BACKGROUND: Bonding is an important step in fixed
orthodontic mechanotherapy. Many new materials introduced an
adhesive for bonding. This study was designed to evaluate the
clinical bond failure rate of orthodontic brackets bonded with
green glue: two way color changes adhesive and transbond XT
METHODS: Eighteen male patients with a mean age of 16 years
were included in the study. Convenience sampling technique was
used to select the sample for this study. The split-mouth design was
used to bond 360 brackets by one operator and both adhesives
were used in each patient. Bond failure rates were estimated with
respect to bonding procedure, dental arch, tooth type (incisor,
canine, and premolar). The results were evaluated using the chi-
square test. Kaplan – Meier analysis and the log rank test were
used to estimate the survival rate of the brackets. Bracket failure
rates for each system were analyzed, and failure causes as reported
by the patients and the quadrant of each tooth in which brackets
failed were recorded.
RESULTS: The bond failure rate was 5.00% and 4.44% for green
gloo and transbond XT group. No significant difference was found
in the bond failure rate between transbond XT and Green gloo
group. No significant difference was found in the bond failure rate
between the two groups, in relation to right and left side and the
type of teeth.
CONCLUSION: Green gloo adhesive can be effectively used to
bond orthodontic brackets.
KEYWORDS: Bond failure rate, adhesive, orthodontic brackets,
green gloo, transbond XT.