The effect of different force magnitudes for placement of orthodontic brackets on shear bond strength, in three adhesive systems
NAGIOS: RODERIC FUNCIONANDO

The effect of different force magnitudes for placement of orthodontic brackets on shear bond strength, in three adhesive systems

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The effect of different force magnitudes for placement of orthodontic brackets on shear bond strength, in three adhesive systems

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dc.contributor.author Mohammadi, Amir es
dc.contributor.author Pourkhamneh, Sohrab es
dc.contributor.author Sadrhaghighi, Amir-Houman es
dc.date.accessioned 2018-07-30T09:38:00Z
dc.date.available 2018-07-30T09:38:00Z
dc.date.issued 2018 es
dc.identifier.uri http://hdl.handle.net/10550/67285
dc.description.abstract Background: Amount of pressure exerting on orthodontic brackets during bonding can create different thickness of adhesive and affect shear bonding strength(SBS) in different adhesive systems. The purpose of this study was to evaluate the effect of different force magnitudes for placement of brackets on SBS. Material and Methods: In an in vitro study, 420 brackets were placed on the bovine teeth, using three types of adhesives, Concise (chemically cured two-paste mix), Unite (chemically cured no mix), and Transbond XT( light cured), with the application of seven force magnitudes of 50, 100, 200, 300, 400, 600 and 1000 grams in twenty-one groups of twenty samples each. SBS means (using two-way ANOVA with Tukey?s post-hoc test) and adhesive remnant index were compared between these twenty-one groups. Results: SBS increased with an increase in force. No increase in Transbond XT SBS happened after 400 grams. In addition, Transbond XT had the lowest bond strength among three adhesives ( p <0.001). Adhesive remnant index (ARI) results also indicated a shift in the failure mode from bracket-adhesive interface to adhesive-enamel interface, as the bonding force got heavier ( p <0.05). Conclusions: The force applied on bracket during bonding influences the SBS. In order to have higher bond strength, application of heavy force would be advisable. It is also recommended that constant forces be applied for bracket bonding in future studies. es
dc.source Mohammadi, Amir ; Pourkhamneh, Sohrab ; Sadrhaghighi, Amir-Houman. The effect of different force magnitudes for placement of orthodontic brackets on shear bond strength, in three adhesive systems. En: Journal of Clinical and Experimental Dentistry, 10 6 2018: 548-554 es
dc.title The effect of different force magnitudes for placement of orthodontic brackets on shear bond strength, in three adhesive systems es
dc.type info:eu-repo/semantics/article en
dc.type info:eu-repo/semantics/publishedVersion en
dc.subject.unesco UNESCO::CIENCIAS MÉDICAS es
dc.identifier.doi 10.4317/jced.54733 es

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