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Bond Strengths of Fluoride-releasing Orthodontic Resins using Plasma ARC and Halogen Lights
The aim of this study is to evaluate the shear bond strengths of metal brackets using two different fluoridereleasing adhesives (Light bond and Enlight) activated by two photoactivation systems [a conventional halogen light-curing system (HLC), and a plasma arc light curing system (PALC)]. Methods: Forty extracted premolars were divided into four groups of ten. Stainless steel brackets were bonded to the teeth using either a halogen light with a 20-second curing time or a plasma arc light with a 4-second curing time. After being immersed in a 37°C distilled water bath for 24 hours, the brackets were debonded. The bond strengths were tested on a testing machine at a crosshead speed of 0.5 mm/minute. The bracket failure interface was observed by SEM and an adhesive remnant index (ARI) score was recorded for each tooth. Results: The bond strengths of the four groups ranged from 7.78 ± 2.01 MPa to 9.42 ± 3.12 MPa. There were no significant differences among the four groups in terms of bond strength or ARI score. Conclusions: The results indicate that plasma arc light with a 4-second curing time is able to produce a similar bond strength and bracket-failure type as a longer halogen light curing time when used with either types of fluoride-releasing orthodontic adhesive.
Chen, Hui-Ping; Hsu, Hsiu-Ming; Liu, Jia-Kuang; and Lee, Tzer-Min
"Bond Strengths of Fluoride-releasing Orthodontic Resins using Plasma ARC and Halogen Lights,"
Taiwanese Journal of Orthodontics: Vol. 23:
2, Article 2.
https://doi.org/10.30036/TJO.201106.0002 Available at: https://www.tjo.org.tw/tjo/vol23/iss2/2
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