In vitro effects of different preparation techniques on shear bond strength of direct composite resin to indirect composite resin
AbstractIntroduction: Sometimes repair of indirect composite restorations is preferable to replacement. The aim of this study was to investigate the effect of different surface preparations of indirect composite resin restoration on the shear bond strength of direct composite resin to it.Materials a...
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| Format: | Article |
| Language: | fas |
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Isfahan University of Medical Sciences
2013-01-01
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| Series: | مجله دانشکده دندانپزشکی اصفهان |
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| Online Access: | http://www.jids.mui.ac.ir/index.php/jids/article/view/392 |
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| author | Naghmeh Gharizadeh Azita Kaviani Babak Sheini Pour |
| author_facet | Naghmeh Gharizadeh Azita Kaviani Babak Sheini Pour |
| author_sort | Naghmeh Gharizadeh |
| collection | DOAJ |
| description | AbstractIntroduction: Sometimes repair of indirect composite restorations is preferable to replacement. The aim of this study was to investigate the effect of different surface preparations of indirect composite resin restoration on the shear bond strength of direct composite resin to it.Materials and Methods: In this in vitro study eighty blocks of indirect composite resin were manufactured and randomly assigned to different surface treatment groups (n = 20): control group (CG), no surface preparation; group 2, sandblasting with alumina particles (SBG); group 3, acid etching with 9.5% hydrofluoric acid (HA); and group 4, acid etching with 37% phosphoric acid (PAG). The blocks were restored with direct composite resin and stored in an incubator for 24 hours after thermocycling (500 cycles at 5/55 ± 2°C). The specimens (n = 80) underwent fracture tests in an Instron instrument. Data were analyzed using one-way ANOVA and Tukey test (α = 0.05).Results: The highest shear bond strength values with a mean of 25.93 MPa were recorded in group 3 (p value < 0.001). The lowest shear bond strength values were recorded in groups 1 and 2 with 11.00 ± 1.83 and 12.54 ± 2.47 MPa, respectively (p value = 0.097). There were significant differences between all the groups except for groups 1 and 2 (p value ≤ 0.001).Conclusion: Based on the results, surface treatment technique influences the shear bond strength of indirect composite resin to direct composite resin and the best technique is etching with hydrofluoric acid. Key words: Composite resins, Hydrofluoric acid, Sandblasting, Shear bond strength |
| first_indexed | 2024-03-12T10:11:38Z |
| format | Article |
| id | doaj.art-6a6587c2ba6d4fafb8d140c5898ce062 |
| institution | Directory Open Access Journal |
| issn | 1735-255X 2008-6989 |
| language | fas |
| last_indexed | 2024-03-12T10:11:38Z |
| publishDate | 2013-01-01 |
| publisher | Isfahan University of Medical Sciences |
| record_format | Article |
| series | مجله دانشکده دندانپزشکی اصفهان |
| spelling | doaj.art-6a6587c2ba6d4fafb8d140c5898ce0622023-09-02T10:51:30ZfasIsfahan University of Medical Sciencesمجله دانشکده دندانپزشکی اصفهان1735-255X2008-69892013-01-0186522529In vitro effects of different preparation techniques on shear bond strength of direct composite resin to indirect composite resinNaghmeh GharizadehAzita KavianiBabak Sheini PourAbstractIntroduction: Sometimes repair of indirect composite restorations is preferable to replacement. The aim of this study was to investigate the effect of different surface preparations of indirect composite resin restoration on the shear bond strength of direct composite resin to it.Materials and Methods: In this in vitro study eighty blocks of indirect composite resin were manufactured and randomly assigned to different surface treatment groups (n = 20): control group (CG), no surface preparation; group 2, sandblasting with alumina particles (SBG); group 3, acid etching with 9.5% hydrofluoric acid (HA); and group 4, acid etching with 37% phosphoric acid (PAG). The blocks were restored with direct composite resin and stored in an incubator for 24 hours after thermocycling (500 cycles at 5/55 ± 2°C). The specimens (n = 80) underwent fracture tests in an Instron instrument. Data were analyzed using one-way ANOVA and Tukey test (α = 0.05).Results: The highest shear bond strength values with a mean of 25.93 MPa were recorded in group 3 (p value < 0.001). The lowest shear bond strength values were recorded in groups 1 and 2 with 11.00 ± 1.83 and 12.54 ± 2.47 MPa, respectively (p value = 0.097). There were significant differences between all the groups except for groups 1 and 2 (p value ≤ 0.001).Conclusion: Based on the results, surface treatment technique influences the shear bond strength of indirect composite resin to direct composite resin and the best technique is etching with hydrofluoric acid. Key words: Composite resins, Hydrofluoric acid, Sandblasting, Shear bond strengthhttp://www.jids.mui.ac.ir/index.php/jids/article/view/392Composite resinsHydrofluoric acidSandblastingShear bond strength |
| spellingShingle | Naghmeh Gharizadeh Azita Kaviani Babak Sheini Pour In vitro effects of different preparation techniques on shear bond strength of direct composite resin to indirect composite resin مجله دانشکده دندانپزشکی اصفهان Composite resins Hydrofluoric acid Sandblasting Shear bond strength |
| title | In vitro effects of different preparation techniques on shear bond strength of direct composite resin to indirect composite resin |
| title_full | In vitro effects of different preparation techniques on shear bond strength of direct composite resin to indirect composite resin |
| title_fullStr | In vitro effects of different preparation techniques on shear bond strength of direct composite resin to indirect composite resin |
| title_full_unstemmed | In vitro effects of different preparation techniques on shear bond strength of direct composite resin to indirect composite resin |
| title_short | In vitro effects of different preparation techniques on shear bond strength of direct composite resin to indirect composite resin |
| title_sort | in vitro effects of different preparation techniques on shear bond strength of direct composite resin to indirect composite resin |
| topic | Composite resins Hydrofluoric acid Sandblasting Shear bond strength |
| url | http://www.jids.mui.ac.ir/index.php/jids/article/view/392 |
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