Resumen
Objectives: to evaluate the quality and stability of adhesive interfaces established by self-etching adhesives on caries-affected primary dentin (CAD) treated with glutaraldehyde (GA) or silver diamine fluoride (SDF). Methods: 42 primary molars were exposed to a microbiological caries-inducing protocol and divided into 6 groups according to the adhesive system (Clearfil SE - CL or FL Bond II - FL) and pretreatment (water, GA or SDF) applied on CAD. One tooth from each group was analyzed for surface modification using infrared spectroscopy. Crowns were restored with resin composite (n = 36) and cut into beams and slices. The beams were subjected to microtensile testing, Raman spectroscopy and SEM after 24 h and 6 months of storage. The slices were analyzed using Micro-Raman spectroscopy to determine the diffusion zone thickness (DZ) in each period. Data were analyzed by ANOVA and Tukey or Kruskal-Wallis and Dunn tests (α = 0.05%). Results: SDF reduced the immediate bond strength for both adhesives. The control groups showed a decrease in BS after 6 months in artificial saliva. GA increased immediate DZ for FL, while SDF had the opposite effect on CL. GA decreased the DZ for FL at 6 months. There was a predominance of adhesive failures with areas of cohesive dentin fractures within control groups. Significance: Modifications caused by dentin surface treatments may directly affect the performance of adhesive systems and the quality and stability of adhesive restorations.
| Idioma original | English |
|---|---|
| Número de artículo | 106293 |
| Publicación | Journal of the Mechanical Behavior of Biomedical Materials |
| Volumen | 150 |
| DOI | |
| Estado | Published - feb 2024 |
Nota bibliográfica
Publisher Copyright:© 2023 Elsevier Ltd
Financiación
This study was supported in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil (CAPES) - Finance Code 88887.487923/2020-00. Department of Dentistry of the State University of Maringá Complexo de Centrais de Apoio à Pesquisa (COMCAP) – UEM (Brasil), Physics Laboratory of the State University of Maringá, Chemistry Laboratory of the State University of Maringá and Pharmacology Laboratory of the State University of Maringá. This study was supported in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil (CAPES) - Finance Code 88887.487923/2020-00 . Department of Dentistry of the State University of Maringá Complexo de Centrais de Apoio à Pesquisa (COMCAP) – UEM (Brasil), Physics Laboratory of the State University of Maringá, Chemistry Laboratory of the State University of Maringá and Pharmacology Laboratory of the State University of Maringá.
| Financiadores | Número del financiador |
|---|---|
| COMCAP | |
| Department of Dentistry of the State University of Maringá Complexo de Centrais de Apoio à Pesquisa | |
| Lyman Laboratory of Physics | |
| Coordenação de Aperfeiçoamento de Pessoal de Nível Superior | 88887.487923/2020-00 |
| Coordenação de Aperfeiçoamento de Pessoal de Nível Superior |
ASJC Scopus subject areas
- Biomaterials
- Biomedical Engineering
- Mechanics of Materials