IADR Abstract Archives
Impact Strength of Temporary Crown Materials After Brushing with Toothpaste
Objectives: The purposes of this experiment are to know and compare the impact strength of artificial crown materials PMMA and bis-GMA composite resin after brushing with toothpaste.
Methods: In this experiment, N=12 plates samples made out of PMMA and bis-GMA composite resin each with the size of 60mm x 10mm x 1,5mm and divided randomly into two groups for each materials, so each groups consist of 6 samples. The groups consist of control groups and treatment groups. All groups were submersed in distilled water for 24 hours in 37°C then the control groups were brushed without toothpaste while the treatment groups were brushed with toothpaste. The brushing time was 2 minutes. To determine the difference of the impact strength, all samples were tested using Mini Impact Tester Type KRY with Charpy method. The measurement results were analyzed statistically using One Way ANOVA.
Results: There are significant differences between groups but the decay of PMMA’s impact strength is more significant than bis-GMA composite resin’s.
Conclusions: The impact strength of artificial crown materials bis-GMA composite resin is higher than PMMA’s after brushing with toothpaste.
Methods: In this experiment, N=12 plates samples made out of PMMA and bis-GMA composite resin each with the size of 60mm x 10mm x 1,5mm and divided randomly into two groups for each materials, so each groups consist of 6 samples. The groups consist of control groups and treatment groups. All groups were submersed in distilled water for 24 hours in 37°C then the control groups were brushed without toothpaste while the treatment groups were brushed with toothpaste. The brushing time was 2 minutes. To determine the difference of the impact strength, all samples were tested using Mini Impact Tester Type KRY with Charpy method. The measurement results were analyzed statistically using One Way ANOVA.
Results: There are significant differences between groups but the decay of PMMA’s impact strength is more significant than bis-GMA composite resin’s.
Conclusions: The impact strength of artificial crown materials bis-GMA composite resin is higher than PMMA’s after brushing with toothpaste.