Influence of flavonoids on long-term bonding stability on caries-affected dentin
| Autor: | Cesar Augusto Galvão Arrais, Mario Felipe Gutiérrez, Andrés Dávila-Sánchez, Salvatore Sauro, Bruna Hilgemberg, Alessandro Dourado Loguercio, J. Bermudez, María Luján Méndez-Bauer |
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| Rok vydání: | 2019 |
| Předmět: |
Molar
Materials science Resin composite Dentistry Dental Cements 02 engineering and technology Composite Resins 03 medical and health sciences Rutin chemistry.chemical_compound 0302 clinical medicine stomatognathic system Tensile Strength Caries affected dentin Materials Testing Dentin medicine Humans General Materials Science General Dentistry Naringin Flavonoids Bond strength business.industry Dental Bonding 030206 dentistry 021001 nanoscience & nanotechnology Resin Cements medicine.anatomical_structure chemistry Mechanics of Materials Dentin-Bonding Agents Adhesive 0210 nano-technology business |
| Zdroj: | Dental materials : official publication of the Academy of Dental Materials. 36(9) |
| ISSN: | 1879-0097 |
| Popis: | Objectives To evaluate the effect of experimental dentin pre-treatment solutions formulated with different flavonoids on microtensile bond strength (μTBS), nanohardness (NH) and ultra-morphological characteristics of artificial caries-affected dentin (CAD) bonded using a universal bonding system. Methods A microbiological method was used to create an artificial CAD in 91 human molars. Five experimental pre-treatment solutions were created using the following flavonoids: quercetin (QUE); hesperidin (HES); rutin (RUT); naringin (NAR), or proanthocyanidin (PRO). A placebo solution (PLA) with no flavonoids added was also evaluated. The flavonoids or placebo solutions were applied to the CAD prior to the application and photoactivation of a universal adhesive (Scotchbond Universal, 3M Oral Care). A control group (CON), in which only the bonding agent was applied without any flavonoid solution, was also evaluated. A 3-mm-thick block of resin composite (Opallis, FGM) was built up on the flat bonded CAD surfaces and was light-cured following the manufacturer’s instructions. Specimens were sectioned to obtain resin-dentin slices and sticks (cross-sectional area of 0.8 mm2). The μTBS, NH, and confocal ultramorphology analysis of resin-dentin interface was evaluated at 24 h and after thermo-cycling aging (25,000 cycles). The results were analyzed using 2-way ANOVA followed by Bonferroni's post hoc test (pre-set α = 0.05). Results The specimens from groups QUE, NAR, and RUT presented greater μTBS values than those from CON group (p Significance The use of exogenous cross-linkers as dentin pre-treatment before bonding procedures may represent a suitable strategy to improve the longevity of universal adhesive systems applied to caries-affected dentin. |
| Databáze: | OpenAIRE |
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