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Effect of peroxide bleaching on the biaxial flexural strength and modulus of bovine dentin
| Content Provider | Scilit |
|---|---|
| Author | Carvalho, Adriana Oliveira Ayres, Ana Paula Almeida de Almeida, Letícia Cunha Amaral Gonzaga Briso, André Luiz Fraga Rueggeberg, Frederick Allen Giannini, Marcelo |
| Copyright Year | 2015 |
| Description | Objective: This study evaluated the effects of carbamide peroxide and hydrogen peroxide on the biaxial flexural strength and flexural modulus of bovine dentin. Materials and Methods: Thirty coronal dentin disks (0.5 mm thick × 6.0 mm diameter) were prepared from bovine teeth. The disks were randomly divided into three groups (n=10): A control group (unbleached), a group bleached with 10% carbamide peroxide (8 h at 37°C), and a group bleached with 38% hydrogen peroxide (three 10 min applications at 37°C). The specimens were tested in a biaxial flexural apparatus held in a universal testing machine at 1.27 mm/min until failure occurred, and the biaxial mechanical properties were calculated. For each test parameter, the data were statistically analyzed by Fisher's PLSD test (predetermined ⍺ = 0.05). Results: The group bleached with 38% hydrogen peroxide demonstrated significantly lower flexural strength than the unbleached control group. Hydrogen peroxide treatment resulted in a significantly lower flexural modulus compared with the control group and with carbamide peroxide bleaching. Conclusion: Exposure of dentin to hydrogen peroxide significantly reduced both the flexural strength and the flexural modulus compared with the no-treatment control, whereas exposure to carbamide peroxide did not significantly affect either parameter. |
| Related Links | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4439854/pdf http://www.thieme-connect.de/products/ejournals/pdf/10.4103/1305-7456.156845.pdf |
| Ending Page | 250 |
| Page Count | 5 |
| Starting Page | 246 |
| ISSN | 13057456 |
| DOI | 10.4103/1305-7456.156845 |
| Journal | European Journal of Dentistry |
| Issue Number | 02 |
| Volume Number | 09 |
| Language | English |
| Publisher | Georg Thieme Verlag KG |
| Publisher Date | 2015-04-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: European Journal of Dentistry Microscopic Research Biaxial Flexural Strength Carbamide Peroxide Flexural Modulus Hydrogen Peroxide |
| Content Type | Text |
| Resource Type | Article |
| Subject | Dentistry |
