hrvatski

Chemical Composition of Enamel After Treatment With Three Different Bioactive Coatings

Aim: The aim of this study was to evaluate the influence of bioactive coatings, containing casein phosphopeptide-amorphous calcium phosphate, fluoride and nano-hydroxyapatite as an active ingredient respectively, on the chemical composition of enamel. Materials and methods: For this study three extracted human third molars were used in order to prepare three specimens (N=3) for each tested material. The teeth were embeded into self- polymerizing acrylic resin, forming rectangular blocks which were then polished exposing a smooth enamel surface. Specimen of 2 mm thickness were cut using diamond saw. One specimen in each group was left untreated. On the second specimen an artificial demineralized lesion on enamel was created by applying 37% phosphoric acid for three minutes, while the third one was after demineralization also treated with one of the bioactive coatings. The material was applied at every 24 hours, in total duration of 14 days. Between the material application, the samples were kept in saline. Scanning electron microscopy- energy dispersive X-ray spectroscopy (SEM-EDS) analysis was performed in three stages ; initial stage, after demineralization and after the period of remineralization. Results: SEM analysis showed uneven patterns and porosities on all samples tested. EDS results showed an increase in mineral content of the examined samples, with the highest one observed in the MI Varnish® group. Conclusion: All three materials tested lead to changes in the chemical composition of the enamel, mostly by increasing its mineral content, with the biggest differences observed in the MI Varnish® group.

enamel ; bioactive coating

nije evidentirano

engleski

Chemical Composition of Enamel After Treatment With Three Different Bioactive Coatings

Aim: The aim of this study was to evaluate the influence of bioactive coatings, containing casein phosphopeptide-amorphous calcium phosphate, fluoride and nano-hydroxyapatite as an active ingredient respectively, on the chemical composition of enamel. Materials and methods: For this study three extracted human third molars were used in order to prepare three specimens (N=3) for each tested material. The teeth were embeded into self- polymerizing acrylic resin, forming rectangular blocks which were then polished exposing a smooth enamel surface. Specimen of 2 mm thickness were cut using diamond saw. One specimen in each group was left untreated. On the second specimen an artificial demineralized lesion on enamel was created by applying 37% phosphoric acid for three minutes, while the third one was after demineralization also treated with one of the bioactive coatings. The material was applied at every 24 hours, in total duration of 14 days. Between the material application, the samples were kept in saline. Scanning electron microscopy- energy dispersive X-ray spectroscopy (SEM-EDS) analysis was performed in three stages ; initial stage, after demineralization and after the period of remineralization. Results: SEM analysis showed uneven patterns and porosities on all samples tested. EDS results showed an increase in mineral content of the examined samples, with the highest one observed in the MI Varnish® group. Conclusion: All three materials tested lead to changes in the chemical composition of the enamel, mostly by increasing its mineral content, with the biggest differences observed in the MI Varnish® group.

enamel ; bioactive coating

nije evidentirano