Colour improvement and stability of white spot lesions following infiltration, micro-abrasion, or fluoride treatments in vitro
2014 | journal article. A publication with affiliation to the University of Göttingen.
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Colour improvement and stability of white spot lesions following infiltration, micro-abrasion, or fluoride treatments in vitro
Yetkiner, E.; Wegehaupt, F.; Wiegand, A. ; Attin, R. & Attin, T. (2014)
European Journal of Orthodontics, 36(5) pp. 595-602. DOI: https://doi.org/10.1093/ejo/cjt095
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- Authors
- Yetkiner, Enver; Wegehaupt, Florian; Wiegand, Annette ; Attin, Rengin; Attin, Thomas
- Abstract
- BACKGROUND/OBJECTIVES: White spot lesions (WSLs) are unwelcome side effects of fixed appliances that compromise the treatment outcome. Recently, infiltration of WSLs has been introduced as a viable treatment alternative. The objective was to evaluate the colour improvement of WSLs and their stability against discolouration following infiltration, fluoride, or micro-abrasion treatments in vitro. MATERIALS/METHODS: Artificial WSLs were created in bovine enamel (N = 96) using acidic buffer solution (pH 5, 10 days) and were randomly allocated to four groups. Specimens were treated with infiltration (Icon, DMG), fluoride (Elmex Caries Protection, GABA), and micro-abrasion (Opalustre, Ultradent) or remained untreated (control). Groups were discoloured for 24 hours in tea or tea + citric acid. Colour components and visible colour change (L , a , b ,Delta E) were measured spectrophotometrically on following time points: baseline, after WSL formation, after treatment, and during discolouration (8, 16, and 24 hours). Data were analysed using Kruskal-Wallis and Mann-Whitney tests. RESULTS : WSL formation increased (L ) in all groups. Only infiltration reduced this effect to baseline. Highest Delta E improvement was obtained by infiltration and micro-abrasion followed by fluoride. This improvement was stable only for infiltration during discolouration. L , a , and b changed significantly during discolouration in all groups except infiltration. Within the same treatment group, discolouration solutions did not differ significantly. LIMITATIONS: In vitro testing cannot replicate the actual mode of colour improvement or stability but can be used for ranking materials and techniques. CONCLUSIONS/IMPLICATIONS: Infiltration and micro-abrasion treatments were capable of diminishing the whitish appearance of WSLs. Only infiltrated WSLs were stable following discolouration challenge.
- Issue Date
- 2014
- Status
- published
- Publisher
- Oxford Univ Press
- Journal
- European Journal of Orthodontics
- ISSN
- 1460-2210; 0141-5387
- Sponsor
- DMG, Hamburg, Germany