Abstract:

Objective

To investigate the clinical effect of two kinds of orthodontic cement in the bonding of directly bonded buccal tube.

Methods

60 cases were divided into two groups randomly， and directly bonded buccal tubes were bonded seperately with GC Fuji ortho bonding adhesive （A） and enamel bonding resin （B）. The bonding failure rate and the adhesive remnant index were calculated.

Results

The bonding failure rates of the two groups were A ＜B， however had no significant difference （χ²=2.772，P ＞0.05）. The bonding failure rate in the upper first molar was the lowest and that of the upper second molar was the highest in both of the two groups.Most of the adhesive remnant index in both group are 3.

Conclusions

The adhesive effect of GC Fuji ORTHO and enamel bonding resin has no significant difference in bonding directly bonded buccal tube. The fractures of the debondings in both groups were mainly between the enamel and the cement.

Key words: Directly bonded buccal tube, Enamel bonding resin, GC Fuji ortho bonding adhesive, Bond