A twelve-month clinical trial comparing the bracket failure rates of light-cured resin-modified glass-ionomer adhesive and acid-etch chemical-cured composite

Abstract

A clinical study was undertaken to compare the failure rate over a twelve-month period of orthodontic brackets bonded with a light-cured resin-modified glass-ionomer (Fuji Ortho LC-GC International Japan) and an acid-etch chemically-cured two-paste composite (Orthodontic Concise - 3M USA). Failure rates of 6.1 per cent and 5.4 per cent respectively were reported, with no statistically significant difference b etween the two adhesives. This finding, along with the relative ease of use and possible advantages of reduced risk of peribracket demineralisation, suggests that the resin-modified glass-ionomer adhesive may become more popular as a bracket adhesive.

Keywords

• bonding failures
• resin-modified glass-ionomer adhesive
• acid-etch composite adhesive