Journal Article

Which orthodontic archwire sequence? A randomized clinical trial

NA Mandall, C Lowe, HV Worthington, J Sandler, S Derwent, M Abdi-Oskouei and S Ward

in The European Journal of Orthodontics

Published on behalf of European Orthodontics Society

Volume 28, issue 6, pages 561-566
Published in print December 2006 | ISSN: 0141-5387
Published online October 2006 | e-ISSN: 1460-2210 | DOI:
Which orthodontic archwire sequence? A randomized clinical trial

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The aim of this study was to compare three orthodontic archwire sequences. One hundred and fifty-four 10- to 17-year-old patients were treated in three centres and randomly allocated to one of three groups: A = 0.016-inch nickel titanium (NiTi), 0.018 × 0.025-inch NiTi, and 0.019 × 0.025-inch stainless steel (SS); B = 0.016-inch NiTi, 0.016-inch SS, 0.020-inch SS, and 0.019 × 0.025-inch SS; and C = 0.016 × 0.022-inch copper (Cu) NiTi, 0.019 × 0.025-inch CuNiTi, and 0.019 × 0.025-inch SS. At each archwire change and for each arch, the patients completed discomfort scores on a seven-point Likert scale at 4 hours, 24 hours, 3 days, and 1 week. Time in days and the number of visits taken to reach a 0.019 × 0.025-inch SS working archwires were calculated. A periapical radiograph of the upper left central incisor was taken at the start of the treatment and after placement of the 0.019 × 0.025-inch SS wire so root resorption could be assessed.

There were no statistically significant differences between archwire sequences A, B, or C for patient discomfort (P > 0.05) or root resorption (P = 0.58). The number of visits required to reach the working archwire was greater for sequence B than for A (P = 0.012) but this could not be explained by the increased number of archwires used in sequence B.

Journal Article.  3391 words. 

Subjects: Restorative Dentistry and Orthodontics

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