IADR Abstract Archives
The Effectiveness of Iontophoresis in Enhancing Remineralisation of Carious Lesions
Objectives: This research compares the conventional remineralisation methods with iontophoresis technology, using microhardness measurement (Vickers hardness test), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX).
Methods: Root dentine surfaces on recently extracted human teeth were subjected to a sodium acetate buffer at pH4 to produce standard demineralised lesions. Specimens were embedded and sectioned perpendicular to the tooth longitudinal axis in the middle of the lesion. One half of the tooth was used in the microhardness test, and the second half with a lesion was used for scanning electron microscope (SEM) imaging and ED X-ray analysis. It was found that artificial caries were created in the root dentine. Remineralisation methods were applied to five demineralised teeth in each group of the remineralisation regime. The remineralisation regimes were calcium chloride (CaCl2) and phosphate biphosphate (K2HPO4) without and with polyacrylic acid; GC Tooth Mousse (CPP-ACP); and GC Tooth Mousse Plus (CPP-ACP with fluoride) as conventional remineralisation and using iontophoresis technology (EAER).
Results: These results show that all the remineralisation regimes used in this research partially worked. As has been found in this research, the demineralisation depth was up to 500 μm; we provided treatment and remineralised the root dentine caries. It can be seen that based on the VHN value, the efficiency of mechanical recovery between the regimes can be set in order from highest to lowest as follows: GC+, GC and supersaturated CaP with PAA, and the supersaturated CaP. Taking all of these together, in addition to the SEM analysis, which was quantified by adding the line profile to the images, after considering the high error bar, it can be suggested that all the groups show similar results.
Conclusions: The findings of the analysis of this study demonstrate remineralisation achievements among all the different groups. However, these data also suggest that there are no significant differences between using the conventional remineralisation methods and using iontophoresis technology for remineralising root dentine.
Methods: Root dentine surfaces on recently extracted human teeth were subjected to a sodium acetate buffer at pH4 to produce standard demineralised lesions. Specimens were embedded and sectioned perpendicular to the tooth longitudinal axis in the middle of the lesion. One half of the tooth was used in the microhardness test, and the second half with a lesion was used for scanning electron microscope (SEM) imaging and ED X-ray analysis. It was found that artificial caries were created in the root dentine. Remineralisation methods were applied to five demineralised teeth in each group of the remineralisation regime. The remineralisation regimes were calcium chloride (CaCl2) and phosphate biphosphate (K2HPO4) without and with polyacrylic acid; GC Tooth Mousse (CPP-ACP); and GC Tooth Mousse Plus (CPP-ACP with fluoride) as conventional remineralisation and using iontophoresis technology (EAER).
Results: These results show that all the remineralisation regimes used in this research partially worked. As has been found in this research, the demineralisation depth was up to 500 μm; we provided treatment and remineralised the root dentine caries. It can be seen that based on the VHN value, the efficiency of mechanical recovery between the regimes can be set in order from highest to lowest as follows: GC+, GC and supersaturated CaP with PAA, and the supersaturated CaP. Taking all of these together, in addition to the SEM analysis, which was quantified by adding the line profile to the images, after considering the high error bar, it can be suggested that all the groups show similar results.
Conclusions: The findings of the analysis of this study demonstrate remineralisation achievements among all the different groups. However, these data also suggest that there are no significant differences between using the conventional remineralisation methods and using iontophoresis technology for remineralising root dentine.
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