Evaluation of a novel approach in the prevention of white spot lesions around orthodontic brackets

Yap, J., Walsh, L. J., Naser-Ud Din, S., Ngo, H. and Manton, D. J. (2014) Evaluation of a novel approach in the prevention of white spot lesions around orthodontic brackets. Australian Dental Journal, 59 1: 70-80. doi:10.1111/adj.12142


Author Yap, J.
Walsh, L. J.
Naser-Ud Din, S.
Ngo, H.
Manton, D. J.
Title Evaluation of a novel approach in the prevention of white spot lesions around orthodontic brackets
Journal name Australian Dental Journal   Check publisher's open access policy
ISSN 0045-0421
1834-7819
Publication date 2014-03
Year available 2014
Sub-type Article (original research)
DOI 10.1111/adj.12142
Open Access Status
Volume 59
Issue 1
Start page 70
End page 80
Total pages 11
Place of publication West Sussex, United Kingdom
Publisher Wiley-Blackwell Publishing
Collection year 2015
Language eng
Formatted abstract
Background: The purpose of this study was to evaluate and compare the relative efficacy of a resin fissure sealant, nano-filled self-adhesive protective coating, resin infiltrant, glass ionomer cement (GIC), and GIC containing casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) in preventing the formation of subsurface lesions of enamel (SLE) adjacent to orthodontic brackets by acting as an enamel surface sealant (ESS).

Methods: Eighty-five enamel specimens with molar tubes bonded at their centre were randomly divided into five groups, each treated with a different material at the bracket's periphery. Specimens were stored in an acetate demineralization solution at pH 4.5 for 7 days at 37°C then imaged using quantitative light-induced fluorescence (QLF) to determine the difference in fluorescence (∆F) between sound- and acid-exposed enamel. Lesion cross-sections were then examined using backscattered scanning electron microscopy (SEM) to measure lesion depth.

Results: The use of GIC alone or incorporating CPP-ACP significantly reduced ∆F compared with other materials. Backscattered SEM images showed no measurable demineralization for enamel treated with either GIC material in contrast with other groups, which showed statistically significant demineralization levels.

Conclusions: The fluoride-releasing effects and CPP-ACP benefits of the GIC materials show promise as an effective ESS in inhibiting enamel demineralization adjacent to orthodontic brackets.
Keyword caries prevention
enamel surface sealant
quantitative light-induced fluorescence
scanning electron microscopy
White spot lesion
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2015 Collection
School of Dentistry Publications
 
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