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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 viscous (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 (micron2) to area (mm2) of specimen surface (TA) and the ratio of total volume of porosities (micron2) to area (mm2) of material surface (VP).

Results: Median test was used. NP: NXV, NXF and DYR had smaller NP than VTM and FII and (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).

Titel:	Porosity of resin cements and resin-modified glass-ionomers.
Autor/in / Beteiligte Person:	Miguel, A ; de la Macorra JC ; Nevado, S ; Gómez, J
Zeitschrift:	American journal of dentistry, Jg. 14 (2001-02-01), Heft 1, S. 17
Veröffentlichung:	[San Antonio, TX : Mosher & Linder, Inc., c1988-, 2001
Medientyp:	academicJournal
ISSN:	0894-8275 (print)
Schlagwort:	Chi-Square Distribution Compomers chemistry Composite Resins chemistry Humans Materials Testing Methacrylates chemistry Microscopy Porosity Resins, Synthetic chemistry Silicates chemistry Statistics as Topic Statistics, Nonparametric Surface Properties Glass Ionomer Cements chemistry Resin Cements chemistry
Sonstiges:	Nachgewiesen in: MEDLINE Sprachen: English Publication Type: Comparative Study; Journal Article Language: English [Am J Dent] 2001 Feb; Vol. 14 (1), pp. 17-21. MeSH Terms: Glass Ionomer Cements / chemistry ; Resin Cements / chemistry ; Chi-Square Distribution ; Compomers / chemistry ; Composite Resins / chemistry ; Humans ; Materials Testing ; Methacrylates / chemistry ; Microscopy ; Porosity ; Resins, Synthetic / chemistry ; Silicates / chemistry ; Statistics as Topic ; Statistics, Nonparametric ; Surface Properties Substance Nomenclature: 0 (Compoglass) ; 0 (Compomers) ; 0 (Composite Resins) ; 0 (Dyract) ; 0 (Fuji II LC cement) ; 0 (Glass Ionomer Cements) ; 0 (Methacrylates) ; 0 (Nexus) ; 0 (Resin Cements) ; 0 (Resins, Synthetic) ; 0 (Silicates) ; 0 (Vitremer) Entry Date(s): Date Created: 20020125 Date Completed: 20020412 Latest Revision: 20071115 Update Code: 20240513

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Porosity of resin cements and resin-modified glass-ionomers.