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- Publisher Website: 10.1016/j.dental.2015.01.018
- Scopus: eid_2-s2.0-84925712402
- PMID: 25702975
- WOS: WOS:000351683500016
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Article: 3D volumetric displacement and strain analysis of composite polymerization
Title | 3D volumetric displacement and strain analysis of composite polymerization |
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Authors | |
Keywords | Composite materials Image registration Micro-computed tomography Shrinkage |
Issue Date | 2015 |
Citation | Dental Materials, 2015, v. 31, n. 4, p. 453-461 How to Cite? |
Abstract | Objective The present study aimed at a better understanding of the internal shrinkage patterns within different cavity sizes. Methods Ten cylindrical cavities in two sizes were filled with a flowable composite and scanned using X-ray micro-computed tomography (μ-CT) before filling, before and after polymerization. Three-dimensional (3D) non-rigid image registration was applied to sets of two subsequent μ-CT images, before and after polymerization in order to calculate the displacements and strains caused by polymerization shrinkage. Results 3D volumetric displacement analysis disclosed a main vertical component for both the small and large cavities, however in the latter the downward direction reversed to an upward direction from a depth of approximately 2 mm due to debonding at the bottom. Air bubbles and voids in the restorations increased upon polymerization, causing a reverse in strain in the surrounding areas. Significance Polymerization-induced shrinkage stress in composite restorations cannot be measured directly. This exploratory study revealed more information on cavity-size dependent shrinkage patterns and opens the way to more extensive studies using different composite materials and varying geometric cavity configurations. |
Persistent Identifier | http://hdl.handle.net/10722/327741 |
ISSN | 2023 Impact Factor: 4.6 2023 SCImago Journal Rankings: 1.186 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Van Ende, Annelies | - |
dc.contributor.author | Van De Casteele, Elke | - |
dc.contributor.author | Depypere, Maarten | - |
dc.contributor.author | De Munck, Jan | - |
dc.contributor.author | Li, Xin | - |
dc.contributor.author | Maes, Frederik | - |
dc.contributor.author | Wevers, Martine | - |
dc.contributor.author | Van Meerbeek, Bart | - |
dc.date.accessioned | 2023-05-08T02:26:30Z | - |
dc.date.available | 2023-05-08T02:26:30Z | - |
dc.date.issued | 2015 | - |
dc.identifier.citation | Dental Materials, 2015, v. 31, n. 4, p. 453-461 | - |
dc.identifier.issn | 0109-5641 | - |
dc.identifier.uri | http://hdl.handle.net/10722/327741 | - |
dc.description.abstract | Objective The present study aimed at a better understanding of the internal shrinkage patterns within different cavity sizes. Methods Ten cylindrical cavities in two sizes were filled with a flowable composite and scanned using X-ray micro-computed tomography (μ-CT) before filling, before and after polymerization. Three-dimensional (3D) non-rigid image registration was applied to sets of two subsequent μ-CT images, before and after polymerization in order to calculate the displacements and strains caused by polymerization shrinkage. Results 3D volumetric displacement analysis disclosed a main vertical component for both the small and large cavities, however in the latter the downward direction reversed to an upward direction from a depth of approximately 2 mm due to debonding at the bottom. Air bubbles and voids in the restorations increased upon polymerization, causing a reverse in strain in the surrounding areas. Significance Polymerization-induced shrinkage stress in composite restorations cannot be measured directly. This exploratory study revealed more information on cavity-size dependent shrinkage patterns and opens the way to more extensive studies using different composite materials and varying geometric cavity configurations. | - |
dc.language | eng | - |
dc.relation.ispartof | Dental Materials | - |
dc.subject | Composite materials | - |
dc.subject | Image registration | - |
dc.subject | Micro-computed tomography | - |
dc.subject | Shrinkage | - |
dc.title | 3D volumetric displacement and strain analysis of composite polymerization | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.dental.2015.01.018 | - |
dc.identifier.pmid | 25702975 | - |
dc.identifier.scopus | eid_2-s2.0-84925712402 | - |
dc.identifier.volume | 31 | - |
dc.identifier.issue | 4 | - |
dc.identifier.spage | 453 | - |
dc.identifier.epage | 461 | - |
dc.identifier.isi | WOS:000351683500016 | - |