The evidence suggests that RM-GIC is associated with a higher reduction of demineralization in adjacent hard tooth tissue than composite resin without fluoride .
No difference was found when RM-GIC was compared with fluoride-containing composite resin .
RM-GIC showed efficacy in reducing demineralization .
UNLABELLED The purpose of this systematic review was to quantitatively find out whether resin-modified glass-ionomers ( RM-GIC ) , in comparison to fluoride-containing composite resin and composite resin without fluoride , are associated with a more effective reduction of demineralization in hard tooth tissues under caries challenge .
An Intraoral Study of Caries Induced on Enamel in Contact with Fluoride– Releasing Restorative Materials
The aim was to study the effect of three fluoride – releasing restorative material s  on sound enamel of approximal teeth under cariogenic conditions intraorally . Bovine enamel slabs were paired with four hemispherical sample s from each of three test material s ( Ketac Molar , ESPE ; Vitremer , F–2000 , both from 3 M ) and one control material ( Pertac II , ESPE ) . Their curved surface touched enamel at a contact point allowing space for plaque accumulation . Pairs were inserted in the buccal flanges of 2 lower dentures for 70 days . Initially and upon dismantling , enamel surface microhardness was measured and the increase in length of indentation in micrometers was recorded at a distance of 0 , 0.4 , 0.8 and 1.2 mm from the contact point . Respective values were : Pertac II : 16.0±7.5 , 27.6±15.4 , 38.6±23.3 , 47.8±25.2 ; F–2000 : 11.89±9.6 , 15.8±14.2 , 21.0±15.0 , 25.1±15.2 ; Ketac Molar : 6.6±6.8 , 9.4±7.0 , 9.5±8.0 ) , 13.4±9.4 ; Vitremer : 2.7±4.1 , 3.5±3.5 , 3.6±4.5 ) , 7.4±5.2 . Caries protection was Vitremer 82 % > Ketac Molar 69 % > F–2000 42 % in relation to Pertac II ( p<0.001 ) . Sections of the slabs examined with polarized light showed typical subsurface lesions only in the Pertac II group , areas of pseudoisotropy in the F–2000 and Ketac Molar groups and no signs of lesion in the Vitremer group
The evidence suggests that RM-GIC is associated with a higher reduction of demineralization in adjacent hard tooth tissue than composite resin without fluoride .
No difference was found when RM-GIC was compared with fluoride-containing composite resin .
RM-GIC showed efficacy in reducing demineralization .
UNLABELLED The purpose of this systematic review was to quantitatively find out whether resin-modified glass-ionomers ( RM-GIC ) , in comparison to fluoride-containing composite resin and composite resin without fluoride , are associated with a more effective reduction of demineralization in hard tooth tissues under caries challenge .