi. 4 farklı grene sahip cila diskleri ile cilaları tamamlandık sonra37°C distile suda 24 saat boyunca bekletildi. Örnekler randomize olarak kompozitlere göre 2 gruba ayrıldıktan sonra antagonist materyale göre de 2 alt gruba (n=8) ayrıldılar; Grup-1-VisCalor-Steel (VS), Grup-2-VisCalor-CAD (VC), Grup-3-Sonicfill-Steel (SS), Grup-4-Sonicfill-CAD (SC).Ağız ortamını taklit edebilmek için örneklere termal döngü (5-55°C) ile birlikte dual akslı çiğneme simülatöründe iki gövdeli aşınma testi (120,000 cycles, 49N) (C-S-4; SD-Mechatronik Company) uygulandı. Örnekler, yüklemeden önce ve sonra lazer tarayıcı (LAS-20, SD Mekatronik) ile tarandı. Geomagic programı kullanılarak gruplar arası hacimsel aşınma miktarı analiz edildi.Her gruptan rastgele seçilen bir örnek, taramalı elektron mikroskobu altında değerlendirildi. Veriler iki yönlü ANOVA testi ile incelendi(p=0.05).Publication Metadata only Effect of Polyethylene Fiber on Fracture Resistance of Bulk-fill Composites(2023-07-03) MANAV, AYBİKE; DOĞU, BENGÜ; YILMAZ ATALI, PINAR; KAHRAMANOĞLU, ERKUT; ŞENOL, AYŞE ASLI; TARÇIN, BİLGE; TÜRKMEN, CAFER; MANAV ÖZEN A., DOĞU KAYA B., YILMAZ ATALI P., KAHRAMANOĞLU E., ŞENOL A. A., TARÇIN B., TÜRKMEN C.Introduction: The aim of this in vitro study was to evaluate the fracture resistance of sonic-activated SonicFill3 (SF) (Kerr) and flowable Charisma Bulk Flow ONE (CO) (Kulzer) bulk-fill composites with or without polyethylene-fiber (R) (Ribbond) application. Materials and Methods: Class I cavities (2x2x4mm) were prepared on 40 freshly extracted human premolars of similar size and classified randomly into 4 groups (SF, SF+R, CO, CO+R). The remaining wall thicknesses of the teeth was confirmed to be 2mm. Ribbond fiber (2x2mm) was applied to cavity bases of the acryl-embedded teeth according to manufacturers’ instructions and OptiBond (Kerr) (for SF, SF+R groups) and Gluma Bond (Kulzer) (for CO, CO+R groups) universal adhesives were used. All specimens were restored in a 4mm monolayer with SF and CO. Valo Cordless (Ultradent) LED-curing unit with a power output of 1000 mW/cm2 was preferred for polymerization. Finishing and polishing were completed with the last 2 stages of Sof-Lex discs (Kerr). Restored teeth were stored in distilled water at 37°C for 24 hours. Fracture resistance (FS) and elastic modulus (EM) values were measured with a universal testing device (Shimadzu AG-X, Shimadzu Corp, Japan). Data were analyzed with IBM SPSS V23 using Independent samples T-test. The significance level was set at p<0.05. Results: No statistically significant difference was found between the bulk-fill composites (SF and CO) without R (p=0.167). Similarly, no significant difference was detected between the Ribbond fiber applied groups (SF+R and CO+R) (p=0.994). The effect of fiber application on FS of SF (p=0.421) and CO (p=0.552) was not statistically significant. The mean maximum force values (newtons) in decreasing order were CO (761.09±224.32) > SF+R (671.08±150.51) > CO+R (669.95±358.44) > SF (580.7±269.04). The EM values of SF and CO were statistically significantly different (p=0.009). A statistically significant difference was observed between the EM values in the Ribbond fiber applied groups (SF+R and CO+R) (p=0.026). EM values of CO were statistically significantly higher regardless of Ribbond application (p<0.001). Conclusion: Within the limitations of this in vitro study, the application of SonicFill3 and Charisma Bulk Flow ONE composites with Ribbond may be an option for clinical applications. Keywords: bulk-fill composite, elastic modulus, fracture resistance, polyethylene fiberPublication Metadata only Termoviskoz bulkFill kompozit rezin ile antagonist CAD CAM bloğunun aşınma direncinin incelenmesi(2022-04-23) ŞENOL, AYŞE ASLI; KAHRAMANOĞLU, ERKUT; YILMAZ ATALI, PINAR; TÜRKMEN, CAFER; Altuntaş E., Öztürk S., Şenol A. A., Kahramanoğlu E., Yılmaz Atalı P., Türkmen C.Molar incisor hypomineralization (MIH) is an enamel defect that develops in the molar and incisors as a result of exposure of ameloblast cells to various environmental and systemic factors during the maturation phase of amelogenesis, thus causing aesthetic concerns. In this case report microabrasion and home bleaching was planned for the treatment of MIH.A 17 years old female patient who referred to our clinic with the chief complaint of white lesions on maxillary incisor teeth, were examined clinical and radiographically In both the maxillary and mandibular arch, visible opacities were detected and microabrasion and home bleaching techniques were planned for the treatment of lesions. Before microabrasion application, Tooth Mousse Gel (GC) was applied on the lesions for two weeks. Shade selection was performed by spectraphotometer (Vita EasyShade V). Under the rubber dam isolation (maxillary-arch) and gingival barrier (mandibullary-arch) Opalustre (Ultradent) was applied in 3 consecutive cycles using OpalCups (Ultradent) according to manufacturer’s guidelines. Fluoride varnish (4% NAF, ProShield, President Dental) was applied for 4 minutes following the microabrasion. Home bleaching gel was applied for 5 weeks with custom made bleaching tray using 16% Carbamide Peroxide (Opalescence PF, Ultradent) Patient were recalled for 7,14,21,28 and 35 day. For the examination of the lesions and color of teeth.The using of ACP-CPP containing gel before the treatment, made a difference in the visibility of enamel hypomineralizations. The shades of incisor teeth which, was the patient’s complaint was B3 initially A2 after microbrasion and A1 after bleaching. The patient was satisfied with the treatment results.Application of remineralisation gel for two weeks, reduced the size of enamel hypomineralizations.The combined use of microabrasion and home bleaching is more effective in reducing lesions, eliminating aesthetic concerns and provided a more comfortable treatment process for the patient with MIH.Publication Metadata only Deneysel akışkan rezin kompozitin bükülme dayanımı ve elastik modülünün karşılaştırılması(2022-12-17) DOĞU KAYA, BENGÜ; ŞENOL, AYŞE ASLI; TARÇIN, BİLGE; YILMAZ ATALI, PINAR; Öztürk S., DOĞU KAYA B., KUZU N. Z., ŞENOL A. A., YILMAZ ATALI P., TARÇIN B.