Comment in:

Quintessence Int. 1995 Nov;26(11):753-4.

Moisture susceptibility of resin-modified glass-ionomer materials.

Department of Pediatric Dentistry, University of Southern California, School of Dentistry, Los Angeles, California, USA.

The purposes of this experiment were to determine if resin-modified glass-ionomer cements are less sensitive to moisture than are conventional glass-ionomer cements, to investigate the effects of barrier coatings, and to study the effects of different setting environments. Discoid specimens of a variety of resin-modified glass-ionomer materials and a conventional glass-ionomer cement control were stored in different environments and were protected with different barrier coatings. The diametral tensile strengths of the specimens were determined and analyzed with three-way analysis of variance. Resin-modified glass-ionomer cements are less sensitive to moisture than is the conventional glass-ionomer cement control. Drier environments produced stronger resin-modified glass-ionomer specimens. Use of a fissure sealant as a barrier coating increased overall specimen strength, and the individual materials differed in strength.

PMID: 7568759 [PubMed - indexed for MEDLINE]