The effect of magnesium oxide supplementation to aluminum oxide slip on the jointing of aluminum oxide bars
| Autor: | Yohsuke Taira, Tetsurou Odatsu, Takanobu Shiraishi, Mitsuru Atsuta, Takashi Sawase, Kohji Kamada |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2008 |
| Předmět: |
Dental Stress Analysis
musculoskeletal diseases Hot Temperature Materials science Scanning electron microscope chemistry.chemical_element Sintering Slip (materials science) magnesium oxide aluminum oxide Fracture toughness Flexural strength jointing Hardness Materials Testing Composite material Pliability General Dentistry Aluminum oxide Magnesium Microporous material equipment and supplies Dental Porcelain chemistry Metallurgy Ceramics and Composites |
| Zdroj: | Dental Materials Journal. 27(2):251-257 |
| ISSN: | 0287-4547 |
| Popis: | The purpose of this study was to investigate the effect of modifying aluminum oxide slips with magnesium oxide (MgO) to create a jointing material for In-CeramR Alumina. Jointed In-CeramR Alumina bars with In-CeramR Alumina slips containing 0－1.0 mass％ MgO were examined by a three-point bending test. Joint-free bars were also tested as controls. Fracture surfaces were evaluated by scanning electron microscopy. In addition, linear shrinkage and fracture toughness were assessed. The 0.3 mass％ MgO group showed the highest flexural strength among the jointed groups, and there were no statistical differences between the joint-free control groups. The fracture surface of 0.3 mass％ MgO group showed increased sintering densification with reduced micropore size. No linear shrinkage was observed with the addition of MgO to the alumina slip. Added MgO was also effective in boosting fracture toughness. The present findings indicate that the MgOsupplemented binding material is useful for clinical applications. Dental Materials Journal, 27(2), pp.251-257; 2008 |
| Databáze: | OpenAIRE |
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