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Evaluation of a novel approach in the prevention of white spot lesions around orthodontic brackets
Author(s) -
Yap J,
Walsh LJ,
Naserud Din S,
Ngo H,
Manton DJ
Publication year - 2014
Publication title -
australian dental journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.701
H-Index - 71
eISSN - 1834-7819
pISSN - 0045-0421
DOI - 10.1111/adj.12142
Subject(s) - demineralization , enamel paint , sealant , glass ionomer cement , dentistry , amorphous calcium phosphate , molar , remineralisation , casein , materials science , scanning electron microscope , chemistry , composite material , calcium , medicine , metallurgy , organic chemistry
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.