Effects of surface treatment on orthodontic bonding to amalgam

Skilton, Jonathan W.; Tyas, Martin J.; Woods, Michael G.

doi:10.2478/aoj-2006-0007

Abstract

Aim

This study aimed to compare the shear bond strengths of metal brackets bonded to amalgam surfaces.

Methods

One hundred and fifty amalgam samples were fabricated and either polished, roughened with a diamond bur or sandblasted with 50 mm aluminium oxide. Following thermocycling the shear bond strengths were tested and compared with control samples bonded to etched enamel.

Results

Concise resin composite, Metal Primer/Concise resin composite and All-Bond II/Concise resin composite bonded to sandblasted amalgam gave the highest mean shear strengths and were statistically similar to the etched enamel/Concise resin composite controls.

Conclusion

One would expect sandblasted amalgam surfaces to be associated with higher shear bond strengths than diamond bur roughened or polished amalgam surfaces.

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Effects of surface treatment on orthodontic bonding to amalgam

Abstract

Aim

Methods

Results

Conclusion

Paradigm

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