Journal Article

Enamel colour changes at debonding and after finishing procedures using five different adhesives

Göksu Trakyalı, Fulya Işık Özdemir and Tülin Arun

in The European Journal of Orthodontics

Published on behalf of European Orthodontics Society

Volume 31, issue 4, pages 397-401
Published in print August 2009 | ISSN: 0141-5387
Published online May 2009 | e-ISSN: 1460-2210 | DOI:
Enamel colour changes at debonding and after finishing procedures using five different adhesives

Show Summary Details


The purpose of this study was to evaluate enamel colour alteration of five different orthodontic bonding adhesives by means of digital measurements after exposure to photoageing in order to simulate discolouration of adhesives in vivo.

Seventy-five non-carious premolars were randomly divided into five equal groups. The brackets were bonded with five different adhesives (Transbond XT, Eagle Bond, Light Bond, Blugloo, Unite) and subjected to artificial accelerated photoageing for 24 hours. The enamel surfaces were colourimetrically evaluated before bonding, following debonding and cleaning with a tungsten carbide bur, after polishing with Stainbuster, and after photoageing of the debonded enamel surface. The Commission Internationale de l’Eclairage(CIE) colour parameters (L*a*b*) were recorded and colour differences (ΔE) were calculated. The results were statistically analyzed using the Kruskall–Wallis test. Further investigation among subgroups was performed using Dunn's multiple correlation test (P < 0.05). The clinical detection threshold for ΔE value was set at 3.7 units.

ΔE values between the first and second measurements showed an increase in the Transbond XT, Eagle Bond, and Light Bond groups. The highest ΔE value was 1.51 ± 1.15 in the Transbond XT group. No clinically significant ΔE value was observed.

Colour changes of orthodontic bonding systems induced by photoageing cannot be clinically observed. Polishing with Stainbuster eliminates enamel surface roughness, which may improve light reflection.

Journal Article.  2586 words. 

Subjects: Restorative Dentistry and Orthodontics

Full text: subscription required

How to subscribe Recommend to my Librarian

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.