Effect of the Simulated Disinfection by Microwave Energy on the Impact Strength of the Tooth/Acrylic Resin Adhesion
| Autor: | Marcelo Ferraz Mesquita, Rafael Leonardo Xediek Consani, Simonides Consani, Marinaldo Henrique Zampieri, Wilson Batista Mendes |
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| Rok vydání: | 2008 |
| Předmět: |
Abrasion (dental)
Molar Wax Materials science business.industry Microwave oven Charpy impact test tooth/acrylic resin adhesion Dentistry Izod impact strength test medicine.disease Article Laboratory flask stomatognathic system Microwave disinfection visual_art visual_art.visual_art_medium medicine impact strength Composite material glossy ridge lap retention business General Dentistry Acrylic resin |
| Zdroj: | The Open Dentistry Journal |
| ISSN: | 1874-2106 |
| DOI: | 10.2174/1874210600802010013 |
| Popis: | The objective of this study was to determine the effect of simulated microwave disinfection on the tooth/acrylic resin impact strength. Acrylic molar teeth with a wax stick attached to the ridge lap were included in brass flasks. Specimens were made with Classico thermopolymerized acrylic resin, according to the groups: 1 and 5 - tooth with no treatment (control); 2 and 6 – tooth bur abrasion; 3 and 7 – tooth bur retention; and 4 and 8 – tooth monomer etch. Eighty specimens (n=10) were polymerized in bath cycle at 74ºC for 9 hours and deflasked after flask cooling. Specimen from groups 2, 4, 6 and 8 was submitted to simulated microwave disinfection in a microwave oven at 650W for 3 minutes. Impact strength test was performed with an Otto Wolpert-Werke machine (Charpy system) with an impact load of 40 kpcm. Fracture load value was transformed into impact strength as a function of the bond area (kfg/cm2). Collected data were submitted to ANOVA and Tukey’s test (α=.05) and results indicate that the simulated microwave disinfection decreased the impact strength in all treatments. |
| Databáze: | OpenAIRE |
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