Effect of desensitizer application on shear bond strength of composite resin to bleached enamel
Objective: Tooth sensitivity is common after vital tooth bleaching. The aim of this study is to evaluate the effect of a desensitizing agent on shear bond strength of composite resin to bleached enamel; and determine whether a delay of one or two weeks in bonding procedure is sufficient subsequent t...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Wolters Kluwer Medknow Publications
2013-01-01
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| Series: | Indian Journal of Dental Research |
| Subjects: | |
| Online Access: | http://www.ijdr.in/article.asp?issn=0970-9290;year=2013;volume=24;issue=1;spage=87;epage=92;aulast=Khoroushi |
| _version_ | 1818440832130220032 |
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| author | Maryam Khoroushi Ali Ghazalgoo |
| author_facet | Maryam Khoroushi Ali Ghazalgoo |
| author_sort | Maryam Khoroushi |
| collection | DOAJ |
| description | Objective: Tooth sensitivity is common after vital tooth bleaching. The aim of this study is to evaluate the effect of a desensitizing agent on shear bond strength of composite resin to bleached enamel; and determine whether a delay of one or two weeks in bonding procedure is sufficient subsequent to bleaching/desensitizer regimen.
Materials and Methods: Buccal enamel surfaces of ninety-six human sound molars were prepared and divided into eight groups. The surfaces of specimens in Group 1 as negative control group were bonded by composite resin using the single bond adhesive. Specimens in Groups 2-4 were bleached with an at-home bleaching agent (Daywhite ACP). Relief ACP desensitizing gel alone was applied in Group 5. In Groups 6-8, specimens were bleached same as in Group 2 and relief ACP desensitizing gel was applied same as inGroup 5 subsequent to each bleaching session. Composite cylinders were bonded after 24 h, 7 days and 14 days in Groups 2-4, respectively, and also in Groups 6-8, respectively. The shear bond strengths of the cylinders were tested and data was analyzed using two-way ANOVA and Tukey test (α = 0.05).
Results: The results showed that bleaching and bleaching/desensitizer regimens significantly reduced the bond strength of composite resin to enamel. However, desensitizer alone did not reduce bond strength. No statistically significant differences were found between bleaching and bleaching/desensitizer regarding bond strength.
Conclusion: Bleaching or bleaching/desensitizer treatment significantly decreases bond strength of composite resin to enamel. In both regimens, adhesive bonding is recommended after two weeks. |
| first_indexed | 2024-12-14T18:18:37Z |
| format | Article |
| id | doaj.art-8b9a5ff96f5742858f506bcddd0ab2bf |
| institution | Directory Open Access Journal |
| issn | 0970-9290 1998-3603 |
| language | English |
| last_indexed | 2024-12-14T18:18:37Z |
| publishDate | 2013-01-01 |
| publisher | Wolters Kluwer Medknow Publications |
| record_format | Article |
| series | Indian Journal of Dental Research |
| spelling | doaj.art-8b9a5ff96f5742858f506bcddd0ab2bf2022-12-21T22:52:07ZengWolters Kluwer Medknow PublicationsIndian Journal of Dental Research0970-92901998-36032013-01-01241879210.4103/0970-9290.114961Effect of desensitizer application on shear bond strength of composite resin to bleached enamelMaryam KhoroushiAli GhazalgooObjective: Tooth sensitivity is common after vital tooth bleaching. The aim of this study is to evaluate the effect of a desensitizing agent on shear bond strength of composite resin to bleached enamel; and determine whether a delay of one or two weeks in bonding procedure is sufficient subsequent to bleaching/desensitizer regimen. Materials and Methods: Buccal enamel surfaces of ninety-six human sound molars were prepared and divided into eight groups. The surfaces of specimens in Group 1 as negative control group were bonded by composite resin using the single bond adhesive. Specimens in Groups 2-4 were bleached with an at-home bleaching agent (Daywhite ACP). Relief ACP desensitizing gel alone was applied in Group 5. In Groups 6-8, specimens were bleached same as in Group 2 and relief ACP desensitizing gel was applied same as inGroup 5 subsequent to each bleaching session. Composite cylinders were bonded after 24 h, 7 days and 14 days in Groups 2-4, respectively, and also in Groups 6-8, respectively. The shear bond strengths of the cylinders were tested and data was analyzed using two-way ANOVA and Tukey test (α = 0.05). Results: The results showed that bleaching and bleaching/desensitizer regimens significantly reduced the bond strength of composite resin to enamel. However, desensitizer alone did not reduce bond strength. No statistically significant differences were found between bleaching and bleaching/desensitizer regarding bond strength. Conclusion: Bleaching or bleaching/desensitizer treatment significantly decreases bond strength of composite resin to enamel. In both regimens, adhesive bonding is recommended after two weeks.http://www.ijdr.in/article.asp?issn=0970-9290;year=2013;volume=24;issue=1;spage=87;epage=92;aulast=KhoroushiBleachingbond strengthdesensitizerenamelsensitivity |
| spellingShingle | Maryam Khoroushi Ali Ghazalgoo Effect of desensitizer application on shear bond strength of composite resin to bleached enamel Indian Journal of Dental Research Bleaching bond strength desensitizer enamel sensitivity |
| title | Effect of desensitizer application on shear bond strength of composite resin to bleached enamel |
| title_full | Effect of desensitizer application on shear bond strength of composite resin to bleached enamel |
| title_fullStr | Effect of desensitizer application on shear bond strength of composite resin to bleached enamel |
| title_full_unstemmed | Effect of desensitizer application on shear bond strength of composite resin to bleached enamel |
| title_short | Effect of desensitizer application on shear bond strength of composite resin to bleached enamel |
| title_sort | effect of desensitizer application on shear bond strength of composite resin to bleached enamel |
| topic | Bleaching bond strength desensitizer enamel sensitivity |
| url | http://www.ijdr.in/article.asp?issn=0970-9290;year=2013;volume=24;issue=1;spage=87;epage=92;aulast=Khoroushi |
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