Comparison of the resin cement bond strength to an indirect composites treated by Er;YAG laser and sandblast
Background and Aims: Indirect composites are designed to overcome the shortcomings of direct composites such as polymerization shrinkage and low degree of conversion. But, good adhesion of resin cements to indirect composites is still difficult. This research was designed to assess the effect of dif...
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| Format: | Article |
| Language: | fas |
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Tehran University of Medical Sciences
2014-04-01
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| Series: | Journal of Dental Medicine |
| Subjects: | |
| Online Access: | http://jdm.tums.ac.ir/browse.php?a_code=A-10-25-736&slc_lang=en&sid=1 |
| _version_ | 1811283544785289216 |
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| author | Mansure Mirzaee Esmaeel Yassini Sima Shahabi Nasim Chiniforoush Naznin Zeinab Garshasbzade |
| author_facet | Mansure Mirzaee Esmaeel Yassini Sima Shahabi Nasim Chiniforoush Naznin Zeinab Garshasbzade |
| author_sort | Mansure Mirzaee |
| collection | DOAJ |
| description | Background and Aims: Indirect composites are designed to overcome the shortcomings of direct composites such as polymerization shrinkage and low degree of conversion. But, good adhesion of resin cements to indirect composites is still difficult. This research was designed to assess the effect of different powers of Er;YAG laser compared with sandblasting. On the micro tensil bond strength of resin cement to indirect composites. Materials and Methods: Specimens were prepred using dental resin composite (Gradia GC) and metallic mold (15×5×5 mm) and were cured according to the manufacturer’s instructions. 24 blocks were prepared and randomly divided into 12 groups. G1:no treatment (as control), G 2-6: Er; YAG laser irradiation (2, 3, 4, 5, 6 Watt), G7: sandblast. Two composite blocks were bonded to each other with Panavia F.2. resin cement. The cylindrical sections with dimensions of 1 mm were tested in a microtensile bond strength tester device using 0.5 mm/min speed until fracture points. Data were analyzed using 2-way ANOVA and T-test. Results: Interaction between lasers irradiation and sandblast treatments were significant (P<0.05). Thus, T-test was used for comparing laser groups. T-test showed that when using laser with energies less than 150 mJ, there was no significant difference (P>0.05) whether samples were sandblasted or not. Samples which received 300 mJ of laser showed lower bond strength compared with no laser treatment. Other groups showed no significant difference (P>0.05). Conclusion: It seems that application of sandblast with proper variables, is a good way to improve bond strength.Laser application had no influence in improving the bond strength between the indirect composite and resin cement. |
| first_indexed | 2024-04-13T02:13:22Z |
| format | Article |
| id | doaj.art-288e41431ef5474abdb68b93682666c2 |
| institution | Directory Open Access Journal |
| issn | 1024-641X 2008-2444 |
| language | fas |
| last_indexed | 2024-04-13T02:13:22Z |
| publishDate | 2014-04-01 |
| publisher | Tehran University of Medical Sciences |
| record_format | Article |
| series | Journal of Dental Medicine |
| spelling | doaj.art-288e41431ef5474abdb68b93682666c22022-12-22T03:07:13ZfasTehran University of Medical SciencesJournal of Dental Medicine1024-641X2008-24442014-04-012713136Comparison of the resin cement bond strength to an indirect composites treated by Er;YAG laser and sandblastMansure Mirzaee0Esmaeel Yassini1Sima Shahabi2Nasim Chiniforoush3Naznin Zeinab Garshasbzade4 Background and Aims: Indirect composites are designed to overcome the shortcomings of direct composites such as polymerization shrinkage and low degree of conversion. But, good adhesion of resin cements to indirect composites is still difficult. This research was designed to assess the effect of different powers of Er;YAG laser compared with sandblasting. On the micro tensil bond strength of resin cement to indirect composites. Materials and Methods: Specimens were prepred using dental resin composite (Gradia GC) and metallic mold (15×5×5 mm) and were cured according to the manufacturer’s instructions. 24 blocks were prepared and randomly divided into 12 groups. G1:no treatment (as control), G 2-6: Er; YAG laser irradiation (2, 3, 4, 5, 6 Watt), G7: sandblast. Two composite blocks were bonded to each other with Panavia F.2. resin cement. The cylindrical sections with dimensions of 1 mm were tested in a microtensile bond strength tester device using 0.5 mm/min speed until fracture points. Data were analyzed using 2-way ANOVA and T-test. Results: Interaction between lasers irradiation and sandblast treatments were significant (P<0.05). Thus, T-test was used for comparing laser groups. T-test showed that when using laser with energies less than 150 mJ, there was no significant difference (P>0.05) whether samples were sandblasted or not. Samples which received 300 mJ of laser showed lower bond strength compared with no laser treatment. Other groups showed no significant difference (P>0.05). Conclusion: It seems that application of sandblast with proper variables, is a good way to improve bond strength.Laser application had no influence in improving the bond strength between the indirect composite and resin cement.http://jdm.tums.ac.ir/browse.php?a_code=A-10-25-736&slc_lang=en&sid=1Indirect composite ErYAG laser Bond strength |
| spellingShingle | Mansure Mirzaee Esmaeel Yassini Sima Shahabi Nasim Chiniforoush Naznin Zeinab Garshasbzade Comparison of the resin cement bond strength to an indirect composites treated by Er;YAG laser and sandblast Journal of Dental Medicine Indirect composite Er YAG laser Bond strength |
| title | Comparison of the resin cement bond strength to an indirect composites treated by Er;YAG laser and sandblast |
| title_full | Comparison of the resin cement bond strength to an indirect composites treated by Er;YAG laser and sandblast |
| title_fullStr | Comparison of the resin cement bond strength to an indirect composites treated by Er;YAG laser and sandblast |
| title_full_unstemmed | Comparison of the resin cement bond strength to an indirect composites treated by Er;YAG laser and sandblast |
| title_short | Comparison of the resin cement bond strength to an indirect composites treated by Er;YAG laser and sandblast |
| title_sort | comparison of the resin cement bond strength to an indirect composites treated by er yag laser and sandblast |
| topic | Indirect composite Er YAG laser Bond strength |
| url | http://jdm.tums.ac.ir/browse.php?a_code=A-10-25-736&slc_lang=en&sid=1 |
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