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

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

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

A literature review of the application of cooperative learning (jigsaw) method in dental education

Özcan KARATAŞ | Cem Abdülkadir GÜRGAN

Bildiri

Bildiri 2021 Ankara Üniversitesi1. Uluslararası Diş Hekimliği Eğitimi Kongresi (DECON 21) , pp. 3 - 37 9 Görüntülenme

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