The effect of plasma treatment and bioglass paste on enamel white spot lesions
Available online 21 October 2016
Abstract
Objective
Bioglass
can be used as a non-invasive remineralizing treatment for enamel white
spot lesions (WSLs). Cold plasma application can boost enamel surface
properties by increasing its surface energy and wettability without
disturbing the bulk structure or raising up pulp temperature. It is
thought that the remineralizing ability of bioglass, might be enhanced
if proceeded by plasma application. This study investigated the combined
effect of cold plasma and bioglass on demineralized enamel.
Methods
Forty
bovine incisors were sectioned to obtain flat enamel specimens and
challenged by demineralization solution of pH 4.47 for 72 h. The enamel
specimens were randomly divided into four groups: (I) control,
demineralized enamel with no treatment (C); (II) demineralized enamel
primarily treated with cold plasma, then bioglass paste protected with
adhesive, afterward additional application of cold plasma (PBP); (III)
demineralized enamel treated with cold plasma, then bioglass paste
protected with light cured adhesive (PB); and (IV) bioglass paste
applied to demineralized enamel and protected with light cured adhesive
(B). All groups were stored in remineralizing solution for 24 h,
subsequently cross-sectional micro-hardness measurements were done and
then a scanning electron microscope (SEM) coupled with energy dispersive
X-ray spectroscope (EDS) were used to examine specimen’s surface
morphology and chemical analysis.
Results
Group
II (PBP) showed a significant higher cross sectional micro-hardness
value than bioglass group at 30 μm depth. SEM revealed numerous surface
deposits of spheroidal and prismatic shape, EDS showed that the elements
are mainly calcium, phosphorus with trace amount of silica and sodium.
Conclusion
Combined plasma/bioglass/plasma treatment could improve the remineralization of enamel white spot lesions.
Comments