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Internal adaptation of composite restorations with or without an intermediate layer: Effect of polymerization shrinkage parameters of the layer material

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dc.contributor.author박성호-
dc.date.accessioned2019-02-14T01:59:34Z-
dc.date.available2019-02-14T01:59:34Z-
dc.date.issued2019-
dc.identifier.issn0300-5712-
dc.identifier.urihttps://ir.ymlib.yonsei.ac.kr/handle/22282913/167329-
dc.description.abstractOBJECTIVES: The purpose of this study was to compare the internal adaptation of resin composite restorations in Class I cavities with or without an intermediate layer, and to identify the relationships between the internal adaptation and the polymerization shrinkage parameters of the layer material. METHODS: Class I cavities prepared in human third molars were treated with a one-step self-etch adhesive (G-Premio Bond, GC). In the control group, Tetric-EvoCeram Bulk-Fill (TBF, Ivoclar Vivadent) was placed using the bulk-fill technique and then light-cured. In the experimental groups, six different layer materials (three flowable resin composites, two bulk-fill resin composites, and a resin-modified glass-ionomer) were applied to a 1.5-mm thickness and light-cured, which was followed by TBF filling. After thermo-cycling, internal adaptation was measured using swept-source optical coherence tomography (SS-OCT) imaging and compared in terms of high brightness percentage (HB%) to represent the microgap. Shrinkage strain (SS), flexural modulus (FM), and polymerization shrinkage stress of the intermediate layer-resin composite complex (PS) were measured for each material. The relationships among HB%, SS, FM, and PS were evaluated statistically. RESULTS: Groups with an intermediate layer showed lower HB% than the control group. The HB% correlated with PS (Pearson's correlation: R2 = 0.883, p < 0.05), and the PS correlated with the product of SS and FM. CONCLUSION: Internal adaptation depended on the polymerization shrinkage stress of the intermediate layer-resin composite complex. CLINICAL SIGNIFICANCE: Bulk-fill resin composite, which can show low polymerization shrinkage stress, may be used as an intermediate layer for better internal adaptation.-
dc.description.statementOfResponsibilityrestriction-
dc.languageEnglish-
dc.publisherElsevier-
dc.relation.isPartOfJOURNAL OF DENTISTRY-
dc.rightsCC BY-NC-ND 2.0 KR-
dc.rightshttps://creativecommons.org/licenses/by-nc-nd/2.0/kr/-
dc.titleInternal adaptation of composite restorations with or without an intermediate layer: Effect of polymerization shrinkage parameters of the layer material-
dc.typeArticle-
dc.contributor.collegeCollege of Dentistry (치과대학)-
dc.contributor.departmentDept. of Conservative Dentistry (보존과학교실)-
dc.contributor.googleauthorSeung-Hoon Han-
dc.contributor.googleauthorAlireza Sadr-
dc.contributor.googleauthorYasushi Shimada-
dc.contributor.googleauthorJunji Tagami-
dc.contributor.googleauthorSung-Ho Park-
dc.identifier.doi10.1016/j.jdent.2018.10.013-
dc.contributor.localIdA01514-
dc.relation.journalcodeJ01368-
dc.identifier.eissn1879-176X-
dc.identifier.pmid30391684-
dc.identifier.urlhttps://www.sciencedirect.com/science/article/pii/S0300571218306377-
dc.subject.keywordBulk fill-
dc.subject.keywordComposite restoration-
dc.subject.keywordFlowable liner-
dc.subject.keywordIntermediate layer-
dc.subject.keywordInternal adaptation-
dc.subject.keywordPolymerization shrinkage stress-
dc.contributor.alternativeNamePark, Sung Ho-
dc.contributor.affiliatedAuthor박성호-
dc.citation.volume80-
dc.citation.startPage41-
dc.citation.endPage48-
dc.identifier.bibliographicCitationJOURNAL OF DENTISTRY, Vol.80 : 41-48, 2019-
dc.identifier.rimsid61529-
dc.type.rimsART-
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Conservative Dentistry (보존과학교실) > 1. Journal Papers

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