Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2010 Mar;80(2):378-84.
doi: 10.2319/042109-223.1.

Influence of modifying the resin coat application protocol on bond strength and microleakage of metal orthodontic brackets

Yasser L Abdelnaby  1 , Essam E Al-Wakeel
Affiliations

Influence of modifying the resin coat application protocol on bond strength and microleakage of metal orthodontic brackets

Yasser L Abdelnaby et al. Angle Orthod. 2010 Mar.

Abstract

Objective: To determine the shear bond strength (SBS) and microleakage of metal brackets bonded with two different adhesives when a resin coat and the adhesive were light-cured separately or simultaneously.

Materials and methods: Eighty stainless steel brackets were bonded to the enamel of extracted premolars, 40 with Transbond Plus adhesive (group 1) and 40 with Transbond XT (group 2). Each group was subdivided into four equal subgroups; a, b, c, and d. Brackets in subgroups a and b were bonded with the adhesive without coating. For brackets in subgroup c, Ortho-Choice Ortho-Coat was applied and cured after curing of the adhesive, while the coat was applied and cured with the adhesive for brackets in subgroup d. The specimens were immersed in a 2% methylene blue dye. After debonding, the teeth and brackets were examined with a stereomicroscope. The data were subjected to a two-way analysis of variance (ANOVA), Duncan multiple range test, and Pearson correlation.

Results: Both adhesives had comparable SBS. Curing of the coat after curing of the adhesive showed significantly higher SBS than other protocols. There was no significant difference in SBS of the adhesives without coating and with curing of the coat and adhesive simultaneously. Application of the coat significantly reduced microleakage. There was a significant negative relationship between SBS and microleakage.

Conclusions: SBS was significantly improved with curing of the coat and adhesive separately, while it was not adversely affected when the coat and adhesive were cured simultaneously. Using the coat with either protocol significantly reduced the microleakage.

PubMed Disclaimer

Figures

Figure 1
Figure 1
Mean shear bond strength ± SD in MPa of the studied adhesives without coating and with coating using two application protocols.
Figure 2
Figure 2
Mean microleakage ± SD in mm of the studied adhesives without coating and with coating using two application protocols.
See this image and copyright information in PMC

Similar articles

See all similar articles

Cited by

See all "Cited by" articles

References

    1. Greenlaw R, Way D. C, Galil K. A. An in vitro evaluation of a visible light-cured resin as an alternative to conventional resin bonding systems. Am J Orthod Dentofacial Orthop. 1989;96:214–220. - PubMed
    1. Mitchell L. Decalcification during orthodontic treatment with fixed appliances: an overview. Br J Orthod. 1992;19:199–205. - PubMed
    1. Gorelick L, Geiger A. M, Gwinnett A. J. Incidence of white spot formation after banding and bonding. Am J Orthod. 1982;81:93–98. - PubMed
    1. Travess H, Roberts-Harry D, Sandy J. Orthodontics. Part 6: Risks in orthodontic treatment. Br Dent J. 2004;196:71–77. - PubMed
    1. James J. W, Miller B. H, English J. D, Tadlock L. P, Buschang P. H. Effects of high speed curing devices on shear bond strength and microleakage of orthodontic brackets. Am J Orthod Dentofacial Orthop. 2003;123:555–561. - PubMed

LinkOut - more resources