Comparison between self-etching and conventional primers in repeated bracket bonding
Background and Aim: This study aimed to evaluate the effect of repeated bonding by self-etching primers (SEPs) and a conventional phosphoric acid-etchant on shear bond strength (SBS), adhesive remnant index (ARI), and enamel morphology at different debonding time points. Materials and Methods: In th...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Islamic Azad University
2017-10-01
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| Series: | Journal of Research in Dental and Maxillofacial Sciences |
| Subjects: | |
| Online Access: | http://jrdms.dentaliau.ac.ir/browse.php?a_code=A-10-597-1&slc_lang=en&sid=1 |
| _version_ | 1818042394271023104 |
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| author | B Khosravani fard A Fetrati E Asadi |
| author_facet | B Khosravani fard A Fetrati E Asadi |
| author_sort | B Khosravani fard |
| collection | DOAJ |
| description | Background and Aim: This study aimed to evaluate the effect of repeated bonding by self-etching primers (SEPs) and a conventional phosphoric acid-etchant on shear bond strength (SBS), adhesive remnant index (ARI), and enamel morphology at different debonding time points.
Materials and Methods: In this experimental study, 120 premolars were randomly divided into six groups of 20. In the first three groups, the brackets were bonded by Transbond XT, Transbond Plus, and Beauty Ortho Bond, and were debonded after 30 minutes. Adhesive remnants were removed from the enamel surface by a tungsten carbide bur. Rebonding was done with new brackets as described. The remaining three groups were debonded after aging. The SBS, ARI, and enamel surface morphology were evaluated. The SBS data were analyzed by two-way analysis of variance (ANOVA). The ARI scores were compared by using Mann-U-Whitney and Kruskal-Wallis tests.
Results: The SBS of Transbond XT in the first debonding was significantly higher than that of Transbond Plus. Transbond Plus showed a higher SBS than Beauty Ortho Bond. In the second debonding, the SBS values of Transbond XT and Transbond Plus were not significantly different, but their SBS values were significantly higher than that of Beauty Ortho Bond. SEPs showed a higher bond strength in the second bonding compared to the first bonding. Scanning electron microscopy (SEM) showed more porosity in the enamel surface before the second bonding compared to the first bonding. The SBS of Beauty Ortho Bond significantly decreased after aging, and SEM images showed a gap at the resin-enamel interface.
Conclusion: SEPs are recommended for secondary bonding in the clinical setting due to a decreased chair time, less damage to enamel, and an adequate bond strength. |
| first_indexed | 2024-12-10T08:45:37Z |
| format | Article |
| id | doaj.art-d02e5355c59f4a7ab97dab9c7e3c7b2e |
| institution | Directory Open Access Journal |
| issn | 2383-2754 |
| language | English |
| last_indexed | 2024-12-10T08:45:37Z |
| publishDate | 2017-10-01 |
| publisher | Islamic Azad University |
| record_format | Article |
| series | Journal of Research in Dental and Maxillofacial Sciences |
| spelling | doaj.art-d02e5355c59f4a7ab97dab9c7e3c7b2e2022-12-22T01:55:45ZengIslamic Azad UniversityJournal of Research in Dental and Maxillofacial Sciences2383-27542017-10-01242032Comparison between self-etching and conventional primers in repeated bracket bondingB Khosravani fard0A Fetrati1E Asadi2 associate professor of Islamic azad dental university,Orthodontic department Dr Works in her Private Office , Department of Orthodontics, Dental Branch of Tehran, Islamic Azad University, Tehran, Iran Background and Aim: This study aimed to evaluate the effect of repeated bonding by self-etching primers (SEPs) and a conventional phosphoric acid-etchant on shear bond strength (SBS), adhesive remnant index (ARI), and enamel morphology at different debonding time points. Materials and Methods: In this experimental study, 120 premolars were randomly divided into six groups of 20. In the first three groups, the brackets were bonded by Transbond XT, Transbond Plus, and Beauty Ortho Bond, and were debonded after 30 minutes. Adhesive remnants were removed from the enamel surface by a tungsten carbide bur. Rebonding was done with new brackets as described. The remaining three groups were debonded after aging. The SBS, ARI, and enamel surface morphology were evaluated. The SBS data were analyzed by two-way analysis of variance (ANOVA). The ARI scores were compared by using Mann-U-Whitney and Kruskal-Wallis tests. Results: The SBS of Transbond XT in the first debonding was significantly higher than that of Transbond Plus. Transbond Plus showed a higher SBS than Beauty Ortho Bond. In the second debonding, the SBS values of Transbond XT and Transbond Plus were not significantly different, but their SBS values were significantly higher than that of Beauty Ortho Bond. SEPs showed a higher bond strength in the second bonding compared to the first bonding. Scanning electron microscopy (SEM) showed more porosity in the enamel surface before the second bonding compared to the first bonding. The SBS of Beauty Ortho Bond significantly decreased after aging, and SEM images showed a gap at the resin-enamel interface. Conclusion: SEPs are recommended for secondary bonding in the clinical setting due to a decreased chair time, less damage to enamel, and an adequate bond strength.http://jrdms.dentaliau.ac.ir/browse.php?a_code=A-10-597-1&slc_lang=en&sid=1Dental BondingOrthodontic BracketsSelf-Etch AdhesiveAging |
| spellingShingle | B Khosravani fard A Fetrati E Asadi Comparison between self-etching and conventional primers in repeated bracket bonding Journal of Research in Dental and Maxillofacial Sciences Dental Bonding Orthodontic Brackets Self-Etch Adhesive Aging |
| title | Comparison between self-etching and conventional primers in repeated bracket bonding |
| title_full | Comparison between self-etching and conventional primers in repeated bracket bonding |
| title_fullStr | Comparison between self-etching and conventional primers in repeated bracket bonding |
| title_full_unstemmed | Comparison between self-etching and conventional primers in repeated bracket bonding |
| title_short | Comparison between self-etching and conventional primers in repeated bracket bonding |
| title_sort | comparison between self etching and conventional primers in repeated bracket bonding |
| topic | Dental Bonding Orthodontic Brackets Self-Etch Adhesive Aging |
| url | http://jrdms.dentaliau.ac.ir/browse.php?a_code=A-10-597-1&slc_lang=en&sid=1 |
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