Brazilian Journal of Oral Sciences
Piracicaba Dental School - UNICAMP
Vol. 11, No. 4, 2012, pp. 459-462
Bioline Code: os12051
Full paper language: English
Document type: Research Article
Document available free of charge
Brazilian Journal of Oral Sciences, Vol. 11, No. 4, 2012, pp. 459-462
© Copyright 2012 - Braz J Oral Sci.
Shear bond strength of nanofilled flowable resins used for indirect bracket bonding|
da Silva, Carolina Ferreira Leite Moreira; Correa, Marcelo Alves; Sobrinho, Lourenço Correr; Moro, Alexandre; Moresca, Ricardo Cesar & Correr, Gisele Maria
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 37oC 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.
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
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.
orthodontics, indirect bonding, orthodontic brackets
Alternative site location: http://www.fop.unicamp.br/brjorals