In vitro study of the effects of fluoride-releasing dental materials on remineralization in an enamel erosion model
Abstract
Objectives
This
study was conducted to compare the remineralization effects of five
regimens on the loss of fluorescence intensity, surface microhardness,
roughness and microstructure of bovine enamel after remineralization. We
hope that these results can provide some basis for the clinical
application of these materials.
Methods
One
hundred bovine incisors were prepared and divided into the following
five groups, which were treated with distinct dental materials: (1)
Clinpro™ XT varnish(CV), (2) F-varnish(FV), (3) Tooth Mousse(TM), (4)
Fuji ? LC® light-cured glass ionomer pit and fissure sealant(FJ), and (5) Base Cement®
glass polyalkenoate cement(BC). Subsequently, they were detected using
four different methods: quantitative light-induced fluorescence,
microhardness, surface 3D topography and scanning electron microscopy.
Results
The
loss of fluorescence intensity of CV, BC and FJ groups showed
significant decreases after remineralization (p < 0.05). The
microhardness values of the BC group were significantly higher than
those of the other groups (p < 0.05) after 6 weeks of
remineralization. The CV group's surface roughness was significantly
lower than those of the other groups after 6 weeks of remineralization
(p < 0.05). Regarding microstructure values, the FV group showed many
round particles deposited in the bovine enamel after remineralization.
However, the other four groups mainly showed needle-like crystals.
Conclusions
GIC-based
dental materials can promote more remineralization of the artificial
enamel lesions than can NaF-based dental materials. Resin-modified GIC
materials (e.g., CV and FJ) have the potential for more controlled and
sustained release of remineralized agents. The effect of TM requires
further study.
Comments