Evaluation of the influence of dental bleaching with 35% hydrogen peroxide in orthodontic bracket shear bond strength
OBJECTIVE: The purpose of this study was to evaluate, in vitro, the bond strength of brackets bonded to premolars previously subjected to bleaching with a 35% hydrogen peroxide. METHODS: Twenty one healthy premolars were selected and randomly divided into three groups (n = 7). Group I (G1) included...
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| Format: | Article |
| Language: | English |
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Dental Press Editora
2013-04-01
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| Series: | Dental Press Journal of Orthodontics |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2176-94512013000200020&lng=en&tlng=en |
| _version_ | 1818751894630170624 |
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| author | Marcus Vinicius Neiva Nunes do Rego Roanselli Marllon Lima dos Santos Leanne Matias Portela Leal Carlos Gustavo Silva Braga |
| author_facet | Marcus Vinicius Neiva Nunes do Rego Roanselli Marllon Lima dos Santos Leanne Matias Portela Leal Carlos Gustavo Silva Braga |
| author_sort | Marcus Vinicius Neiva Nunes do Rego |
| collection | DOAJ |
| description | OBJECTIVE: The purpose of this study was to evaluate, in vitro, the bond strength of brackets bonded to premolars previously subjected to bleaching with a 35% hydrogen peroxide. METHODS: Twenty one healthy premolars were selected and randomly divided into three groups (n = 7). Group I (G1) included teeth that were not submitted to bleaching. The enamel surfaces of Groups II (G2) and III (G3) were submitted to a bleaching process with 35% hydrogen peroxide (Whiteness HP Maxx). On Group II (G2), after bleaching, the teeth were stored for 24 hours in distilled water at 98.6 ºF, and then, premolar metallic brackets were bonded using Transbond XT (3M) resin. Group III (G3) was submitted to the same procedure seven days after bleaching. After bonding, all teeth were stored in distilled water at 98.6 ºF for 24 hours. All groups were submitted to a traction test using an EMIC DL2000 universal testing machine at a speed of 0.5 mm/min. RESULTS AND CONCLUSION: The bracket resistance to debonding was compared between the groups by the Kruskal-Wallis nonparametric test (p < 0.05) and it was verified that the bleaching agent significantly reduced bracket adhesion when bonded 24 hours after bleaching. However, seven days after bleaching, there was no significant difference on the resistance to debonding among groups G1 (19,52 kgf) and G3 (18,44 kgf), meaning that it is necessary to wait longer after bleaching to bond brackets. |
| first_indexed | 2024-12-18T04:42:49Z |
| format | Article |
| id | doaj.art-67db15dd178748c89ab302b9a0ab27d9 |
| institution | Directory Open Access Journal |
| issn | 2177-6709 |
| language | English |
| last_indexed | 2024-12-18T04:42:49Z |
| publishDate | 2013-04-01 |
| publisher | Dental Press Editora |
| record_format | Article |
| series | Dental Press Journal of Orthodontics |
| spelling | doaj.art-67db15dd178748c89ab302b9a0ab27d92022-12-21T21:20:41ZengDental Press EditoraDental Press Journal of Orthodontics2177-67092013-04-011829510010.1590/S2176-94512013000200020S2176-94512013000200020Evaluation of the influence of dental bleaching with 35% hydrogen peroxide in orthodontic bracket shear bond strengthMarcus Vinicius Neiva Nunes do Rego0Roanselli Marllon Lima dos Santos1Leanne Matias Portela Leal2Carlos Gustavo Silva Braga3Centro Universitário UninovafapiCentro Universitário UninovafapiCentro Universitário UninovafapiCentro Universitário UninovafapiOBJECTIVE: The purpose of this study was to evaluate, in vitro, the bond strength of brackets bonded to premolars previously subjected to bleaching with a 35% hydrogen peroxide. METHODS: Twenty one healthy premolars were selected and randomly divided into three groups (n = 7). Group I (G1) included teeth that were not submitted to bleaching. The enamel surfaces of Groups II (G2) and III (G3) were submitted to a bleaching process with 35% hydrogen peroxide (Whiteness HP Maxx). On Group II (G2), after bleaching, the teeth were stored for 24 hours in distilled water at 98.6 ºF, and then, premolar metallic brackets were bonded using Transbond XT (3M) resin. Group III (G3) was submitted to the same procedure seven days after bleaching. After bonding, all teeth were stored in distilled water at 98.6 ºF for 24 hours. All groups were submitted to a traction test using an EMIC DL2000 universal testing machine at a speed of 0.5 mm/min. RESULTS AND CONCLUSION: The bracket resistance to debonding was compared between the groups by the Kruskal-Wallis nonparametric test (p < 0.05) and it was verified that the bleaching agent significantly reduced bracket adhesion when bonded 24 hours after bleaching. However, seven days after bleaching, there was no significant difference on the resistance to debonding among groups G1 (19,52 kgf) and G3 (18,44 kgf), meaning that it is necessary to wait longer after bleaching to bond brackets.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2176-94512013000200020&lng=en&tlng=enBraquetes ortodônticosClareamento dentárioResistência à tração |
| spellingShingle | Marcus Vinicius Neiva Nunes do Rego Roanselli Marllon Lima dos Santos Leanne Matias Portela Leal Carlos Gustavo Silva Braga Evaluation of the influence of dental bleaching with 35% hydrogen peroxide in orthodontic bracket shear bond strength Dental Press Journal of Orthodontics Braquetes ortodônticos Clareamento dentário Resistência à tração |
| title | Evaluation of the influence of dental bleaching with 35% hydrogen peroxide in orthodontic bracket shear bond strength |
| title_full | Evaluation of the influence of dental bleaching with 35% hydrogen peroxide in orthodontic bracket shear bond strength |
| title_fullStr | Evaluation of the influence of dental bleaching with 35% hydrogen peroxide in orthodontic bracket shear bond strength |
| title_full_unstemmed | Evaluation of the influence of dental bleaching with 35% hydrogen peroxide in orthodontic bracket shear bond strength |
| title_short | Evaluation of the influence of dental bleaching with 35% hydrogen peroxide in orthodontic bracket shear bond strength |
| title_sort | evaluation of the influence of dental bleaching with 35 hydrogen peroxide in orthodontic bracket shear bond strength |
| topic | Braquetes ortodônticos Clareamento dentário Resistência à tração |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2176-94512013000200020&lng=en&tlng=en |
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