Color stability and fluorescence of different orthodontic esthetic archwires
To evaluate the color stability of six esthetic archwires at different time periods and their fluorescence. Samples were evaluated after 7, 14, and 21 days of immersion in staining solution. Color measurements were performed by means of a spectrophotometer according to the Commission Internationale...
Saved in:
Published in | The Angle orthodontist Vol. 83; no. 1; pp. 127 - 132 |
---|---|
Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
United States
Edward H Angle Education and Research Foundation, Inc
01.01.2013
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | To evaluate the color stability of six esthetic archwires at different time periods and their fluorescence.
Samples were evaluated after 7, 14, and 21 days of immersion in staining solution. Color measurements were performed by means of a spectrophotometer according to the Commission Internationale de I'Eclairage L*a*b* system, and color changes (ΔE*) and National Bureau of Standards units were computed. The fluorescence of as-received samples was evaluated by two observers and compared with that of a bovine central incisor. Statistical differences were investigated using analysis of variance and Tukey's post hoc test.
All brands showed statistically significant color change after 21 days (ΔE* from 1.88 to 12.06). The Optis archwire (fiber-reinforced composite) presented the highest color alteration, although staining was observed only near its ends. The Trianeiro archwire (coated nickel-titanium) and the Ortho Organizers archwire (coated stainless steel) presented with less color change. The Optis archwire was the only one that presented with fluorescence similar to that of bovine teeth.
All esthetic archwires assessed showed clinically noticeable color change after 21 days in staining solution. The optical properties of currently available esthetic archwires may not yet be ideal. |
---|---|
Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0003-3219 1945-7103 |
DOI: | 10.2319/121311-764.1 |