Influence of Prolonged Dental Bleaching on the Adhesive Bond Strength to Enamel Surfaces
The objective of this in vitro study was to assess the influence of prolonged bleaching pre- and postrestoration on the bond strength (microshear) to enamel using 4% hydrogen peroxide (PH4). In the postrestorative bleached specimens evaluation, the composite cylinders were assembled after bleaching,...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | International Journal of Dentistry |
| Online Access: | http://dx.doi.org/10.1155/2020/2609359 |
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| author | Juliana C. P. Baia Roberta P. Oliveira Mara E. S. Ribeiro Rafael R. Lima Sandro C. Loretto Mário H. Silva e Souza Junior |
| author_facet | Juliana C. P. Baia Roberta P. Oliveira Mara E. S. Ribeiro Rafael R. Lima Sandro C. Loretto Mário H. Silva e Souza Junior |
| author_sort | Juliana C. P. Baia |
| collection | DOAJ |
| description | The objective of this in vitro study was to assess the influence of prolonged bleaching pre- and postrestoration on the bond strength (microshear) to enamel using 4% hydrogen peroxide (PH4). In the postrestorative bleached specimens evaluation, the composite cylinders were assembled after bleaching, while in the prebleached specimens, the cylinders were assembled before. Therefore, in the postbleached specimens, 60 bovine teeth were randomly assigned as follows: G1: control; G2: 14 days bleaching before bond strength (BS) testing; G3: 21 days; and G4: 28 days. In prebleached specimens, 180 bovine teeth were randomly assigned as follows: G1: control; G5: 14 days bleaching, storage in artificial saliva (AS) for 24 h before BS testing; G6: 14 days beaching, AS storage for 7 days before BS testing; G7: 21 days bleaching, AS storage for 24 h before BS testing; G8: 21 days bleaching, AS storage for 7 days before BS testing; G9: 28 days bleaching, AS storage for 24 hours before BS testing; and G10 : 28 days bleaching, AS storage for 7 days before BS testing. The results were submitted to ANOVA one-way (postrestoration bleaching) and two-way (prerestoration bleaching) and Tukey’s post hoc test (p≤0.05). In the postrestoration bleaching, no statistical difference between times was found. However, when bleached groups were compared to the control (G1), an expressive difference was detected (p≤0.0001). For prerestoration bleaching, all experimental groups were statistically different from G1 (p≤0.05), except G6 (p≥0.01), and for G5 and G6, statistical differences were found (p≤0.01). There were no significant differences between G7 and G8 and between G9 and G10, regardless of the AS storage times (p≥0.05). It was concluded that prolonged bleaching with PH4 decreased adhesion resistance regardless of the moment of the bleaching (post- and prerestoration bleaching). |
| format | Article |
| id | doaj-art-8df1a029a37141519698180e44fff703 |
| institution | Kabale University |
| issn | 1687-8728 1687-8736 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Dentistry |
| spelling | doaj-art-8df1a029a37141519698180e44fff7032025-02-03T01:05:06ZengWileyInternational Journal of Dentistry1687-87281687-87362020-01-01202010.1155/2020/26093592609359Influence of Prolonged Dental Bleaching on the Adhesive Bond Strength to Enamel SurfacesJuliana C. P. Baia0Roberta P. Oliveira1Mara E. S. Ribeiro2Rafael R. Lima3Sandro C. Loretto4Mário H. Silva e Souza Junior5Department of Restorative Dentistry, UFPA-Federal University of Pará, Belém 66075-110, BrazilDepartment of Restorative Dentistry, UFPA-Federal University of Pará, Belém 66075-110, BrazilDepartment of Restorative Dentistry, UFPA-Federal University of Pará, Belém 66075-110, BrazilLaboratory of Functional and Structural Biology, UFPA-Federal University of Pará, Belém 66075-110, BrazilDepartment of Restorative Dentistry, UFPA-Federal University of Pará, Belém 66075-110, BrazilDepartment of Restorative Dentistry, UFPA-Federal University of Pará, Belém 66075-110, BrazilThe objective of this in vitro study was to assess the influence of prolonged bleaching pre- and postrestoration on the bond strength (microshear) to enamel using 4% hydrogen peroxide (PH4). In the postrestorative bleached specimens evaluation, the composite cylinders were assembled after bleaching, while in the prebleached specimens, the cylinders were assembled before. Therefore, in the postbleached specimens, 60 bovine teeth were randomly assigned as follows: G1: control; G2: 14 days bleaching before bond strength (BS) testing; G3: 21 days; and G4: 28 days. In prebleached specimens, 180 bovine teeth were randomly assigned as follows: G1: control; G5: 14 days bleaching, storage in artificial saliva (AS) for 24 h before BS testing; G6: 14 days beaching, AS storage for 7 days before BS testing; G7: 21 days bleaching, AS storage for 24 h before BS testing; G8: 21 days bleaching, AS storage for 7 days before BS testing; G9: 28 days bleaching, AS storage for 24 hours before BS testing; and G10 : 28 days bleaching, AS storage for 7 days before BS testing. The results were submitted to ANOVA one-way (postrestoration bleaching) and two-way (prerestoration bleaching) and Tukey’s post hoc test (p≤0.05). In the postrestoration bleaching, no statistical difference between times was found. However, when bleached groups were compared to the control (G1), an expressive difference was detected (p≤0.0001). For prerestoration bleaching, all experimental groups were statistically different from G1 (p≤0.05), except G6 (p≥0.01), and for G5 and G6, statistical differences were found (p≤0.01). There were no significant differences between G7 and G8 and between G9 and G10, regardless of the AS storage times (p≥0.05). It was concluded that prolonged bleaching with PH4 decreased adhesion resistance regardless of the moment of the bleaching (post- and prerestoration bleaching).http://dx.doi.org/10.1155/2020/2609359 |
| spellingShingle | Juliana C. P. Baia Roberta P. Oliveira Mara E. S. Ribeiro Rafael R. Lima Sandro C. Loretto Mário H. Silva e Souza Junior Influence of Prolonged Dental Bleaching on the Adhesive Bond Strength to Enamel Surfaces International Journal of Dentistry |
| title | Influence of Prolonged Dental Bleaching on the Adhesive Bond Strength to Enamel Surfaces |
| title_full | Influence of Prolonged Dental Bleaching on the Adhesive Bond Strength to Enamel Surfaces |
| title_fullStr | Influence of Prolonged Dental Bleaching on the Adhesive Bond Strength to Enamel Surfaces |
| title_full_unstemmed | Influence of Prolonged Dental Bleaching on the Adhesive Bond Strength to Enamel Surfaces |
| title_short | Influence of Prolonged Dental Bleaching on the Adhesive Bond Strength to Enamel Surfaces |
| title_sort | influence of prolonged dental bleaching on the adhesive bond strength to enamel surfaces |
| url | http://dx.doi.org/10.1155/2020/2609359 |
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