Pulp cell response to the application of silver diamine fluoride and potassium iodide on caries-like demineralized dentin.

Autor: Fernandes LO; Department of Restorative Dentistry, School of Dentistry, São Paulo State University (UNESP), Araraquara, Brazil., Mendes Soares IP; Department of Dental Materials and Prosthodontics, School of Dentistry, São Paulo State University (UNESP), Araraquara, Brazil., Anselmi C; Department of Morphology and Pediatric Dentistry, School of Dentistry, São Paulo State University (UNESP), Rua Humaitá, 1680, Araraquara, 14801-903, Brazil., Pires MLBA; Department of Morphology and Pediatric Dentistry, School of Dentistry, São Paulo State University (UNESP), Rua Humaitá, 1680, Araraquara, 14801-903, Brazil., Ribeiro RAO; Department of Dental Materials and Prosthodontics, School of Dentistry, São Paulo State University (UNESP), Araraquara, Brazil., Peruchi V; Department of Dental Materials and Prosthodontics, School of Dentistry, São Paulo State University (UNESP), Araraquara, Brazil., de Souza Costa CA; Department of Physiology and Pathology, School of Dentistry, São Paulo State University (UNESP), Araraquara, Brazil., Hebling J; Department of Morphology and Pediatric Dentistry, School of Dentistry, São Paulo State University (UNESP), Rua Humaitá, 1680, Araraquara, 14801-903, Brazil. josimeri.hebling@unesp.br.
Jazyk: angličtina
Zdroj: Clinical oral investigations [Clin Oral Investig] 2023 Dec; Vol. 27 (12), pp. 7295-7306. Date of Electronic Publication: 2023 Oct 18.
DOI: 10.1007/s00784-023-05320-8
Abstrakt: Objectives: To investigate the response of pulp cells to the application of silver diamine fluoride (SDF) and potassium iodide (KI) on demineralized dentin.
Materials and Methods: The occlusal surfaces of human dentin discs (0.4 mm thick) with similar permeability were subjected to an artificial caries protocol, and then the discs were adapted into artificial pulp chambers. MDPC-23 cells were seeded on the healthy pulp dentin surface, while the demineralized surface was treated with SDF, KI, SDF + KI, or hydrogen peroxide (positive control-PC) (n = 8). The negative control (NC) received ultrapure water. After 24 h, cell viability (alamarBlue) and morphology (SEM) were evaluated. The extracts were then applied to new MDPC-23 cells seeded in culture plates to assess their viability and the formation of mineralized nodules (MN; Alizarin Red) after seven days. The data were analyzed using one-way analysis of variance/Tukey or Games-Howell tests (α = 5%).
Results: SDF and PC significantly reduced the viability of cells seeded on discs (45.6% and 71.0%, respectively). Only cells treated with SDF or PC detached from the dentin substrate, while the remaining cells showed altered morphology. Cells in contact with extracts showed less reduction in viability, but it was still more toxic compared to NC. Only PC reduced MN deposition. SDF + KI or KI alone did not affect the cell response.
Conclusions: SDF applied alone showed a mild to moderate transdentinal cytotoxic effect on pulp cells. However, the combination of SDF + KI reduced the cytotoxic effects. Both materials used alone or in combination did not affect the mineralization ability of pulp cells.
Clinical Relevance: Besides improving esthetic results, associating potassium iodide with silver diamine fluoride may reduce the transdentinal cytotoxic effects of this cariostatic agent on pulp cells.
(© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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