Effect of Saliva Contamination and sequencing time of curing the Transbond™ Plus Self Etching Primer on the Shear Bond Strength of Orthodontic Brackets

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Abstract:

Abstract Background and aim: Over the years, improvments have been done to simplify clinical bonding procedure. One of these material is Transbond™ Plus Self Etching. The aim of this study was to evaluate the effect of saliva contamination and reusing Transbond™ Plus Self Etching Primer (SEP) on shear bond strength of orthodontic brackets. Materials and Methods: Fifty premolars divided into five groups of 10. Orthodontic brackets were bonded with Transbond XT adhesive (3M, Unitek) using the following treatment: Group1- Transbond™ Plus Self Etching Primer(SEP)/ Transbond XT adhesive/ Curing. Group2- Self-Etching Primer/ Curing/ Transbond XT adhesive / Curing. Group3- Self-Etching Primer/ Curing/ saliva contamination/ Transbond XT adhesive/ Curing. Group4- Self-Etching Primer/ Curing / saliva contamination/ Self-Etching Primer/ Transbond XT adhesive/ Curing. Group5- Self-Etching Primer/ Curing/saliva contamination/ Self-Etching Primer/ Curing/ Transbond XT adhesive/ Curing. Samples were stored for 24h in distilled water at 37 ˚C, then thermocycled for 1000 cycles (5-55˚C). Shear bond strength of each sample was obtained using a universal testing machine. Data were analyzed statistically. Using one way anaylisis & variance, Tukeey and Scheffe. Result: Clinically acceptable bond strength was in all groups. There was no statistically significant difference between the groups. Conclusion: Saliva contamination has no statistically significant effect on the shear bond strength of Self etching primer, however light curing of Self etching primer, before saliva contamination, increased the bond strength. Keywords: Shear Bond strength; Light curing; Orthodontic brackets; Saliva; Self-etching Primer  

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Journal title

volume 16  issue 2

pages  78- 86

publication date 2019-06

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