Comparing orthodontic bond failures of light-cured composite resin with chemical-cured composite resin: A 12-month clinical trial

Introduction In this clinical trial, we evaluated and compared bond failure rates of light-cured composite resin vs chemical-cured composite resin for 12 months. Methods Twenty-two subjects (356 stainless steel brackets) were included in this study, and a split-mouth design was used to randomly allo...

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Bibliographic Details
Published in:American journal of orthodontics and dentofacial orthopedics 2016-08, Vol.150 (2), p.290-294
Main Authors: Mohammed, Rufaida E, Abass, Shaza, Abubakr, Neamat H, Mohammed, Zakariya M.S
Format: Article
Language:English
Subjects:
Adolescent
Adult
Composite Resins - chemistry
Dental Bonding
Dental Stress Analysis
Dentistry
Equipment Failure
Female
Humans
Kaplan-Meier Estimate
Light-Curing of Dental Adhesives
Male
Malocclusion - therapy
Materials Testing
Orthodontic Brackets
Orthodontics, Corrective - methods
Polymerization
Prospective Studies
Stainless Steel
Surface Properties
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Summary:Introduction In this clinical trial, we evaluated and compared bond failure rates of light-cured composite resin vs chemical-cured composite resin for 12 months. Methods Twenty-two subjects (356 stainless steel brackets) were included in this study, and a split-mouth design was used to randomly allocate diagonally opposite quadrants to either chemical-cured (178 brackets) or light-cured (178 brackets) composite resin; the brackets came from the same manufacturer. The survival and failure rates of the brackets were evaluated by the mode of polymerization. The overall bracket survival rates were estimated using the Kaplan-Meier product limit estimate. Results There were no significant differences in the bond failure rates between the chemical-cured and the light-cured composites ( P  = 0.52). Bond failures were greater in posterior teeth (6.7%) than in anterior teeth (1.2%). The highest failure rate was observed in the second premolars (7.7%). Conclusions The overall failure rate of brackets with the 2 bonding systems was 2.8%, which is acceptable for clinical use. The polymerization mode did not influence the bracket survival rate significantly.
ISSN:0889-5406
1097-6752
DOI:10.1016/j.ajodo.2016.02.013