Shear bond strength of nanofilled flowable resins used for indirect bracket bonding

Authors

  • Carolina Ferreira Leite Moreira da Silva Positivo University
  • Marcelo Alves Correa University of São Paulo – ESALQ
  • Lourenço Correr Sobrinho University of Campinas, UNICAMP
  • Alexandre Moro Positivo University
  • Ricardo Cesar Moresca Positivo University
  • Gisele Maria Correr Positivo University

DOI:

https://doi.org/10.20396/bjos.v11i4.8641224

Keywords:

Orthodontics, Indirect bonding, Orthodontic bracke

Abstract

Aim: To evaluate the bond strength of brackets fixed with different materials (two light-cured nanofilled resins - Transbond Supreme LV and Flow Tain LV, a light-cured resin - Transbond XT (control) and two chemically cured resins for indirect bonding - Sondhi Rapid- Set and Custom I.Q.) using the indirect bonding technique after 10 min and 24 h, and evaluate the type of failure. Methods: One hundred premolars were selected and randomly divided into groups (n=10) according to the material and fixation period. The brackets were bonded through the indirect technique following the manufacturer’s instructions and stored in deionized water at 37o C for 10 min or 24 h. After, the specimens were submitted to a shear bond strength (SBS) test (Instron) at 0.5 mm/min and evaluated for adhesive remnant index (ARI). The data were submitted to ANOVA and Tukey’s test (p<0.05) and the ARI scores were submitted to the chi-square test. Results: It could be observed a significant difference among the materials (Flow Tain LV = Transbond Supreme LV = Transbond XT> Sondhi Rapid-Set > Custom I.Q.). There was no significant difference in resistance values between 10 min and 24 h, regardless of the materials. Most groups showed adhesive remaining adhered to the enamel (scores 2 and 3) without statistically significant difference (p>0.05). Conclusions: It was concluded that the light-cured nanofilled materials used in indirect bonding showed greater resistance than the chemically cured materials. The period of fixation had no influence on the resistance for different materials.

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Author Biographies

Carolina Ferreira Leite Moreira da Silva, Positivo University

Graduate student, Masters Program in Clinical Dentistry, Positivo University, Curitiba, PR.

Marcelo Alves Correa, University of São Paulo – ESALQ

Researcher, Department of Statistics, University of São Paulo – ESALQ, Piracicaba, SP.

Lourenço Correr Sobrinho, University of Campinas, UNICAMP

Professor, Department of Restorative Dentistry, Dental Material Area, Piracicaba Dental School, University of Campinas, Piracicaba, SP.

Alexandre Moro, Positivo University

Professor Masters Program in Clinical Dentistry, Positivo University, Curitiba PR.

Ricardo Cesar Moresca, Positivo University

Professor Masters Program in Clinical Dentistry, Positivo University, Curitiba PR.

Gisele Maria Correr, Positivo University

Professor Masters Program in Clinical Dentistry, Positivo University, Curitiba PR.

Published

2015-10-22

How to Cite

1.
Silva CFLM da, Correa MA, Correr Sobrinho L, Moro A, Moresca RC, Correr GM. Shear bond strength of nanofilled flowable resins used for indirect bracket bonding. Braz. J. Oral Sci. [Internet]. 2015 Oct. 22 [cited 2022 Dec. 6];11(4):458-62. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8641224

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