Publicação
The effect of different reconditioning methods on bond strength of rebonded brackets : an in-vitro study
| datacite.subject.fos | Ciências Médicas | |
| datacite.subject.sdg | 03:Saúde de Qualidade | |
| dc.contributor.author | Pereira, Pedro Mariano | |
| dc.contributor.author | Bugaighis, Iman | |
| dc.contributor.author | Matos, Pedro M. | |
| dc.contributor.author | Proença, Luís | |
| dc.date.accessioned | 2025-12-02T11:38:10Z | |
| dc.date.available | 2025-12-02T11:38:10Z | |
| dc.date.issued | 2022-10 | |
| dc.description.abstract | AIM: To evaluate the effect of three different reconditioning techniques on the shear bond strength (SBS) of rebonded brackets. MATERIALS AND METHODS: Forty-five orthodontic brackets were bonded to human premolar teeth using Transbond™ XT. After debonding, the samples were randomly assigned into equal groups to assess three techniques for the removal of residual adhesive from bracket bases: in Group A, each bracket base was sandblasted with aluminum oxide; in Group B1, each base was cleaned superficially with a greenstone bur; and in Group B2, the bases were thoroughly abraded with a greenstone bur. Subsequently, brackets were rebonded and the SBS and the adhesive remnant index (ARI) were determined. Data were analyzed using one-way analysis of variance (ANOVA), plus Tukey and Kruskal–Wallis post-hoc tests (P ≤ 0.05). RESULTS: The average SBSs were: Group A, 11.75 (±4.83) MPa; Group B1, 8.22 (±4.01) MPa; and Group B2, 7.54 (±2.85) MPa. No statistically significant differences in SBS were found between Groups A and B1(P = 0.051) and Groups B1 and B2(P = 0.885), but there was a significant difference between Groups A and B2(P = 0.016). Regarding ARI scores, there were statistically significant differences between Groups A and B2(P < 0.001) and between B1 and B2(P = 0.014), but not between Groups A and B1(P = 0.068). CONCLUSION: All reconditioning methods were found to have a positive effect, but the sandblasting technique performed best. Brackets reconditioned by sandblasting and superficial grinding mainly showed mixed-type failure, while in samples thoroughly reconditioned by greenstone bur, bonding failure occurred predominantly at the adhesive/bracket interface. | eng |
| dc.identifier.citation | Pereira, Pedro Mariano; Bugaighis, Iman; Matos, Pedro M.; Proença, Luis. The effect of different reconditioning methods on bond strength of rebonded brackets: An in-vitro study. Journal of Orthodontic Science, 11(1):p 56, DOI: 10.4103/jos.jos_61_22 | |
| dc.identifier.doi | 10.4103/jos.jos_61_22 | |
| dc.identifier.issn | 2278-0203 | |
| dc.identifier.uri | http://hdl.handle.net/10400.26/60149 | |
| dc.language.iso | eng | |
| dc.peerreviewed | yes | |
| dc.publisher | Wolters Kluwer | |
| dc.relation.hasversion | https://doi.org/10.4103/jos.jos_61_22 | |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-sa/4.0/ | |
| dc.subject | Adhesive remnant index | |
| dc.subject | in-vitro | |
| dc.subject | recycled brackets | |
| dc.subject | shear bond strength | |
| dc.title | The effect of different reconditioning methods on bond strength of rebonded brackets : an in-vitro study | eng |
| dc.type | contribution to journal | |
| dspace.entity.type | Publication | |
| oaire.citation.issue | 1 | |
| oaire.citation.startPage | 56 | |
| oaire.citation.title | Journal of Orthodontic Science | |
| oaire.citation.volume | 11 | |
| oaire.version | http://purl.org/coar/version/c_970fb48d4fbd8a85 |