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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Leprince, J. Palin, W. M. Mullier, T. Devaux, J. Vreven, J. Leloup, G. |
| Description | Country affiliation: Belgium Author Affiliation: Leprince J ( School of Dentistry and Stomatology, Université catholique de Louvain, Brussels, Belgium. julian.leprince@uclouvain.be) |
| Abstract | Three types of low-shrinkage composites are today commercially available: Ormocers, cationic ring-opening curing systems and highly filled methacrylate-based materials, which cure via free-radical polymerization mechanisms. The aim of this study was to characterize the inorganic fraction of materials belonging to each type and to compare their mechanical properties. Two Ormocers (Admira and an experimental Ormocer V35694), one ring-opening composite (Filtek Silorane) and five methacrylate-based composites [Filtek Supreme XT, Tetric EvoCeram, Grandio, Synergy D6 (Coltène-Whaledent, Langenau, Germany) and an experimental material, V34930] were tested. Inorganic fillers were quantified by thermogravimetric analysis and morphologically characterized by scanning electron microscopy. Dynamic modulus was determined by an impulse excitation technique, static elastic moduli and flexural strength by a three-point bending method. The results were analyzed using ANOVA tests (P < 0.05) and linear correlations. Grandio, V34930 and V35694 exhibited significantly higher filler mass fractions. Both dynamic and static moduli of Grandio and V34930 were significantly higher than the other materials (P < 0.05), although no significant difference in flexural strength was observed between material type (P > 0.05). From the present findings, it was suggested that V35694 and Filtek Silorane exhibit comparable properties to conventional methacrylate-based composites, although clinically the cavity type and location must guide material choice. Under high occlusal load, the use of Grandio and V34930 might be favoured. For small cavities, alternative technologies could be preferred as the need for mechanical resistance is lower and the potential for stress generation is greater. |
| File Format | HTM / HTML |
| ISSN | 0305182X |
| Issue Number | 5 |
| Volume Number | 37 |
| e-ISSN | 13652842 |
| Journal | Journal of Oral Rehabilitation |
| Language | English |
| Publisher | Wiley-Blackwell |
| Publisher Date | 2010-05-01 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Dentistry Composite Resins Chemistry Dental Marginal Adaptation Light-curing Of Dental Adhesives Analysis Of Variance Radiation Effects Dental Stress Analysis Elastic Modulus Hardness Linear Models Materials Testing Methacrylates Nanocomposites Particle Size Phase Transition Pliability Siloxanes Statistics, Nonparametric Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Dentistry |
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