Polymerization Shrinkage, Hygroscopic Expansion, Elastic Modulus and Degree of Conversion of Different Composites for Dental Application
Objectives: To characterize the mechanical properties of different resin-composites for dental application. Methods: Thirteen universal dentin shade composites (<i>n</i> = 10) from different manufacturers were evaluated (4 Seasons, Grandio, Venus, Amelogen Plus, P90, Z350, Esthet-X, Amar...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-12-01
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| Series: | Journal of Composites Science |
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| Online Access: | https://www.mdpi.com/2504-477X/5/12/322 |
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| author | Alexandre Luiz Souto Borges Amanda Maria de Oliveira Dal Piva Sabrina Elise Moecke Raquel Coutinho de Morais João Paulo Mendes Tribst |
| author_facet | Alexandre Luiz Souto Borges Amanda Maria de Oliveira Dal Piva Sabrina Elise Moecke Raquel Coutinho de Morais João Paulo Mendes Tribst |
| author_sort | Alexandre Luiz Souto Borges |
| collection | DOAJ |
| description | Objectives: To characterize the mechanical properties of different resin-composites for dental application. Methods: Thirteen universal dentin shade composites (<i>n</i> = 10) from different manufacturers were evaluated (4 Seasons, Grandio, Venus, Amelogen Plus, P90, Z350, Esthet-X, Amaris, Vita-l-escence, Natural-Look, Charisma, Z250 and Opallis). The polymerization shrinkage percentage was calculated using a video-image recording device (ACUVOL—Bisco Dental) and the hygroscopic expansion was measured after thermocycling aging in the same equipment. Equal volumes of material were used and, after 5 min of relaxation, baseline measurements were calculated with 18 J of energy delivered from the light-curing unit. Specimens were stored in a dry-dark environment for 24 h then thermocycled in distilled water (5–55 °C for 20,000 cycles) with volume measurement at each 5000 cycles. In addition, the pulse-excitatory method was applied to calculate the elastic modulus and Poisson ratio for each resin material and the degree of conversion was evaluated using Fourier transform infrared spectroscopy. Results: The ANOVA showed that all composite volumes were influenced by the number of cycles (α = 0.05). Volumes at 5 min post-polymerization (12.47 ± 0.08 cm<sup>3</sup>) were significantly lower than those at baseline (12.80 ± 0.09 cm<sup>3</sup>). With regard to the impact of aging, all resin materials showed a statistically significant increase in volume after 5000 cycles (13.04 ± 0.22 cm<sup>3</sup>). There was no statistical difference between volumes measured at the other cycle steps. The elastic modulus ranged from 22.15 to 10.06 GPa and the Poisson ratio from 0.54 to 0.22 with a significant difference between the evaluated materials (α = 0.05). The degree of conversion was higher than 60% for all evaluated resin composites. |
| first_indexed | 2024-03-10T03:49:48Z |
| format | Article |
| id | doaj.art-79c3f7d0e92e4625a5077c6a59f6b2c0 |
| institution | Directory Open Access Journal |
| issn | 2504-477X |
| language | English |
| last_indexed | 2024-03-10T03:49:48Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Composites Science |
| spelling | doaj.art-79c3f7d0e92e4625a5077c6a59f6b2c02023-11-23T08:59:25ZengMDPI AGJournal of Composites Science2504-477X2021-12-0151232210.3390/jcs5120322Polymerization Shrinkage, Hygroscopic Expansion, Elastic Modulus and Degree of Conversion of Different Composites for Dental ApplicationAlexandre Luiz Souto Borges0Amanda Maria de Oliveira Dal Piva1Sabrina Elise Moecke2Raquel Coutinho de Morais3João Paulo Mendes Tribst4Institute of Science and Technology, São Paulo State University (Unesp), São José dos Campos 12245-000, BrazilAcademic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, 1081 LA Amsterdam, The NetherlandsInstitute of Science and Technology, São Paulo State University (Unesp), São José dos Campos 12245-000, BrazilInstitute of Science and Technology, São Paulo State University (Unesp), São José dos Campos 12245-000, BrazilAcademic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, 1081 LA Amsterdam, The NetherlandsObjectives: To characterize the mechanical properties of different resin-composites for dental application. Methods: Thirteen universal dentin shade composites (<i>n</i> = 10) from different manufacturers were evaluated (4 Seasons, Grandio, Venus, Amelogen Plus, P90, Z350, Esthet-X, Amaris, Vita-l-escence, Natural-Look, Charisma, Z250 and Opallis). The polymerization shrinkage percentage was calculated using a video-image recording device (ACUVOL—Bisco Dental) and the hygroscopic expansion was measured after thermocycling aging in the same equipment. Equal volumes of material were used and, after 5 min of relaxation, baseline measurements were calculated with 18 J of energy delivered from the light-curing unit. Specimens were stored in a dry-dark environment for 24 h then thermocycled in distilled water (5–55 °C for 20,000 cycles) with volume measurement at each 5000 cycles. In addition, the pulse-excitatory method was applied to calculate the elastic modulus and Poisson ratio for each resin material and the degree of conversion was evaluated using Fourier transform infrared spectroscopy. Results: The ANOVA showed that all composite volumes were influenced by the number of cycles (α = 0.05). Volumes at 5 min post-polymerization (12.47 ± 0.08 cm<sup>3</sup>) were significantly lower than those at baseline (12.80 ± 0.09 cm<sup>3</sup>). With regard to the impact of aging, all resin materials showed a statistically significant increase in volume after 5000 cycles (13.04 ± 0.22 cm<sup>3</sup>). There was no statistical difference between volumes measured at the other cycle steps. The elastic modulus ranged from 22.15 to 10.06 GPa and the Poisson ratio from 0.54 to 0.22 with a significant difference between the evaluated materials (α = 0.05). The degree of conversion was higher than 60% for all evaluated resin composites.https://www.mdpi.com/2504-477X/5/12/322composite dental resindental materialspolymerizationvideo recording |
| spellingShingle | Alexandre Luiz Souto Borges Amanda Maria de Oliveira Dal Piva Sabrina Elise Moecke Raquel Coutinho de Morais João Paulo Mendes Tribst Polymerization Shrinkage, Hygroscopic Expansion, Elastic Modulus and Degree of Conversion of Different Composites for Dental Application Journal of Composites Science composite dental resin dental materials polymerization video recording |
| title | Polymerization Shrinkage, Hygroscopic Expansion, Elastic Modulus and Degree of Conversion of Different Composites for Dental Application |
| title_full | Polymerization Shrinkage, Hygroscopic Expansion, Elastic Modulus and Degree of Conversion of Different Composites for Dental Application |
| title_fullStr | Polymerization Shrinkage, Hygroscopic Expansion, Elastic Modulus and Degree of Conversion of Different Composites for Dental Application |
| title_full_unstemmed | Polymerization Shrinkage, Hygroscopic Expansion, Elastic Modulus and Degree of Conversion of Different Composites for Dental Application |
| title_short | Polymerization Shrinkage, Hygroscopic Expansion, Elastic Modulus and Degree of Conversion of Different Composites for Dental Application |
| title_sort | polymerization shrinkage hygroscopic expansion elastic modulus and degree of conversion of different composites for dental application |
| topic | composite dental resin dental materials polymerization video recording |
| url | https://www.mdpi.com/2504-477X/5/12/322 |
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