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In vitro evaluation of fluoride and non-fluoride releasing orthodontic adhesives on bracket bond strength.

A laboratory study was conducted to evaluate the shear bond strength of a metal orthodontic bracket bonded to enamel with four commercially available orthodontic adhesives. The mean shear bond strengths ranged from 0.95 to 16.59 MPa. A fluoride-releasing glass ionomer adhesive resulted in significantly lower bond strengths when compared to resin adhesive systems.