الفهرس 
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Abstract
This study was to evaluate the effect of different fluoride
releasing bonding agents in prevention of enamel
demineralization around the orthodontic brackets.
A total number of 100 extracted first premolars collected
from the surgical and orthodontic clinics in the university.
The teeth were examined for caries; only caries free teeth
were selected. They were placed in saline solution till the
time of use.
The 100 premolars divided into five equal groups:
The group1: twenty brackets were bonded by Transbond
XT adhesive.
The group 2: twenty brackets were bonded by Transbond
plus color change adhesive.
The group 3: twenty brackets were bonded by Transbond
XT and covered by fluoride.
The group 4: twenty brackets were bonded by GC Fuji
ORTHO lC.