Korean J Orthod.  2013 Feb;43(1):29-34. 10.4041/kjod.2013.43.1.29.

Fluoride penetration from three orthodontic adhesives: an experimental study

• Wagner L
• Szepietowska M

• KMID: 2273466
• DOI: http://doi.org/10.4041/kjod.2013.43.1.29

Abstract

OBJECTIVE
To examine the prophylactic potential of 3 orthodontic bonding adhesives: Fuji Ortho SC, Illuminate, and Resilience.
METHODS
Thirty-six Wistar Wag rats were randomly divided into 4 groups consisting of 9 rats each. One of the groups received no treatment and was used as a control. In the other groups, individual bands coated with one of the 3 adhesives were cemented to the lower incisors. Enamel samples were obtained after 6 and 12 weeks and analyzed using scanning electron microscopy in combination with energy dispersive spectrometry.
RESULTS
Six weeks after band cementation, no fluoride was found in the enamel of the lower incisors. After 12 weeks, there was no fluoride in the enamel of teeth coated with the Resilience composite. However, in the case of the Illuminate composite and the resin-modified glass ionomer Fuji Ortho SC cement, the depth of fluoride penetration reached 2 microm and 4.8 - 5.7 microm, respectively.
CONCLUSIONS
Fluoride ions from orthodontic adhesives can be incorporated into the surface layer of the enamel. Orthodontists may apply orthodontic adhesives, such as the Fuji Ortho SC, to reduce the occurrence of caries during orthodontic treatment with fixed appliances.

Keyword

Biomaterials science; Decalcification; Fixed appliances; Orthodontics

MeSH Terms

Acrylic Resins
Adhesives
Aluminum Silicates
Animals
Cementation
Dental Cements
Dental Enamel
Fluorides
Glass
Incisor
Ions
Microscopy, Electron, Scanning
Orthodontics
Rats
Silicon Dioxide
Tooth
Acrylic Resins
Adhesives
Aluminum Silicates
Dental Cements
Fluorides
Ions
Silicon Dioxide

Figure

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  Figure 1 A cemented band with Resilience composite.

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  Figure 2 Scanning electron microscope (SEM) imaging of a sample of enamel. SEM allowed quantification of fluoride released from Illuminate at 12 weeks after orthodontic treatment. The rectangle depicts granules of CaF2. Magnification factor, ×350.

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  Figure 3 Scanning electron microscope (SEM) imaging of a cross section through the enamel. SEM allowed quantification of fluoride released from Fuji Ortho SC at 12 weeks after orthodontic treatment. The cross indicates the point of analysis. Magnification factor, ×1,000.

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