Effects of Acidic Challenge on Demineralized Root Surface Treated with Silver Diamine Fluoride and Potassium Iodide.

Autor: Iovan A; Faculty of Dental Medicine, 'Grigore T. Popa' University of Medicine and Pharmacy, 16 Universitatii Str., 700115 Iași, Romania., Benchea M; Faculty of Mechanical Engineering, 'Gh. Asachi' Technical University, 67 Dimitrie Mangeron Str., 700050 Iași, Romania., Stoleriu S; Faculty of Dental Medicine, 'Grigore T. Popa' University of Medicine and Pharmacy, 16 Universitatii Str., 700115 Iași, Romania., Tărăboanță I; Faculty of Dental Medicine, 'Grigore T. Popa' University of Medicine and Pharmacy, 16 Universitatii Str., 700115 Iași, Romania., Cimpoeșu N; Faculty of Materials Science and Engineering, 'Gh. Asachi' Technical University, 67 Dimitrie Mangeron Str., 700050 Iași, Romania., Nica I; Faculty of Dental Medicine, 'Grigore T. Popa' University of Medicine and Pharmacy, 16 Universitatii Str., 700115 Iași, Romania., Andrian S; Faculty of Dental Medicine, 'Grigore T. Popa' University of Medicine and Pharmacy, 16 Universitatii Str., 700115 Iași, Romania.
Jazyk: angličtina
Zdroj: Diagnostics (Basel, Switzerland) [Diagnostics (Basel)] 2023 Feb 01; Vol. 13 (3). Date of Electronic Publication: 2023 Feb 01.
DOI: 10.3390/diagnostics13030530
Abstrakt: Background: The aim of the study was to assess the protective effect of applying potassium iodide (KI) over silver diamine fluoride (SDF) on demineralized root dentin in the case of a sustained acidogenic attack.
Methods: Forty caries-free third molars were used in the study. A diamond disc was used to separate the roots and the tooth crowns from the roots. Each root fragment was randomly distributed in one of the four study groups: C-samples were not demineralized; DD-demineralized samples; RS1-demineralized samples covered with SDF+KI (RS-Riva Star product, SDI limited, Bayswater, Australia); RS2-demineralized samples covered with SDF+KI and submersed to another acidic challenge for 3 days. SEM and EDX were used for the morphological and elemental analysis. Vickers hardness assessment was performed using a tribometer CETR UMT-2 (Bruker Corporation, Berlin, Germany). One-way ANOVA and post hoc Bonferroni tests were used for the statistical analysis with a significance level of p < 0.05.
Results: Morphological and elemental changes were observed on the surface of the study samples. Significant differences were observed between the recorded hardness values of groups C and DD ( p = 0.005), C and RS2 ( p = 0.002), DD and RS1 ( p = 0.011); RS1 and RS2 ( p = 0.004).
Conclusions: The application of SDF and KI (Riva Star product) on root dentin caries resulted in the formation of a heterogeneous outer layer that sealed the dentin and increased the microhardness of the treated surface. In the conditions of the present study, this layer did not provide enough protection for root dentin exposed to continuous attacks.
Databáze: MEDLINE
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