Purpose:Since conventional composite resins have some disadvantages such as polymerization shrinkage and secondarycaries formation, indirect restorations are preferred in cases where tooth tissue loss is high. The aim of this study toexamine the water absorption color change different beverages.Materials & Methods:In study, 40 specimens (10×2 mm) were arranged from each using three indirect...

OBJECTIVE The effects of closely adapting a prefabricated fiber to the post space remain unknown. The purpose of this study was to quantify the microleakages of a custom adapted fiber-reinforced post, a prefabricated quartz fiber post and a cast post using nondestructive methods. MATERIALS AND METHODS Sixty-five extracted human premolars were endodontically treated and randomly divided into t...

The purpose of this study was to evaluate the influence of prophylactic polishing pastes (PPP; Detartrine (DT), Topex (TP)) on surface roughness (R(a)) of indirect composites (IRC; Tescera (TES), Gradia (GRD), and Estenia C&B (EST)), a glass ceramic (Empress 2 layering (E2)), and a leucite reinforced glass ceramic (Empress Esthetic (EE)) with two different (glazed (G); polished (P)) surface pre...

AIM To analyze the influence of cavity design preparation on stress values in three-dimensional (3D) solid model of maxillary premolar restored with resin composite. METHODS 3D solid model of maxillary second premolar was designed using computed-tomography (CT) data. Based on a factorial experiment, 9 different mesio-occlusal-distal (MOD) cavity designs were simulated, with three cavity wall ...

STATEMENT OF PROBLEM Accumulation of plaque and staining due to a rough surface, and penetration of colourant agents from food and beverages in to the resin composite results in an incomplete polymerization. There is a little information on the effect of finishing and polishing techniques on the discoloration of nanohybrid and microhybrid composites when exposed to staining solutions. OBJECTI...

OBJECTIVE The aim of this study was to evaluate the clinical performance of a glass ionomer restorative system compared with a microfilled hybrid posterior composite in a four-year randomized clinical trial. METHODS A total of 140 (80 Class 1 and 60 Class 2) lesions in 59 patients were either restored with a glass ionomer restorative system (Equia, GC, Tokyo, Japan), which was a combination o...

Amaç: Çalışmanın amacı; farklı protez temizleme ajanlarının, total protezlerin diş eti modifikasyonunda kullanılan indirekt kompozit rezinler ve ısı ile polimerize olan akrilik kaide materyalinin yüzey pürüzlülüğüne etkisini değerlendirmektir. Gereç Yöntemler: Çalışmada iki kompoziti (Gradia Plus Gum SR Nexco Paste Gingiva) bir adet polimetil metakrilat rezin (PMMA) (Meliodent) test edildi. Her...

Amaç: Bu çalışmanın amacı, 5 farklı restoratif materyalin ağız ortamını taklit eden sıvılarda bekletil¬mesinin yüzey pürüzlülüğü (SR) üzerine etkilerini değerlendirmektir. Gereç ve Yöntemler: Çalışmada kullanılan materyaller Admira Fusion X-tra (AFX), Ceram X One (CRX), Gradia İndirekt (GRA), Filtek P60 (P60) Lava Ultimate’tir (LAV). Her materyalden 30 adet örnek hazırlandı örnekler 24 saat dis...

BACKGROUND Although composite restorations are really valuable for esthetic zones, they have shown less longevity rather than amalgam restorations. Since it may be related to the method used for curing the composite, postcuring could increase the degree of conversion and result in more long-lasting composite restorations. This study was planned to evaluate the effect of two different postcuring...