Microcomputed tomography evaluation of polymerization shrinkage of class i flowable resin composite restorations

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dc.coverageDOI: 10.2341/15-296-L
dc.creatorSampaio, C. S.
dc.creatorChiu, K. J.
dc.creatorFarrokhmanesh, E.
dc.creatorJanal, M.
dc.creatorPuppin-Rontani, R. M.
dc.creatorGiannini, M.
dc.creatorBonfante, E. A.
dc.creatorCoelho, P. G.
dc.creatorHirata, R.
dc.date2017
dc.date.accessioned2025-11-18T19:53:49Z
dc.date.available2025-11-18T19:53:49Z
dc.description<p>The present study aimed to characterize the pattern and volume of polymerization shrinkage of flowable resin composites, including one conventional, two bulk fill, and one self-adhesive Standardized class I preparations (2.5 mm depth × 4 mm length × 4 mm wide) were performed in 24 caries-free human third molars that were randomly divided in four groups, according to the resin composite and adhesive system used: group 1 = Permaflo + Peak Universal Bond (PP); group 2 = Filtek Bulk Fill + Scotchbond Universal (FS); group 3 = Surefil SDR + XP Bond (SX); and group 4 = Vertise flow self-adhering (VE) (n=6). Each tooth was scanned three times using a microcomputed tomography (μCT) apparatus. The first scan was done after the cavity preparation, the second after cavity filling with the flowable resin composite before curing, and the third after it was cured. The μCT images were imported into three-dimensional rendering software, and volumetric polymerization shrinkage percentage was calculated for each sample. Data were submitted to one-way analysis of variance and post hoc comparisons. No significant difference was observed among PP, FS, and VE. SX bulk fill resin composite presented the lowest values of volumetric shrinkage. Shrinkage was mostly observed along the occlusal surface and part of the pulpal floor. In conclusion, polymerization shrinkage outcomes in a 2.5-mm deep class I cavity were material dependent, although most materials did not differ. The location of shrinkage was mainly at the occlusal surface.</p>eng
dc.descriptionThe present study aimed to characterize the pattern and volume of polymerization shrinkage of flowable resin composites, including one conventional, two bulk fill, and one self-adhesive Standardized class I preparations (2.5 mm depth × 4 mm length × 4 mm wide) were performed in 24 caries-free human third molars that were randomly divided in four groups, according to the resin composite and adhesive system used: group 1 = Permaflo + Peak Universal Bond (PP); group 2 = Filtek Bulk Fill + Scotchbond Universal (FS); group 3 = Surefil SDR + XP Bond (SX); and group 4 = Vertise flow self-adhering (VE) (n=6). Each tooth was scanned three times using a microcomputed tomography (μCT) apparatus. The first scan was done after the cavity preparation, the second after cavity filling with the flowable resin composite before curing, and the third after it was cured. The μCT images were imported into three-dimensional rendering software, and volumetric polymerization shrinkage percentage was calculated for each sample. Data were submitted to one-way analysis of variance and post hoc comparisons. No significant difference was observed among PP, FS, and VE. SX bulk fill resin composite presented the lowest values of volumetric shrinkage. Shrinkage was mostly observed along the occlusal surface and part of the pulpal floor. In conclusion, polymerization shrinkage outcomes in a 2.5-mm deep class I cavity were material dependent, although most materials did not differ. The location of shrinkage was mainly at the occlusal surface.spa
dc.identifierhttps://investigadores.uandes.cl/en/publications/0edc39ec-17e3-4a28-b177-fe10c135916e
dc.identifier.urihttps://repositorio.uandes.cl/handle/uandes/58447
dc.languageeng
dc.rightsinfo:eu-repo/semantics/openAccess
dc.sourcevol.42 (2017) date: 2017-01-01 nr.1 p.E16-E23
dc.subjectComposite Resins
dc.subjectDental Cements
dc.subjectDental Restoration
dc.subjectPermanent
dc.subjectDentin-Bonding Agents
dc.subjectHumans
dc.subjectIn Vitro Techniques
dc.subjectMaterials Testing
dc.subjectMolar
dc.subjectThird
dc.subjectPolymerization
dc.subjectRandom Allocation
dc.subjectResin Cements
dc.subjectSurface Properties
dc.subjectX-Ray Microtomography
dc.titleMicrocomputed tomography evaluation of polymerization shrinkage of class i flowable resin composite restorationseng
dc.typeArticleeng
dc.typeArtículospa
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