Assessment of cuspal deflection and volumetric shrinkage of different bulk fill composites using non-contact phase microscopy and micro-computed tomography

Simple item page
dc.coverageDOI: 10.4012/dmj.2017-136
dc.creatorPrager, Martin
dc.creatorPierce, Mark
dc.creatorAtria, Pablo J.
dc.creatorSampaio, Camila
dc.creatorCáceres, Eduardo
dc.creatorWolff, Mark
dc.creatorGiannini, Marcelo
dc.creatorHirata, Ronaldo
dc.date2018
dc.date.accessioned2025-11-18T19:53:53Z
dc.date.available2025-11-18T19:53:53Z
dc.description<p>The understanding of cuspal deflection and volumetric shrinkage of resin composites is necessary to assess and improve the placement techniques of resin-based materials. The aim of this study was to investigate the cuspal deflection and its relationship with volumetric polymerization shrinkage of different bulk-fill resin composites. The investigation was conducted using non-contact phase microscopy and micro-computed tomography. Thirty custom-milled aluminum blocks were fabricated for microscopy analysis and thirty-six tooth models with standardized Class I cavities were used for micro-computed tomography analysis. Results showed that high-viscosity composites present higher cuspal deflection compared to bulk-fill composites. The filler loading of resin composites seems to have an effect on cusp deflection, since the higher the filler content percentage, the higher the cusp deflection. On the other hand, it seems to have an opposite effect on volumetric shrinkage, since higher filler loadings produced lower volumetric shrinkage percentages.</p>eng
dc.descriptionThe understanding of cuspal deflection and volumetric shrinkage of resin composites is necessary to assess and improve the placement techniques of resin-based materials. The aim of this study was to investigate the cuspal deflection and its relationship with volumetric polymerization shrinkage of different bulk-fill resin composites. The investigation was conducted using non-contact phase microscopy and micro-computed tomography. Thirty custom-milled aluminum blocks were fabricated for microscopy analysis and thirty-six tooth models with standardized Class I cavities were used for micro-computed tomography analysis. Results showed that high-viscosity composites present higher cuspal deflection compared to bulk-fill composites. The filler loading of resin composites seems to have an effect on cusp deflection, since the higher the filler content percentage, the higher the cusp deflection. On the other hand, it seems to have an opposite effect on volumetric shrinkage, since higher filler loadings produced lower volumetric shrinkage percentages.spa
dc.identifierhttps://investigadores.uandes.cl/en/publications/648ca827-1f47-491b-93eb-4f84036b1bc0
dc.identifier.urihttps://repositorio.uandes.cl/handle/uandes/58479
dc.languageeng
dc.rightsinfo:eu-repo/semantics/openAccess
dc.sourcevol.37 (2018) nr.3 p.393-399
dc.subjectComposite
dc.subjectComputed-tomography
dc.subjectCuspal
dc.subjectLight-curing
dc.subjectShrinkage
dc.subjectComposite
dc.subjectComputed-tomography
dc.subjectCuspal
dc.subjectLight-curing
dc.subjectShrinkage
dc.titleAssessment of cuspal deflection and volumetric shrinkage of different bulk fill composites using non-contact phase microscopy and micro-computed tomographyeng
dc.typeArticleeng
dc.typeArtículospa
Files
Collections
PURE