Abstract
Introduction: The aim of the study was to determine the effect of different prophylaxis pastes on shear bond strength of orthodontic brackets bonded with Self-Etch Primer (SEP). Methods: Two hundred human premolars were divided into 4 equal groups. In Group 1 (control), no prophylaxis was done prior to bonding with SEP. In Groups 2-4 different prophylaxis pastes, that is, pumice, nonfluoridated and fluoridated pastes were used respectively. After bonding, the samples were debonded using a universal testing machine at a cross head speed of 0.5 mm/min. Results: The shear bond strength (MPa) for Group 1-4 was 5.99, 7.51, 7.57, and 7.71, respectively. Conclusions: The result shows that the shear bond strength of brackets bonded with SEP without prior prophylaxis produces statistically significant lower bond strength as compared to brackets which were bonded with prior prophylaxis treatments. The shear bond strengths of orthodontic brackets bonded with SEP with prior prophylaxis with various prophylaxis pastes were not statistically different from each other. The use of fluoridated prophylaxis pastes did not adversely affect bond strength of orthodontic brackets bonded with SEP.
Highlights
The aim of the study was to determine the effect of different prophylaxis pastes on shear bond strength of orthodontic brackets bonded with Self‐Etch Primer (SEP)
The mean shear bond strength of brackets bonded in the control group was 5.99 MPa, with pumice prophylaxis was 7.51 MPa, with nonfluoridated paste was 7.57 MPa, and with fluoridated paste was 7.71 MPa [Table 1]
The results showed that the shear bond strength of brackets bonded with SEP in the control group was statistically different from that of each of three prophylactic groups
Summary
The aim of the study was to determine the effect of different prophylaxis pastes on shear bond strength of orthodontic brackets bonded with Self‐Etch Primer (SEP). In Groups 2‐4 different prophylaxis pastes, that is, pumice, nonfluoridated and fluoridated pastes were used respectively. The shear bond strengths of orthodontic brackets bonded with SEP with prior prophylaxis with various prophylaxis pastes were not statistically different from each other. The use of fluoridated prophylaxis pastes did not adversely affect bond strength of orthodontic brackets bonded with SEP. Brännström et al.[5] reported that the application of Duraphat (fluoride containing varnish) to enamel before etching did not have a negative effect on etch patterns and not affect the bond strength of a bonding resin
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