Mechanical Properties of Elastomeric Impression Materials: An In Vitro Comparison
Purpose. Although new elastomeric impression materials have been introduced into the market, there are still insufficient data about their mechanical features. The tensile properties of 17 hydrophilic impression materials with different consistencies were compared. Materials and Methods. 12 vinylpol...
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | International Journal of Dentistry |
| Online Access: | http://dx.doi.org/10.1155/2015/428286 |
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| author | Dino Re Francesco De Angelis Gabriele Augusti Davide Augusti Sergio Caputi Maurizio D’Amario Camillo D’Arcangelo |
| author_facet | Dino Re Francesco De Angelis Gabriele Augusti Davide Augusti Sergio Caputi Maurizio D’Amario Camillo D’Arcangelo |
| author_sort | Dino Re |
| collection | DOAJ |
| description | Purpose. Although new elastomeric impression materials have been introduced into the market, there are still insufficient data about their mechanical features. The tensile properties of 17 hydrophilic impression materials with different consistencies were compared. Materials and Methods. 12 vinylpolysiloxane, 2 polyether, and 3 hybrid vinylpolyether silicone-based impression materials were tested. For each material, 10 dumbbell-shaped specimens were fabricated (n=10), according to the ISO 37:2005 specifications, and loaded in tension until failure. Mean values for tensile strength, yield strength, strain at break, and strain at yield point were calculated. Data were statistically analyzed using one-way ANOVA and Tukey’s tests (α=0.05). Results. Vinylpolysiloxanes consistently showed higher tensile strength values than polyethers. Heavy-body materials showed higher tensile strength than the light bodies from the same manufacturer. Among the light bodies, the highest yield strength was achieved by the hybrid vinylpolyether silicone (2.70 MPa). Polyethers showed the lowest tensile (1.44 MPa) and yield (0.94 MPa) strengths, regardless of the viscosity. Conclusion. The choice of an impression material should be based on the specific physical behavior of the elastomer. The light-body vinylpolyether silicone showed high tensile strength, yield strength, and adequate strain at yield/brake; those features might help to reduce tearing phenomena in the thin interproximal and crevicular areas. |
| format | Article |
| id | doaj-art-a7c60543e56240869ce14d509fd0d516 |
| institution | Kabale University |
| issn | 1687-8728 1687-8736 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Dentistry |
| spelling | doaj-art-a7c60543e56240869ce14d509fd0d5162025-02-03T01:30:09ZengWileyInternational Journal of Dentistry1687-87281687-87362015-01-01201510.1155/2015/428286428286Mechanical Properties of Elastomeric Impression Materials: An In Vitro ComparisonDino Re0Francesco De Angelis1Gabriele Augusti2Davide Augusti3Sergio Caputi4Maurizio D’Amario5Camillo D’Arcangelo6Department of Oral Rehabilitation, Istituto Stomatologico Italiano, University of Milan, 20122 Milan, ItalyDepartment of Medical, Oral and Biotechnological Sciences, University of Chieti, 66100 Chieti, ItalyDepartment of Oral Rehabilitation, Istituto Stomatologico Italiano, University of Milan, 20122 Milan, ItalyDepartment of Oral Rehabilitation, Istituto Stomatologico Italiano, University of Milan, 20122 Milan, ItalyDepartment of Medical, Oral and Biotechnological Sciences, University of Chieti, 66100 Chieti, ItalyDepartment of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, ItalyDepartment of Medical, Oral and Biotechnological Sciences, University of Chieti, 66100 Chieti, ItalyPurpose. Although new elastomeric impression materials have been introduced into the market, there are still insufficient data about their mechanical features. The tensile properties of 17 hydrophilic impression materials with different consistencies were compared. Materials and Methods. 12 vinylpolysiloxane, 2 polyether, and 3 hybrid vinylpolyether silicone-based impression materials were tested. For each material, 10 dumbbell-shaped specimens were fabricated (n=10), according to the ISO 37:2005 specifications, and loaded in tension until failure. Mean values for tensile strength, yield strength, strain at break, and strain at yield point were calculated. Data were statistically analyzed using one-way ANOVA and Tukey’s tests (α=0.05). Results. Vinylpolysiloxanes consistently showed higher tensile strength values than polyethers. Heavy-body materials showed higher tensile strength than the light bodies from the same manufacturer. Among the light bodies, the highest yield strength was achieved by the hybrid vinylpolyether silicone (2.70 MPa). Polyethers showed the lowest tensile (1.44 MPa) and yield (0.94 MPa) strengths, regardless of the viscosity. Conclusion. The choice of an impression material should be based on the specific physical behavior of the elastomer. The light-body vinylpolyether silicone showed high tensile strength, yield strength, and adequate strain at yield/brake; those features might help to reduce tearing phenomena in the thin interproximal and crevicular areas.http://dx.doi.org/10.1155/2015/428286 |
| spellingShingle | Dino Re Francesco De Angelis Gabriele Augusti Davide Augusti Sergio Caputi Maurizio D’Amario Camillo D’Arcangelo Mechanical Properties of Elastomeric Impression Materials: An In Vitro Comparison International Journal of Dentistry |
| title | Mechanical Properties of Elastomeric Impression Materials: An In Vitro Comparison |
| title_full | Mechanical Properties of Elastomeric Impression Materials: An In Vitro Comparison |
| title_fullStr | Mechanical Properties of Elastomeric Impression Materials: An In Vitro Comparison |
| title_full_unstemmed | Mechanical Properties of Elastomeric Impression Materials: An In Vitro Comparison |
| title_short | Mechanical Properties of Elastomeric Impression Materials: An In Vitro Comparison |
| title_sort | mechanical properties of elastomeric impression materials an in vitro comparison |
| url | http://dx.doi.org/10.1155/2015/428286 |
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