dc.creator | Miletić, Vesna | |
dc.creator | Manojlović, Dragica | |
dc.creator | Milošević, Miloš | |
dc.creator | Mitrović, Nenad | |
dc.creator | Savić-Sikoparija, Tatjana | |
dc.creator | Maneski, Tasko | |
dc.date.accessioned | 2020-07-02T12:33:34Z | |
dc.date.available | 2020-07-02T12:33:34Z | |
dc.date.issued | 2011 | |
dc.identifier.issn | 0033-6572 | |
dc.identifier.uri | https://smile.stomf.bg.ac.rs/handle/123456789/1634 | |
dc.description.abstract | Objective: To analyze local shrinkage patterns in terms of surface shrinkage strains and z-axis displacements in a novel self-adhering composite and a conventional flowable composite using three-dimensional digital image correlation. Method and Materials: Seven samples of each material were prepared in cylindrical Teflon molds 5 mm in diameter and 2 mm thick. The surface of the composites facing the cameras was sprayed with a fine layer of black paint. The unsprayed surface of each sample, opposite the one facing the cameras, was light cured for 40 seconds using a light-emitting diode unit. Digital images were taken immediately before and after light curing. Shrinkage was calculated as von Mises strains, and z-axis displacements were measured in microns. The data were statistically analyzed using two-way ANOVA at alpha = .05. Results: No significant difference in strain was observed between the two materials (P > .05). Strain distribution was nonhomogenous-the outer segments showed significantly higher strains than central parts in each material (P lt .05). The opposite was observed for z-axis displacements-significantly greater displacements were found in central parts compared to the outer segments (P lt .05). Conclusion: Different shrinkage vectors across the surface of the tested flowable composites showed predominant in-plane shrinkage of the outer surface segments and out-of-plane shrinkage of the inner segments. These complex local deformation patterns in composite materials indicate zones of different types of forces exerted on the tooth-restoration interface in situ. (Quintessence Int 2011;42:797-804) | en |
dc.rights | restrictedAccess | |
dc.source | Quintessence International | |
dc.subject | 3D measurement | en |
dc.subject | digital image correlation | en |
dc.subject | flowable composite | en |
dc.subject | polymerization | en |
dc.subject | shrinkage | en |
dc.subject | strain | en |
dc.title | Analysis of local shrinkage patterns of self-adhering and flowable composites using 3D digital image correlation | en |
dc.type | article | |
dc.rights.license | ARR | |
dcterms.abstract | Манески, Таско; Манојловић, Драгица; Савић-Сикопарија, Татјана; Митровић, Ненад; Милошевић, Милош; Милетић, Весна; | |
dc.citation.volume | 42 | |
dc.citation.issue | 9 | |
dc.citation.spage | 797 | |
dc.citation.epage | 804 | |
dc.citation.other | 42(9): 797-804 | |
dc.citation.rank | M23 | |
dc.identifier.wos | 000296892100011 | |
dc.identifier.pmid | 21909505 | |
dc.identifier.scopus | 2-s2.0-84857381443 | |
dc.identifier.rcub | https://hdl.handle.net/21.15107/rcub_smile_1634 | |
dc.type.version | publishedVersion | |