English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

ObjectiveThis study aimed to evaluate the effect of three different enamel roughening methods on the bond strength of metal brackets bonded to enamel surfaces with light-cured composite resin, and determine a less harmful tooth roughening method by using SEM and photographic methods.MethodsForty two metal brackets and newly extracted premolar teeth were divided into three groups (n=14 for each group). The specimens were randomly assigned to one of the following rough conditions of the teeth surfaces: Roughening with (Group 1) conventional 37% orthophosphoric acid, (Group 2) 18% HCL and pumice (microabrasion) and (Group 3) sandblasting with 50 µ alumina particles. All the surfaces were photographically examined and additional two teeth surfaces in each group were examined for SEM. Brackets were bonded to the enamel surface on the premolars with a light-polymerized resin composite. All specimens were stored in water for one week at 370C and then thermocycled. The shear bond strength values were measured on a universal testing machine. P values less than or equal to .05 were considered statistically significant.ResultsThe specimens in Group 1 and 2 had significantly greater bond strength values. There were no statistically differences between the groups. However, Group 3 showed relatively low values (7.79 ± 5.94 MPa) than the control group (P < 001). Enamel roughening method by 18% HCL and pumice gave clinically the finest enamel surface.ConclusionsMicroabrasion of the teeth with 18% HCL and pumice can be alternative tooth roughening methods for bonding of brackets to enamel. After microabasion occurred, fine polished surfaces on the enamel give an easiness dental plaque control during orthodontic treatment.

Evaluation of Three Different Enamel Roughening Method: An SEM and Photographic Study