Category: Dental Materials

The effect of cleaning procedures on the bond strength of ceramic surfaces contaminated with saliva and try-in paste

Purpose of the study: To evaluate the effectiveness of different cleaning procedures on removing the saliva and try-in paste remnants from contaminated zirconia and lithium disilicate surfaces. Material and Methods: Fifty samples of zirconia (IPS e.max ZirCAD) and 50 samples of lithium disilicate (IPS e.max CAD) were divided into 5 groups: Group 1 – No […]

Effects of exposure time and exposure distance on the micro-mechanical properties of light cured pit and fissure sealants

Introduction: The study aimed to perform comparative measurements on the effect of exposure time and exposure distance on the micro-mechanical properties Vickers hardness (HV) and indentation modulus (E) of light cured, resin-based pit and fissure sealants. Material and Methods: Thirteen pit and fissure sealants were selected. Combinations of three clinically relevant exposure times (10, 20, […]

Influence of chewing load on wear rate of polymethyl methacrylate double cross-linked denture teeth in vitro

Selection of the facet and isolating the non-worn surfaces

Purpose of the Study: Compare occlusal wear of PMMA DCL denture teeth under two different loads in vitro. Materials & Methods: Sixteen mandibular second premolars (SR Orthoplane DCL) with a flat occlusal surface (specimens) were worn by sixteen maxillary second premolar-antagonists (Ortholingual DCL). These teeth were subjected in a chewing simulator (CS-4, SD Mechatronik) up to 240,000 […]