Nanomechanical Properties of Different Dental Restorative Materials

Abstract

Nanomechanical Properties of Different Dental Restorative Materials H. Altana,∗, F. Bilgic, Z. Arslanoglu, E. Kale, A. Koroglu Kale, A. Altan and O. Sahin Gaziosmanpasa University, Faculty of Dentistry, Department of Pediatric Dentistry, Tokat, Turkey Mustafa Kemal University, Faculty of Dentistry, Department of Orthodontics, Hatay, Turkey Mustafa Kemal University, Faculty of Dentistry, Department of Paediatric Dentistry, Hatay, Turkey Mustafa Kemal University, Faculty of Dentistry, Department of Prosthodontics, Hatay, Turkey Gaziosmanpasa University, Faculty of Dentistry, Department of Maxillofacial Surgery, Tokat, Turkey Mustafa Kemal University, Faculty of Art and Science, Micro/Nanomechanic Characterization Laboratory, Hatay, Turkey The aim of this study is to determine the hardness and roughness of glass ionomer cement, glass carbomer, and compomer by nanoindentation. Three different dental restorative materials: glass ionomer cement, glass carbomer cement, and compomer were used. Disc specimens (10 mm× 1 mm) were prepared from each material using teflon mold. All specimens were light cured according to the manufacturer’s instructions. The specimens were then mounted in polyacrilic resin. After grinding and polishing the specimens were stored in distilled water at 37 ◦C for 1 day. The specimens were investigated using nanoindenter. The highest nanohardness was measured for glass ionomer cement and the lowest for glass carbomer. Regarding roughness, glass ionomer cement and compomer showed the highest mean values. Glass ionomer cement and compomer exhibited similar nanomechanical properties. Glass carbomer had superior ability to be polished up.