Alternatives in polymerization contraction stress management
Polymerization contraction stress of dental composites is often associated with marginal and interfacial failure of bonded restorations. The magnitude of the stress depends on the composite's composition (filler content and matrix composition) and its ability to flow before gelation, which is r...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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University of São Paulo
2004-01-01
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| Series: | Journal of Applied Oral Science |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572004000500002 |
| _version_ | 1818348794123649024 |
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| author | Roberto R. Braga Jack L. Ferracane |
| author_facet | Roberto R. Braga Jack L. Ferracane |
| author_sort | Roberto R. Braga |
| collection | DOAJ |
| description | Polymerization contraction stress of dental composites is often associated with marginal and interfacial failure of bonded restorations. The magnitude of the stress depends on the composite's composition (filler content and matrix composition) and its ability to flow before gelation, which is related to the cavity configuration and curing characteristics of the composite. This article reviews the variations found among studies regarding the contraction stress testing method, contraction stress values of current composites, and discusses the validity of contraction stress studies in relation to results from microleakage tests. The effect of lower curing rates and alternative curing routines on contraction stress values is also discussed, as well as the use of low elastic modulus liners. Moreover, studies with experimental Bis-GMA-based composites and recent developments in low-shrinkage monomers are described. |
| first_indexed | 2024-12-13T17:55:43Z |
| format | Article |
| id | doaj.art-c3a89836bbea4d9c90f3003d8029ba21 |
| institution | Directory Open Access Journal |
| issn | 1678-7757 1678-7765 |
| language | English |
| last_indexed | 2024-12-13T17:55:43Z |
| publishDate | 2004-01-01 |
| publisher | University of São Paulo |
| record_format | Article |
| series | Journal of Applied Oral Science |
| spelling | doaj.art-c3a89836bbea4d9c90f3003d8029ba212022-12-21T23:36:22ZengUniversity of São PauloJournal of Applied Oral Science1678-77571678-77652004-01-0112spe11110.1590/S1678-77572004000500002Alternatives in polymerization contraction stress managementRoberto R. BragaJack L. FerracanePolymerization contraction stress of dental composites is often associated with marginal and interfacial failure of bonded restorations. The magnitude of the stress depends on the composite's composition (filler content and matrix composition) and its ability to flow before gelation, which is related to the cavity configuration and curing characteristics of the composite. This article reviews the variations found among studies regarding the contraction stress testing method, contraction stress values of current composites, and discusses the validity of contraction stress studies in relation to results from microleakage tests. The effect of lower curing rates and alternative curing routines on contraction stress values is also discussed, as well as the use of low elastic modulus liners. Moreover, studies with experimental Bis-GMA-based composites and recent developments in low-shrinkage monomers are described.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572004000500002CompositesPolymerization stressElastic modulusShrinkage |
| spellingShingle | Roberto R. Braga Jack L. Ferracane Alternatives in polymerization contraction stress management Journal of Applied Oral Science Composites Polymerization stress Elastic modulus Shrinkage |
| title | Alternatives in polymerization contraction stress management |
| title_full | Alternatives in polymerization contraction stress management |
| title_fullStr | Alternatives in polymerization contraction stress management |
| title_full_unstemmed | Alternatives in polymerization contraction stress management |
| title_short | Alternatives in polymerization contraction stress management |
| title_sort | alternatives in polymerization contraction stress management |
| topic | Composites Polymerization stress Elastic modulus Shrinkage |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572004000500002 |
| work_keys_str_mv | AT robertorbraga alternativesinpolymerizationcontractionstressmanagement AT jacklferracane alternativesinpolymerizationcontractionstressmanagement |