Bulk and surface properties related to composite filler size
There are few studies that fully characterize the effect of the filler size on the surface, optical and mechanical properties of resin composites. Aim: To determine the influence of the filler size content on surface, optical and mechanical properties before and after accelerated aging. Methods: Sev...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Universidade Estadual de Campinas
2015-10-01
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| Series: | Brazilian Journal of Oral Sciences |
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| Online Access: | https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8640970 |
| _version_ | 1831538922067329024 |
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| author | Kátia Gerhardt Andrea Soares Quirino da Silva Guilherme Rego Mário Alexandre Coelho Sinhoreti Vinicius Esteves Salgado Luis Felipe J. Schneider |
| author_facet | Kátia Gerhardt Andrea Soares Quirino da Silva Guilherme Rego Mário Alexandre Coelho Sinhoreti Vinicius Esteves Salgado Luis Felipe J. Schneider |
| author_sort | Kátia Gerhardt |
| collection | DOAJ |
| description | There are few studies that fully characterize the effect of the filler size on the surface, optical and mechanical properties of resin composites. Aim: To determine the influence of the filler size content on surface, optical and mechanical properties before and after accelerated aging. Methods: Seven resin composites were investigated: Filtek Supreme® (3M/ESPE), Estelite Σ Quick® (Tokuyama), Evolu-X® (Dentsply), Esthet-X HD® (Dentsply), Opallis® (FGM), Herculite XRV Ultra® (Kerr) and Filtek Z250® (3M/ESPE). Elastic modulus (EM) and flexural strength (FS) were determined by three-point bending of specimens immersed or not in absolute ethanol for seven days. Roughness (Ra) and gloss (G.U.) analyses were determined before and after ethanol storage for seven days and CIELAB color change (∆E*) was obtained with a spectrophotometer. Results were analyzed by two-way ANOVA (general linear model) for EM and FS, with repeated measures for roughness and gloss, and one-way ANOVA for ∆E*. All comparisons were performed by Tukey’s test (5%). Pearsons’ correlation test was performed to determine the correlation between EM, FS, roughness, gloss, and ∆E* with the mean filler sizes. Results: Mechanical properties decreased for all materials when submitted to immersion in ethanol. Increasing filler size gradually increased EM, FS and roughness values; gloss values decreased and didn’t significantly affects ∆E*. Nanofiller composites presented higher gloss values than the others. Conclusions: It was possible to determine that the average filler size is a good predictor just for FS and gloss retention. |
| first_indexed | 2024-12-16T23:32:02Z |
| format | Article |
| id | doaj.art-2a19791c001c4752b3d9f87d9866bb17 |
| institution | Directory Open Access Journal |
| issn | 1677-3225 |
| language | English |
| last_indexed | 2024-12-16T23:32:02Z |
| publishDate | 2015-10-01 |
| publisher | Universidade Estadual de Campinas |
| record_format | Article |
| series | Brazilian Journal of Oral Sciences |
| spelling | doaj.art-2a19791c001c4752b3d9f87d9866bb172022-12-21T22:11:50ZengUniversidade Estadual de CampinasBrazilian Journal of Oral Sciences1677-32252015-10-0112410.20396/bjos.v12i4.8640970Bulk and surface properties related to composite filler sizeKátia Gerhardt0Andrea Soares Quirino da Silva1Guilherme Rego2Mário Alexandre Coelho Sinhoreti3Vinicius Esteves Salgado4Luis Felipe J. Schneider5Veiga de Almeida UniversityVeiga de Almeida University; Rio de Janeiro Federal UniversityFederal Fluminense UniversityUNICAMPPelotas Federal UniversityVeiga de Almeida University; Federal Fluminense UniversityThere are few studies that fully characterize the effect of the filler size on the surface, optical and mechanical properties of resin composites. Aim: To determine the influence of the filler size content on surface, optical and mechanical properties before and after accelerated aging. Methods: Seven resin composites were investigated: Filtek Supreme® (3M/ESPE), Estelite Σ Quick® (Tokuyama), Evolu-X® (Dentsply), Esthet-X HD® (Dentsply), Opallis® (FGM), Herculite XRV Ultra® (Kerr) and Filtek Z250® (3M/ESPE). Elastic modulus (EM) and flexural strength (FS) were determined by three-point bending of specimens immersed or not in absolute ethanol for seven days. Roughness (Ra) and gloss (G.U.) analyses were determined before and after ethanol storage for seven days and CIELAB color change (∆E*) was obtained with a spectrophotometer. Results were analyzed by two-way ANOVA (general linear model) for EM and FS, with repeated measures for roughness and gloss, and one-way ANOVA for ∆E*. All comparisons were performed by Tukey’s test (5%). Pearsons’ correlation test was performed to determine the correlation between EM, FS, roughness, gloss, and ∆E* with the mean filler sizes. Results: Mechanical properties decreased for all materials when submitted to immersion in ethanol. Increasing filler size gradually increased EM, FS and roughness values; gloss values decreased and didn’t significantly affects ∆E*. Nanofiller composites presented higher gloss values than the others. Conclusions: It was possible to determine that the average filler size is a good predictor just for FS and gloss retention.https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8640970NanocompositesResin cementsSurface properties |
| spellingShingle | Kátia Gerhardt Andrea Soares Quirino da Silva Guilherme Rego Mário Alexandre Coelho Sinhoreti Vinicius Esteves Salgado Luis Felipe J. Schneider Bulk and surface properties related to composite filler size Brazilian Journal of Oral Sciences Nanocomposites Resin cements Surface properties |
| title | Bulk and surface properties related to composite filler size |
| title_full | Bulk and surface properties related to composite filler size |
| title_fullStr | Bulk and surface properties related to composite filler size |
| title_full_unstemmed | Bulk and surface properties related to composite filler size |
| title_short | Bulk and surface properties related to composite filler size |
| title_sort | bulk and surface properties related to composite filler size |
| topic | Nanocomposites Resin cements Surface properties |
| url | https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8640970 |
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