PMID- 11806473
OWN - NLM
STAT- MEDLINE
DCOM- 20020412
LR  - 20071115
IS  - 0894-8275 (Print)
IS  - 0894-8275 (Linking)
VI  - 14
IP  - 1
DP  - 2001 Feb
TI  - Porosity of resin cements and resin-modified glass-ionomers.
PG  - 17-21
AB  - 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).
FAU - Miguel, A
AU  - Miguel A
AD  - Department of Operative Dentistry, Faculty of Odontology, Complutense University, 
      Madrid, Spain.
FAU - de la Macorra, J C
AU  - de la Macorra JC
FAU - Nevado, S
AU  - Nevado S
FAU - Gomez, J
AU  - Gomez J
LA  - eng
PT  - Comparative Study
PT  - Journal Article
PL  - United States
TA  - Am J Dent
JT  - American journal of dentistry
JID - 8806701
RN  - 0 (Compoglass)
RN  - 0 (Compomers)
RN  - 0 (Composite Resins)
RN  - 0 (Dyract)
RN  - 0 (Fuji II LC cement)
RN  - 0 (Glass Ionomer Cements)
RN  - 0 (Methacrylates)
RN  - 0 (Nexus)
RN  - 0 (Resin Cements)
RN  - 0 (Resins, Synthetic)
RN  - 0 (Silicates)
RN  - 0 (Vitremer)
MH  - Chi-Square Distribution
MH  - Compomers/chemistry
MH  - Composite Resins/chemistry
MH  - Glass Ionomer Cements/*chemistry
MH  - Humans
MH  - Materials Testing
MH  - Methacrylates/chemistry
MH  - Microscopy
MH  - Porosity
MH  - Resin Cements/*chemistry
MH  - Resins, Synthetic/chemistry
MH  - Silicates/chemistry
MH  - Statistics as Topic
MH  - Statistics, Nonparametric
MH  - Surface Properties
EDAT- 2002/01/25 10:00
MHDA- 2002/04/16 10:01
CRDT- 2002/01/25 10:00
PHST- 2002/01/25 10:00 [pubmed]
PHST- 2002/04/16 10:01 [medline]
PHST- 2002/01/25 10:00 [entrez]
PST - ppublish
SO  - Am J Dent. 2001 Feb;14(1):17-21.