Cited 27 times in
Comparison of Internal Adaptation in Class II Bulk-fill Composite Restorations Using Micro-CT
DC Field | Value | Language |
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dc.contributor.author | 박성호 | - |
dc.date.accessioned | 2017-11-02T08:26:51Z | - |
dc.date.available | 2017-11-02T08:26:51Z | - |
dc.date.issued | 2017 | - |
dc.identifier.issn | 0361-7734 | - |
dc.identifier.uri | https://ir.ymlib.yonsei.ac.kr/handle/22282913/154478 | - |
dc.description.abstract | PURPOSE: This study compared the internal adaptation of bulk-fill composite restorations in class II cavities and explored the relationship between internal adaptation and polymerization shrinkage or stress. METHODS AND MATERIALS: Standardized mesio-occluso-distal cavities were prepared in 40 extracted human third molars and randomly divided into five groups (n=8). After having been applied by total-etch XP bond (Dentsply Caulk, Milford, DE, USA) and light curing, the teeth were restored with the following resin composites: group 1, Filtek Z350 (3M ESPE, St. Paul, MN, USA); group 2, SDR (Dentsply Caulk, Milford, DE, USA) + Z350; group 3, Venus Bulk Fill (Heraeus Kulzer, Dormagen, Germany) + Z350; group 4, Tetric N-Ceram Bulk Fill (Ivoclar Vivadent, Schaan, Liechtenstein); and group 5, SonicFill (Kerr, West Collins, Orange, CA, USA). After thermo-mechanical load cycling, cross-sectional microcomputerized tomography (micro-CT) images were taken. Internal adaptation was measured as imperfect margin percentage (IM%), which was the percentage of defective margin length relative to whole margin length. On the micro-CT images, IM% was measured at five interfaces. Linear polymerization shrinkage (LS) and polymerization shrinkage stress (PS) were measured on each composite with a custom linometer and universal testing machine. To explore the correlation of IM% and LS or PS, the Pearson correlation test was used. RESULTS: The IM% of the gingival and pulpal cavity floors were inferior to those of the cavity walls. The IM% values of the groups were found to be as follows: group 5 ≤ groups 1 and 4 ≤ group 2 ≤ group 3. The correlation analysis showed that the p value was 0.006 between LS and IM% and 0.003 between PS and IM%, indicating significant correlations (p<0.05). CONCLUSION: Flowable bulk-fill composites had a higher IM% and polymerization shrinkage stress than did packable bulk-fill and hybrid composites. In class II composite restoration, the gingival floor of the proximal box and pulpal floor of the cavity had higher IM% than did the buccal and lingual walls of the proximal box. LS and PS, which were measured under compliance-allowed conditions, were significantly related to internal adaptation. | - |
dc.description.statementOfResponsibility | restriction | - |
dc.language | English | - |
dc.publisher | Univ. of Washington, School of Dentistry | - |
dc.relation.isPartOf | OPERATIVE DENTISTRY | - |
dc.rights | CC BY-NC-ND 2.0 KR | - |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/2.0/kr/ | - |
dc.subject.MESH | Composite Resins/chemistry* | - |
dc.subject.MESH | Dental Marginal Adaptation | - |
dc.subject.MESH | Dental Restoration, Permanent/methods* | - |
dc.subject.MESH | Dentin-Bonding Agents | - |
dc.subject.MESH | Humans | - |
dc.subject.MESH | In Vitro Techniques | - |
dc.subject.MESH | Light-Curing of Dental Adhesives | - |
dc.subject.MESH | Molar, Third | - |
dc.subject.MESH | Polymerization | - |
dc.subject.MESH | Random Allocation | - |
dc.subject.MESH | Surface Properties | - |
dc.subject.MESH | X-Ray Microtomography* | - |
dc.title | Comparison of Internal Adaptation in Class II Bulk-fill Composite Restorations Using Micro-CT | - |
dc.type | Article | - |
dc.publisher.location | United States | - |
dc.contributor.college | College of Dentistry | - |
dc.contributor.department | Dept. of Conservative Dentistry | - |
dc.contributor.googleauthor | SH Han | - |
dc.contributor.googleauthor | SH Park | - |
dc.identifier.doi | 10.2341/16-023-L | - |
dc.contributor.localId | A01514 | - |
dc.relation.journalcode | J02426 | - |
dc.identifier.eissn | 1559-2863 | - |
dc.identifier.pmid | 27892836 | - |
dc.identifier.url | http://www.jopdentonline.org/doi/abs/10.2341/16-023-L | - |
dc.contributor.alternativeName | Park, Sung Ho | - |
dc.contributor.affiliatedAuthor | Park, Sung Ho | - |
dc.citation.title | Operative Dentistry | - |
dc.citation.volume | 42 | - |
dc.citation.number | 2 | - |
dc.citation.startPage | 203 | - |
dc.citation.endPage | 214 | - |
dc.identifier.bibliographicCitation | OPERATIVE DENTISTRY, Vol.42(2) : 203-214, 2017 | - |
dc.date.modified | 2017-11-01 | - |
dc.identifier.rimsid | 43052 | - |
dc.type.rims | ART | - |
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