| [PMID]: | 28877280 |
| [Au] Autor: | Epasinghe DJ; Yiu CKY; Burrow MF |
| [Ad] Endereço: | Prince Philip Dental Hospital, University of Hong Kong, Faculty of Dentistry, Hong Kong SAR, China. |
| [Ti] Título: | Mechanical properties, water sorption characteristics, and compound release of grape seed extract-incorporated resins. |
| [So] Source: | J Appl Oral Sci;25(4):412-419, 2017 Jul-Aug. |
| [Is] ISSN: | 1678-7765 |
| [Cp] País de publicação: | Brazil |
| [La] Idioma: | eng |
| [Ab] Resumo: | Objective: This study evaluated the effect of grape seed extract (GSE) incorporation on the mechanical properties, water sorption, solubility, and GSE release from the experimental adhesive resins. Material and Methods: An experimental comonomer mixture, consisting of 40% Bis-GMA, 30% Bis MP, 28% HEMA, 0.26% camphorquinone and 1% EDMAB, was used to prepare four GSE-incorporated adhesive resins at concentrations of 0.5, 1, 1.5, and 2 wt%. The neat resin without GSE was used as the control. Six resin beams (25 mm x 2 mm x 2 mm) per group were prepared for flexural strength and modulus of elasticity evaluations using a universal testing machine at a crosshead speed of 1 mm/min. Five disks (6 mm in diameter and 2 mm in thickness) per group were used for microhardness measurements using a Leitz micro-hardness tester with Leica Qgo software. Five disks (7 mm in diameter and 2 mm in thickness) per group were prepared and stored in deionized water for 28 days. Water sorption, solubility, and GSE release in deionized water were calculated for each GSE-incorporated adhesive at the end of 28th day. Data was evaluated using one-way ANOVA and Tukey multiple comparisons. Results: Flexural strength, modulus of elasticity and microhardness of GSE-incorporated adhesive decreased significantly with incorporation of 1.5% of GSE (p<0.05). Addition of GSE had no effect on the water sorption of the adhesive resins (p=0.33). The solubility of the resin also increased significantly with incorporation of 1.5% of GSE (p<0.05). Quantities of GSE release increased with increased concentration of GSE in the adhesive resin. Conclusion: Up to 1% of GSE can be incorporated into a dental adhesive resin without interfering with the mechanical properties or solubility of the resins. |
| [Mh] Termos MeSH primário: |
Bis-Fenol A-Glicidil Metacrilato/química
Cânfora/análogos & derivados
Extrato de Sementes de Uva/química
Metacrilatos/química
Cimentos de Resina/química
para-Aminobenzoatos/química
|
| [Mh] Termos MeSH secundário: |
Análise de Variância
Cânfora/química
Módulo de Elasticidade
Testes de Dureza
Teste de Materiais
Maleabilidade
Proantocianidinas/química
Valores de Referência
Reprodutibilidade dos Testes
Solubilidade
Estatísticas não Paramétricas
Fatores de Tempo
Água/química
|
| [Pt] Tipo de publicação: | EVALUATION STUDIES; JOURNAL ARTICLE |
[Nm] Nome de substância:
| 0 (Grape Seed Extract); 0 (Methacrylates); 0 (Proanthocyanidins); 0 (Resin Cements); 0 (ethyl 4-N,N-dimethylaminobenzoate); 0 (para-Aminobenzoates); 059QF0KO0R (Water); 18206-61-6 (proanthocyanidin); 454I75YXY0 (Bisphenol A-Glycidyl Methacrylate); 6E1I4IV47V (hydroxyethyl methacrylate); 76-22-2 (Camphor); RAL3591W33 (camphorquinone) |
| [Em] Mês de entrada: | 1710 |
| [Cu] Atualização por classe: | 171006 |
[Lr] Data última revisão:
| 171006 |
| [Sb] Subgrupo de revista: | D; IM |
| [Da] Data de entrada para processamento: | 170907 |
| [St] Status: | MEDLINE |
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