Limits...
Shear Bond Strength of Orthodontic Brackets Fixed with Remineralizing Adhesive Systems after Simulating One Year of Orthodontic Treatment.

Bezerra GL, Torres CR, Tonetto MR, Borges AH, Kuga MC, Bandeca MC, Firoozmand LM - ScientificWorldJournal (2015)

Bottom Line: Kruskal-Wallis and Mann-Whitney (with Bonferroni correction) tests showed a significant difference between the studied groups (p < 0.05).Groups XT, QC, and SEP presented the highest values of adhesive resistance and no statistical differences were found between them.Quick Cure (QC) remineralizing adhesive system presented average adhesive resistance values similar to conventional (XT) and self-etching (SEP) adhesives, while remineralizing system (OL) provided the lowest values of adhesive resistance.

View Article: PubMed Central - PubMed

Affiliation: CEUMA University, Josué Montello 01, Renascença II, 65.075-120 São Luís, MA, Brazil.

ABSTRACT
The objective of this study is to assess, in vitro, the shear bond strength of orthodontic brackets fixed with remineralizing adhesive systems submitted to thermomechanical cycling, simulating one year of orthodontic treatment. Sixty-four bovine incisor teeth were randomly divided into 4 experimental groups (n = 16): XT: Transbond XT, QC: Quick Cure, OL: Ortholite Color, and SEP: Transbond Plus Self-Etching Primer. The samples were submitted to thermomechanical cycling simulating one year of orthodontic treatment. Shear bond strength tests were carried out using a universal testing machine with a load cell of 50 KgF at 0.5 mm/minute. The samples were examined with a stereomicroscope and a scanning electron microscope (SEM) in order to analyze enamel surface and Adhesive Remnant Index (ARI). Kruskal-Wallis and Mann-Whitney (with Bonferroni correction) tests showed a significant difference between the studied groups (p < 0.05). Groups XT, QC, and SEP presented the highest values of adhesive resistance and no statistical differences were found between them. The highest frequency of failures between enamel and adhesive was observed in groups XT, QC, and OL. Quick Cure (QC) remineralizing adhesive system presented average adhesive resistance values similar to conventional (XT) and self-etching (SEP) adhesives, while remineralizing system (OL) provided the lowest values of adhesive resistance.

No MeSH data available.


Box-plot, median, and standard deviation of the values of shear bond strength (MPa) in the different adhesive systems and studied groups.
© Copyright Policy - open-access
Related In: Results  -  Collection


getmorefigures.php?uid=PMC4563098&req=5

fig1: Box-plot, median, and standard deviation of the values of shear bond strength (MPa) in the different adhesive systems and studied groups.

Mentions: Shear bond strength tests after one-year period simulation demonstrated that the groups XT, SEP, and QC did not present statistical differences between them and provided the highest shear bond strength values when compared with group OL (Figure 1).


Shear Bond Strength of Orthodontic Brackets Fixed with Remineralizing Adhesive Systems after Simulating One Year of Orthodontic Treatment.

Bezerra GL, Torres CR, Tonetto MR, Borges AH, Kuga MC, Bandeca MC, Firoozmand LM - ScientificWorldJournal (2015)

Box-plot, median, and standard deviation of the values of shear bond strength (MPa) in the different adhesive systems and studied groups.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4563098&req=5

fig1: Box-plot, median, and standard deviation of the values of shear bond strength (MPa) in the different adhesive systems and studied groups.
Mentions: Shear bond strength tests after one-year period simulation demonstrated that the groups XT, SEP, and QC did not present statistical differences between them and provided the highest shear bond strength values when compared with group OL (Figure 1).

Bottom Line: Kruskal-Wallis and Mann-Whitney (with Bonferroni correction) tests showed a significant difference between the studied groups (p < 0.05).Groups XT, QC, and SEP presented the highest values of adhesive resistance and no statistical differences were found between them.Quick Cure (QC) remineralizing adhesive system presented average adhesive resistance values similar to conventional (XT) and self-etching (SEP) adhesives, while remineralizing system (OL) provided the lowest values of adhesive resistance.

View Article: PubMed Central - PubMed

Affiliation: CEUMA University, Josué Montello 01, Renascença II, 65.075-120 São Luís, MA, Brazil.

ABSTRACT
The objective of this study is to assess, in vitro, the shear bond strength of orthodontic brackets fixed with remineralizing adhesive systems submitted to thermomechanical cycling, simulating one year of orthodontic treatment. Sixty-four bovine incisor teeth were randomly divided into 4 experimental groups (n = 16): XT: Transbond XT, QC: Quick Cure, OL: Ortholite Color, and SEP: Transbond Plus Self-Etching Primer. The samples were submitted to thermomechanical cycling simulating one year of orthodontic treatment. Shear bond strength tests were carried out using a universal testing machine with a load cell of 50 KgF at 0.5 mm/minute. The samples were examined with a stereomicroscope and a scanning electron microscope (SEM) in order to analyze enamel surface and Adhesive Remnant Index (ARI). Kruskal-Wallis and Mann-Whitney (with Bonferroni correction) tests showed a significant difference between the studied groups (p < 0.05). Groups XT, QC, and SEP presented the highest values of adhesive resistance and no statistical differences were found between them. The highest frequency of failures between enamel and adhesive was observed in groups XT, QC, and OL. Quick Cure (QC) remineralizing adhesive system presented average adhesive resistance values similar to conventional (XT) and self-etching (SEP) adhesives, while remineralizing system (OL) provided the lowest values of adhesive resistance.

No MeSH data available.