Internal fit of two all-ceramic systems and metal-ceramic crowns
| Autor: | Pedro Oliveira, José Luiz Góes de Oliveira, Fabio Cesar Lorenzoni, Luciana Mendonça da Silva, Leandro M. Martins, Alcides Oliveira de Melo, Gerson Bonfante |
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| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Ceramics
Materials science Dental Impression Technique All ceramic Surface Properties medicine.medical_treatment Tetragonal zirconia polycrystals Metal Ceramic Alloys Dentistry Composite Resins CAD-CAM Crown (dentistry) Dental adaptation Materials Testing medicine Maxillary first molar Aluminum Oxide Humans General Dentistry Orthodontics Analysis of Variance Crowns business.industry Reproducibility of Results Original Articles Dental Marginal Adaptation Layer thickness Metal ceramic Dental Porcelain Models Dental lcsh:RK1-715 Polyvinyl siloxane Dental Prosthesis Design lcsh:Dentistry Computer-Aided Design business |
| Zdroj: | Journal of Applied Oral Science v.20 n.2 2012 Journal of applied oral science Universidade de São Paulo (USP) instacron:USP Journal of Applied Oral Science Journal of Applied Oral Science, Volume: 20, Issue: 2, Pages: 235-240, Published: APR 2012 Journal of Applied Oral Science, Vol 20, Iss 2, Pp 235-240 (2012) |
| Popis: | OBJECTIVES: The aim of this study was to investigate the internal fit (IF) of glass-infiltrated alumina (ICA - In-Ceram Alumina), yttria-stabilized tetragonal zirconia polycrystals (Y-TZP - IPS e.max ZirCAD), and metal-ceramic (MC - Ni-Cr alloy) crowns. MATERIAL AND METHODS: Sixty standardized resin-tooth replicas of a maxillary first molar were produced for crown placement and divided into 3 groups (n=20 each) according to the core material used (metal, ICA or Y-TZP). The IF of the crowns was measured using the replica technique, which employs a light body polyvinyl siloxane impression material to simulate the cement layer thickness. The data were analyzed according to the surfaces obtained for the occlusal space (OS), axial space (AS) and total mean (TM) using two-way ANOVA with Tukey ’s multiple comparison test (p |
| Databáze: | OpenAIRE |
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