Marginal leakage of two newer glass-ionomer-based sealant materials assessed using micro-CT
| Autor: | Mingwen Fan, J.E.F.M. Frencken, Xi Chen, V.M.J.I. Cuijpers |
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| Rok vydání: | 2010 |
| Předmět: |
Molar
Pit and Fissure Sealants Curing Lights Dental Silver Staining Materials science Time Factors Surface Properties Resin composite Composite number Glass ionomer cement Acrylic Resins Dentistry Dental Fissures Composite Resins Dental Materials Acid Etching Dental Materials Testing Humans Micro ct Dental Enamel General Dentistry Light-Curing of Dental Adhesives Dental Leakage business.industry Viscosity Sealant Temperature Biomaterial Effective primary care and public health [NCEBP 7] Marginal leakage X-Ray Microtomography Glass Ionomer Cements Glass business |
| Zdroj: | Journal of Dentistry, 38, 731-5 Journal of Dentistry, 38, 9, pp. 731-5 |
| ISSN: | 0300-5712 |
| Popis: | Contains fulltext : 87504.pdf (Publisher’s version ) (Closed access) OBJECTIVES: To test newer glass-ionomer-based materials as sealant materials. One glass-ionomer sealant was light-cured to obtain an early setting reaction. The null-hypothesis tested was: there is no difference in marginal leakage of sealants produced with high-viscosity glass-ionomer, with and without energy supplied, and that of glass-carbomer, in comparison with resin composite sealants in vitro. METHODS: Materials used were Clinpro, Ketac Molar Easymix and Glass-Carbomer. Sealants were placed in the occlusal surface of 89 molar teeth, thermocycled for 5000 cycles and evaluated using micro-CT for silver nitrate penetration depth at the enamel-sealant interface by two trained evaluators. Data were analysed, using ANOVA and Scheffe's test. RESULTS: Glass-carbomer sealants showed one or more 'fracture lines' in the material and at the enamel-material interface, filled with a kind of transparent, but not black coloured, material. High-viscosity glass-ionomer sealants with and without energy supplied had statistically significantly lower mean marginal leakage scores than sealants produced by composite resin (p |
| Databáze: | OpenAIRE |
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