Effect of resin and type of surface treatment on the flexural strength of cracked feldspathic porcelain
| Autor: | Kermanshah Hamid, Alhosseini Seyedeh Narges Ameri, Ghabraei Sholeh, Kharazifard Mohammad Javad |
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| Jazyk: | perština |
| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | Journal of Dental Medicine, Vol 28, Iss 1, Pp 33-41 (2015) |
| Druh dokumentu: | article |
| ISSN: | 1024-641X 2008-2444 |
| Popis: | Background and Aims: Porcelain restorations are often ground for clinical adjustment and this removes the surface glaze layer and introduces flaws that can grow in wet environments due to stress-corrosion, reduce the strength of porcelain and limit restoration lifetime. The aim of this study was to introduce some surface treatment methods to control the flaws of ceramic restorations external surface and improve their strength. Materials and Methods: 40 feldspathic discs were prepared and divided into 4 groups (n=10): not indented (group 1) and others indented by vickers with 29.4 N and received different treatments: no treatment (group 2), polished (group 3) and polished-silane-resin (group 4). Biaxial flexural strength of discs was tested after water storage. Data were analyzed using one-way ANOVA . Results: The mean flexural strength of specimens in group 1 (134.49±12.60), 2 (94.81±15.41), 3 (89.20±16.22) and 4 (80.67±12.01) were measured. Group 1 (not indented) revealed significantly higher strength (P |
| Databáze: | Directory of Open Access Journals |
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