2026-06-26T16:40:42Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/603762024-10-28T16:18:28Zcom_20.500.14352_14col_20.500.14352_15

Miguel Calvo, Alicia Macorra García, José Carlos De La Nevado Rodríguez, Silvia Gómez López, Javier 2023-06-20T20:30:27Z 2023-06-20T20:30:27Z 2001-02 0894-8275 https://hdl.handle.net/20.500.14352/60376 Purpose: to quantify the internal free surface in various resin cements and glass-ionomer-based materials. Materials and methods: materials tested were Nexus fluid (NXF) and vicous (NXV), Vitremer (VTM), Fuji II LC (FII), Vitremer Luting Cement (VLC), Dyract (DYR) and Compoglass (COM). Samples (n=5) were made of each material between two microscopic glass slides under same weight. With a transmitted light microscopy, four zones of each sample were evaluated, finding the number of porosities per mm² (NP), the average radius of porosities (RP), the ratio of total area of surface porosities (µ²) to area (mm²) of specimen surface (TA) and the ratio of total volume of porosities (µ²) to area (mm²) of material surface (VP). Results: median test was used. NP: NXV, NXF and DYR had smaller than VTM and FII ans (likely) than VLC (P<0.0000001) RP was smaller for DYR than for VLC and (likely) than for NXV (P=0.00019). TA: NXV, NXF and DYR had smaller TA than VTM, FII and VLC (P<0.0000001). VP: NXV and DYR had smaller VP than FII and (likely) than VTM and VLC (P<0.0000001). spa open access Porosity of resin cements and resin-modified glass-ionomers journal article