الفهرس 
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Abstract
Aim: This study is conducted to overcome the problems of conventional indirect bonding technique,
through investigating accuracy of two novel three dimensionally digitally printed indirect bonding
transfer trays (full arch & segmented) in terms of accuracy of transferring brackets, rate of immediate
bond failure and chair side time.
Methodology: Twelve patients (6 in each group) with mild to moderate crowding, requiring
orthodontic treatment with full set of permanent teeth, will be selected for this study. A total of 144
attachments will be used (72 Full Arch Tray and 72 Segment Arch Tray). The same bracket type
and bonding material will used in both groups. The accuracy of bracket transfer will be measured by 3
Shape Ortho planner software (Bracket Placement Module), rate of bond failure by counting number of
debonded brackets upon tray removal & chair side time by using digital stop watch.
Results: Linear attachment deviations were within the clinically acceptable range of deviation (+/- 0.5
mm) in all three planes for both techniques. There was no statistically significant difference between
two techniques regarding mesio-distal and bucco-lingual linear deviations. Both techniques showed no
differences in linear directional deviation in the mesio-distal plane, but there were more occlusal and
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buccal bias deviations in both techniques. Both techniques appeared to be comparable for the
percentage of angular directional deviation and torqueing and rotational deviation. Segmented tray
technique showed less bond failure rates compared to the full arch tray technique, however the
percentage of tube failure was higher than bracket failure in both indirect bonding techniques. The
chairside time difference between the two indirect bonding techniques was statistically significant, with
the full arch tray technique taking less chairside time than segmented tray technique.
Conclusion: Insignificant differences between segmented and full arch digital tray groups were found
regarding accuracy of bracket transfer. Although chairside time of segmented digital tray group was
longer, bond failure rate was less comparable to full arch digital tray group.