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Bulunan: 14 Adet 0.002 sn
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Filtreler
Bulunan: 14 Adet 0.002 sn
Tür : Makale/Derleme ✕İlgili Araştırmacılar : Özcan KARATAŞ ✕
Koleksiyon [3]
İlgili Araştırmacılar [6]
Tam Metin [2]
Tür [1]
Yazar [5]
Konu Başlıkları [20]
Bilimsel Araştırma Etkinlikleri [1]
Açık Erişim Tarihi [1]
Tarih [4]
Dizin Platformu [4]
İsmi Geçen [4]
WOS Kategorileri [7]
Projeler [1]
Doç. Dr. Özcan KARATAŞDiş Hekimliği
Erişime Açık

Thermal conductivity of different composite resin materials in dıfferent polymerization times and modes

Özcan KARATAŞ

Thermal conductivity of different composite resin materials in dıfferent polymerization times and modes. Amaç: Bu çalışmada siloran-esaslı ve dimetakrilat-esaslı kompozitlerin farklı polimerizasyon sürelerinde ve modlarında termal iletkenlikleri değerlendirildi Gereç ve Yöntem: Sağlam insan üçüncü molar dişlerinden 40 dentin disk (8 mm çap, 1.5 mm kalınlık) hazırlandı. Filtek Silorane (3M ESPE Dental Ürünleri, Minnesota, ABD) ve Filtek Z550 (3M ESPE Dental Ürünleri, Minnesota, ABD) kompozit örnekleri, led ışık cihazı ile (Valo, Ultradent Products Inc., Utah, ABD) iki farklı modda ve farklı s ...Daha fazlası

Makale/Derleme 2019 Atatürk Üniversitesi Diş Hekimliği Fakültesi Dergisi 6 Görüntülenme
Erişime Açık

Monomer release from nanohybrid composite after bleaching

Özcan KARATAŞ

The evaluation of the effect of bleaching on monomer release from two composite resins was performed by bleaching two nanohybrid composite resins Filtek Z550 and Tetric N-Ceram using two bleaching products Whiteness HP Maxx and Vivastyle. In total, 20 samples were made from each composite resin from which four groups were fabricated (two for each bleaching product). The samples were stored in a 75% ethanol solution, and the solutions were renewed after 1, 7, and 28 days. The monomer release was analyzed using high performance liquid chromatography. The data were analyzed using repeated measure ...Daha fazlası

Makale/Derleme 2019 Journal of Oral Science 8 Görüntülenme
Erişime Açık

The effect of in-office bleaching applications on the color and translucency of composite resins

Özcan KARATAŞ

Aim: The study aimed to evaluate the relationship between the caries frequency, which was determined using different caries indexes Objective: The aim of this study was to investigate the effect of in-office bleaching agents on the color and translucency of different resin composites. Materials and Methods: Twenty-four disk-shaped specimens with 1 mm thickness and 8 mm diameter were fabricated from five different resin composites. The specimens were then divided into three subgroups, two office bleaching groups (40% Opalescence Boost, 38% Whitesmile Power Whitening) and one control group (n=8) ...Daha fazlası

Makale/Derleme 2020 Annals Medical Journal 9 Görüntülenme
Erişime Açık

Comparison of translucency and flexural strength of fiber-reinforced composite resin materials

Özcan KARATAŞ

Aim: The purpose of this study was to compare translucency values and flexural strength of composite resin materials reinforced with two different fibers.Materials and Methods: In this study, two direct composites (Clearfil Majesty Esthetic and Posterior) and an indirect composite (Tescera) used with a non-fiber control group and two fiber-reinforced (EverStick glass fiber and Ribbond polyethylene fiber) composite groups. Thirty specimens were obtained from the entire composites with dimensions of 25×2×2mm3. Translucency parameter values of the specimens were obtained using a spectrophotometer ...Daha fazlası

Makale/Derleme 2020 Annals Medical Journal 8 Görüntülenme
Erişime Açık

An evaluation of surface roughness after staining of different composite resins using atomic force microscopy and a profilometer

Özcan KARATAŞ

Aim: The aim of this study was to compare the surface roughness of different composite resins using atomic force microscope (AFM) and a profilometer after storage in different solutions. Materials and methods: Eight different composite resins were used in this study. Twenty specimens of each composite resin material were prepared using a 2-mm thick and 8-mm diameter stainless steel mold. After the composites had been placed in the mold, they were polymerized with a LED curing unit. The surfaces of all specimens were polished using aluminum oxide discs, and the specimens were then divided into ...Daha fazlası

Makale/Derleme 2020 Microscopy Research and Technique 6 Görüntülenme
Erişime Açık

Effect of fiber reinforcement on color stability of different composite resins

Özcan KARATAŞ

Aim: The aim of this in vitro study was to determine the effect of fiber reinforcement on the color changes of two different composite resins. Materials and Methods: A silorane-based composite (Filtek Silorane, A2 shade) and a methacrylate-based composite (Valux Plus, A2 shade) were used in this study. Three groups of samples (control group with no reinforcements, polyethylene fiber [Ribbond THM]-reinforced composite, and glass fiber [everStick® Net]-reinforced composite groups) were prepared from each composite (n = 8). The color change was calculated between baseline and 1 day (ΔE1) and betw ...Daha fazlası

Makale/Derleme 2020 Journal of Conservative Dentistry 7 Görüntülenme
Erişime Açık

The effect of different curing units on the degree of polymerization of different composite resins

Özcan KARATAŞ

Objective: The aim of this study was to investigate the degree of polymerization of composite resins cured with different light-curing units (LCUs). Materials and Methods: Three bulk-fill composite (Beautifil Bulk-Fill Giomer, Filtek Bulk-Fill, and X-Tra Fill) and a methacrylate-based composite (Filtek Z250) were used in this study. Thirty disc-shaped specimens, 4 mm thick, were prepared from each composite resin. Specimens were divided into three groups and polymerized with light-emitting diode (LED), Plasma arch curing unit (PAC), and quartz-tungsten halogen LCU. The bottom and top surface m ...Daha fazlası

Makale/Derleme 2021 J Oral Res Rev 6 Görüntülenme
Erişime Açık

A deep learning approach to dental restoration classification from bitewing and periapical radiographs

Özcan KARATAŞ | Nazire Nurdan ÇAKIR | Şaban Suat ÖZSARIYILDIZ | Cem Abdülkadir GÜRGAN

Objective: The aim of this study was to examine the success of deep learning-based convolutional neural networks (CNN) in the detection and differentiation of amalgam, composite resin, and metal-ceramic restorations from bitewing and periapical radiographs. Method and materials: Five hundred and fifty bitewing and periapical radiographs were used. Eighty percent of the images were used for training, and 20% were left for testing. Twenty percent of the images allocated for training were then used for validation during learning. The image classification model was based on the application of CNN. ...Daha fazlası

Makale/Derleme 2021 Quintessence International 12 Görüntülenme
Erişime Açık

Effect of Fiber Reinforcement on Color Stability and Degree of Polymerization of Different Composite Resins

Özcan KARATAŞ

Aim: The aim of this in vitro study was to determine the effect of fiber-reinforcement on the color changes and degree of polymerization of two different composite resins. Materials and Methods: A bulk-fill composite resin and a methacrylate-based composite resin with A2 shade were used in this study. Three groups of specimens (control group with no reinforcements, polyethylene fiber-reinforced composite and glass fiber-reinforced composite groups) were prepared from each composite. The color change of the specimens with polymerization was measured. Then, to determine the degree of polymerizat ...Daha fazlası

Makale/Derleme 2021 J Oral Res Rev 9 Görüntülenme
Erişime Açık

Probiyotik içerikli solüsyonların diş minesi ve farklı restoratif materyallerin yüzey pürüzlülüğü ve mikro-sertliğine etkisi.

Özcan KARATAŞ

Makale/Derleme

Makale/Derleme 2021 9 Görüntülenme
Erişime Açık

Ağız gargaraları ve antiseptiklerinin farklı kompozit rezinlerin renk stabilitesine etkisi

Turan Emre KUZU | Özcan KARATAŞ

Amaç: Çalışmanın amacı farklı ağız gargara ve antiseptiklerinin farklı kompozit rezinlerin renk stabilitesine etkisini incelemektir. Gereç ve yöntem: Çalışmada bir mikrohibrit (Filtek Z250, 3M ESPE, St. Paul, MN, ABD) ve bir nanohibrit kompozitten (Filtek Z550, 3M ESPE, St. Paul, MN, ABD) 50’şer adet disk şekilli örnek hazırlandı. Kompozit rezinler teflon kalıplara yerleştirilerek LED ışık cihazı (1000mW/cm2 , Valo LED, Ultradent Products, South Jordan, ABD) yardımıyla polimerize edildi. Polimerizasyonu tamamlanan örnekler 37oC de 24 saat süre ile distile suda bekletildi. Ardından her kompozit ...Daha fazlası

Makale/Derleme 2021 Atatürk Üniversitesi Diş Hekimliği Fakültesi Dergisi 9 Görüntülenme
Erişime Açık

The Effect Of Staining And Bleaching On The Microhardness, Surface Roughness And Color Of Different Composite Resins

Özcan KARATAŞ

Background: There are studies that examined the effect of staining on the surface properties of composite resins, using different solutions and bleaching applications. However, the effect of both staining and bleaching on the same composite specimens is an issue that needs to be investigated. Objectives: The aim of this study was to investigate the surface microhardness, roughness and color changes (ΔE) of 2 different composite resins after staining and bleaching. Material and methods: A microhybrid and a nanohybrid composite were used in the study. One hundred and fifty specimens were prepare ...Daha fazlası

Makale/Derleme 2021 Dental and Medical Problems 4 Görüntülenme
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