International Journal of Medical Investigation
Fri, Dec 27, 2024
Volume 7, Issue 4 (12-2018)
Int J Med Invest 2018, 7(4): 21-29 |
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Ahangar Atashi M H, Khosravi S, Goshaderoo A, Goshaderoo A. Clinical Bonding Durability Assessment of Rebonded Brackets considering ARI Score
. Int J Med Invest 2018; 7 (4) :21-29
URL: http://intjmi.com/article-1-348-en.html
URL: http://intjmi.com/article-1-348-en.html
Assistant professor, Department of Orthodontics, Shahed University of medical science, Tehran, Iran
Abstract: (6239 Views)
Introduction: Debonding is known as one of the main problems in orthodontics. Rebonding these brackets require clinical chair time and is a nuisance and costly process in the course of orthodontic treatment. Clinical bonding durability of new brackets in comparison with rebonded brackets with different Adhesive Remnant Index (ARI) scores has been investigated in this study.
Methods: The subjects of this study consisted of 76 debonded brackets of maxillary first and second premolars. According to ARI scoring after debonding, brackets were divided into two groups. 27 debonded brackets with composite residual value (ARI) greater than or equal to 90% were assigned to group A (ARI≥4) and 28 brackets to group B (ARI≤2) with a composite residual value less than or equal to 10%. The third group was used as a control group in which 21 new brackets were used.
Findings: Similar bonding durability time was recorded in group A (ARI≥4) and group C (new brackets) which was significantly higher than of group B (ARI≤2).
Conclusion: Debonded brackets with high ARI score (ARI≥4) and new brackets have the same performance on bonding durability. Therefore, a high ARI debonded bracket can be used instead of a new bracket for rebonding.
Methods: The subjects of this study consisted of 76 debonded brackets of maxillary first and second premolars. According to ARI scoring after debonding, brackets were divided into two groups. 27 debonded brackets with composite residual value (ARI) greater than or equal to 90% were assigned to group A (ARI≥4) and 28 brackets to group B (ARI≤2) with a composite residual value less than or equal to 10%. The third group was used as a control group in which 21 new brackets were used.
Findings: Similar bonding durability time was recorded in group A (ARI≥4) and group C (new brackets) which was significantly higher than of group B (ARI≤2).
Conclusion: Debonded brackets with high ARI score (ARI≥4) and new brackets have the same performance on bonding durability. Therefore, a high ARI debonded bracket can be used instead of a new bracket for rebonding.
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