Comparative evaluation of the surface hardness of different esthetic restorative materials: An in vitro study
| Autor: | Binitha M Kalathil, Deepthi Nenavath, V S Chaitra, Anoop Samuel, Rinsa Raju, K B Sreejith |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
resin composite
Materials science lcsh:QD71-142 Significant difference Composite number surface hardness Clinical performance lcsh:Analytical chemistry lcsh:RS1-441 Bioengineering Indentation hardness Hardness General Biochemistry Genetics and Molecular Biology Comparative evaluation lcsh:Pharmacy and materia medica Vickers hardness test depth of cure In vitro study incremental fill composite Original Article General Pharmacology Toxicology and Pharmaceutics Composite material |
| Zdroj: | Journal of Pharmacy and Bioallied Sciences, Vol 12, Iss 5, Pp 124-128 (2020) Journal of Pharmacy & Bioallied Sciences |
| ISSN: | 0975-7406 |
| Popis: | Aim: The aim of this study was to evaluate the surface hardness of a newly developed fiber-reinforced composite and bulkfill composites. Materials and Methods: Fiber-reinforced composite and other commercially available bulkfill composites were used. Fifteen cylindrical specimens (5 mm × 5 mm) were made from each material in metal template. Molds were filled in one increment for both bulkfill composites and fiber-reinforced composite and cured using Ivoclar blue phase light-curing unit at a wavelength of 850 mW/cm2. A dark container was used to store specimens to keep dry at room temperature for 24 h before testing. Vickers hardness number (VHN) on the top and bottom surfaces of each specimen was measured by a microhardness tester. Data for VHN were analyzed by using analysis of variance (ANOVA) and pair-wise Newman–Keuls test. Results: No significant difference was observed in Vickers hardness test. The mean value of VHN on the top and bottom surfaces showed significant difference from each other. Fiber-reinforced composite showed the highest VHN as compared with other materials. Conclusion: Fiber-reinforced composite has the highest Vickers hardness ratio indicating highest degree of conversion and better clinical performance. |
| Databáze: | OpenAIRE |
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