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Article: The influence of hygroscopic expansion of resin-based restorative materials on artificial gap reduction
Title | The influence of hygroscopic expansion of resin-based restorative materials on artificial gap reduction |
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Authors | |
Issue Date | 2002 |
Publisher | Quintessence Publishing Co Ltd. The Journal's web site is located at http://www.quintessencepublishing.co.uk/catalog/product_info.php?cPath=3&products_id=243 |
Citation | Journal Of Adhesive Dentistry, 2002, v. 4 n. 1, p. 61-71 How to Cite? |
Abstract | Purpose: This study compared the effect of water sorption on the extent of marginal gap reduction in two resin-modified glass-ionomer cements (RMGICs), two giomers, two compomers, and two resin composites over a twelve-week storage period. Materials and Methods: Artificial gaps were created in 160 borosilicate glass cylinders. One-half of the internal surface of each cylinder was blocked out with wax and the other half was sandblasted. The bonding surface was further treated with 4% hydrofluoric acid, rinsed, and then coated with silane. After removal of the wax, one coat of dentin adhesive was applied to the silane-treated surface of the cylinder, briefly air dried and light cured. Eight light-cured restorative materials were placed incrementally: Vitremer (V), Fuji II LC (FJ), Beautifil (B), Reactmer Paste (R), Compoglass F (C), F2000 (F), Filtek Z250 (Z), and Tetric-Ceram (T). For each material, ten specimens were stored in deionized water (W), and ten (control) in nonaqueous silicone fluid (0) at 37°C. The dimension of the same maximum gap created in each specimen was repeatedly measured at 0, 1, 2, 4, 6, 8, 10, and 12 weeks. Results: R-W exhibited extensive hygroscopic expansion that resulted in cracking of 40% of glass cylinders after the 2nd week and 70% after the 4th week. One-way ANOVA of the other seven water groups showed significant differences (p < 0.001) among gap widths measured at different time intervals in V-W, FJ-W, C-W, F-W. Both RMGICs had the most significant gap reduction during the first week (p < 0.001). Both compomers exhibited delayed water-sorption characteristics, with more significant gap reduction observed in C-W. B-W was similar to the two resin composites Z-W and T-W and exhibited the least gap reduction. After the first week, there were no significant differences in the percentage reduction in marginal gaps for any of the groups (p > 0.05). Conclusion: Marginal gap reduction that results from water sorption is more extensive and rapid in RMG-ICs, followed by compomers, whereas composites are relatively stable. Reactmer Paste exhibits rapid and extensive expansion and should probably be avoided in tooth preparations that involve thin unsupported enamel. |
Persistent Identifier | http://hdl.handle.net/10722/154192 |
ISSN | 2023 Impact Factor: 2.5 2023 SCImago Journal Rankings: 0.793 |
References |
DC Field | Value | Language |
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dc.contributor.author | Huang, C | en_US |
dc.contributor.author | Kei, LH | en_US |
dc.contributor.author | Wei, SHY | en_US |
dc.contributor.author | Cheung, GSP | en_US |
dc.contributor.author | Tay, FR | en_US |
dc.contributor.author | Pashley, DH | en_US |
dc.date.accessioned | 2012-08-08T08:23:48Z | - |
dc.date.available | 2012-08-08T08:23:48Z | - |
dc.date.issued | 2002 | en_US |
dc.identifier.citation | Journal Of Adhesive Dentistry, 2002, v. 4 n. 1, p. 61-71 | en_US |
dc.identifier.issn | 1461-5185 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/154192 | - |
dc.description.abstract | Purpose: This study compared the effect of water sorption on the extent of marginal gap reduction in two resin-modified glass-ionomer cements (RMGICs), two giomers, two compomers, and two resin composites over a twelve-week storage period. Materials and Methods: Artificial gaps were created in 160 borosilicate glass cylinders. One-half of the internal surface of each cylinder was blocked out with wax and the other half was sandblasted. The bonding surface was further treated with 4% hydrofluoric acid, rinsed, and then coated with silane. After removal of the wax, one coat of dentin adhesive was applied to the silane-treated surface of the cylinder, briefly air dried and light cured. Eight light-cured restorative materials were placed incrementally: Vitremer (V), Fuji II LC (FJ), Beautifil (B), Reactmer Paste (R), Compoglass F (C), F2000 (F), Filtek Z250 (Z), and Tetric-Ceram (T). For each material, ten specimens were stored in deionized water (W), and ten (control) in nonaqueous silicone fluid (0) at 37°C. The dimension of the same maximum gap created in each specimen was repeatedly measured at 0, 1, 2, 4, 6, 8, 10, and 12 weeks. Results: R-W exhibited extensive hygroscopic expansion that resulted in cracking of 40% of glass cylinders after the 2nd week and 70% after the 4th week. One-way ANOVA of the other seven water groups showed significant differences (p < 0.001) among gap widths measured at different time intervals in V-W, FJ-W, C-W, F-W. Both RMGICs had the most significant gap reduction during the first week (p < 0.001). Both compomers exhibited delayed water-sorption characteristics, with more significant gap reduction observed in C-W. B-W was similar to the two resin composites Z-W and T-W and exhibited the least gap reduction. After the first week, there were no significant differences in the percentage reduction in marginal gaps for any of the groups (p > 0.05). Conclusion: Marginal gap reduction that results from water sorption is more extensive and rapid in RMG-ICs, followed by compomers, whereas composites are relatively stable. Reactmer Paste exhibits rapid and extensive expansion and should probably be avoided in tooth preparations that involve thin unsupported enamel. | en_US |
dc.language | eng | en_US |
dc.publisher | Quintessence Publishing Co Ltd. The Journal's web site is located at http://www.quintessencepublishing.co.uk/catalog/product_info.php?cPath=3&products_id=243 | en_US |
dc.relation.ispartof | Journal of Adhesive Dentistry | en_US |
dc.subject.mesh | Acid Etching, Dental | en_US |
dc.subject.mesh | Analysis Of Variance | en_US |
dc.subject.mesh | Bisphenol A-Glycidyl Methacrylate | en_US |
dc.subject.mesh | Compomers - Chemistry | en_US |
dc.subject.mesh | Composite Resins - Chemistry | en_US |
dc.subject.mesh | Dentin-Bonding Agents - Chemistry | en_US |
dc.subject.mesh | Glass - Chemistry | en_US |
dc.subject.mesh | Glass Ionomer Cements - Chemistry | en_US |
dc.subject.mesh | Humans | en_US |
dc.subject.mesh | Hydrofluoric Acid - Chemistry | en_US |
dc.subject.mesh | Polyethylene Glycols - Chemistry | en_US |
dc.subject.mesh | Polymethacrylic Acids - Chemistry | en_US |
dc.subject.mesh | Resin Cements - Chemistry | en_US |
dc.subject.mesh | Resins, Synthetic - Chemistry | en_US |
dc.subject.mesh | Silanes - Chemistry | en_US |
dc.subject.mesh | Silicates - Chemistry | en_US |
dc.subject.mesh | Silicones - Chemistry | en_US |
dc.subject.mesh | Surface Properties | en_US |
dc.subject.mesh | Time Factors | en_US |
dc.subject.mesh | Water - Chemistry | en_US |
dc.title | The influence of hygroscopic expansion of resin-based restorative materials on artificial gap reduction | en_US |
dc.type | Article | en_US |
dc.identifier.email | Cheung, GSP:spcheung@hkucc.hku.hk | en_US |
dc.identifier.authority | Cheung, GSP=rp00016 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.pmid | 12071630 | - |
dc.identifier.scopus | eid_2-s2.0-0036490755 | en_US |
dc.identifier.hkuros | 72304 | - |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-0036490755&selection=ref&src=s&origin=recordpage | en_US |
dc.identifier.volume | 4 | en_US |
dc.identifier.issue | 1 | en_US |
dc.identifier.spage | 61 | en_US |
dc.identifier.epage | 71 | en_US |
dc.publisher.place | United Kingdom | en_US |
dc.identifier.scopusauthorid | Huang, C=9747406100 | en_US |
dc.identifier.scopusauthorid | Kei, LH=6602484458 | en_US |
dc.identifier.scopusauthorid | Wei, SHY=7401765260 | en_US |
dc.identifier.scopusauthorid | Cheung, GSP=7005809531 | en_US |
dc.identifier.scopusauthorid | Tay, FR=7102091962 | en_US |
dc.identifier.scopusauthorid | Pashley, DH=35448600800 | en_US |
dc.identifier.issnl | 1461-5185 | - |