We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Comparison of changes in irregularity and transverse width with nickeltitanium and niobium-titanium-tantalum-zirconium archwires during initial orthodontic alignment in adolescents: A double-blind randomized clinical trial.
- Authors
Nordstrom, Barrett; Toshihiro Shoji; Anderson, W. Cameron; Fields Jr., Henry W.; Beck, F. Michael; Do-Gyoon Kime; Teruko Takano-Yamamoto; Toru Deguchi
- Abstract
Objectives: The purpose of this prospective, double-blind, randomized clinical trial was to compare the clinical efficiency of nickel-titanium (NiTi) and niobium-titanium-tantalum-zirconium (TiNbTaZr) archwires during initial orthodontic alignment. Materials and Methods: All subjects (ages between 12 and 20 years) underwent nonextraction treatment using 0.022-inch brackets. All patients were randomized into two groups for initial alignment with 0.016-inch NiTi archwires (n ¼ 14), or with 0.016-inch TiNbTaZr archwires (n ¼ 14). Digital scans were taken during the course of treatment and were used to compare the improvement in Little's Irregularity Index and the changes in intercanine and intermolar widths. Results: There was approximately a 27% reduction in crowding during the first month with the use of 0.016-inch TiNbTaZr (Gummetal) wire, and an additional 25% decrease in crowding was observed during the next month. There was no significant difference between the two treatment groups in the decrease in irregularity over time (P ¼ .29). There was no significant difference between the two groups in the changes in intercanine and intermolar width (P ¼ .80). Conclusions: It can be concluded that Gummetal wires and conventional NiTi wires possess a similar ability to align teeth and Gummetal wires have additional advantages over conventional NiTi, such as formability and use in patients with nickel allergy.
- Subjects
ORTHODONTIC appliances; ORTHODONTICS; CLINICAL trials; NICKEL-titanium alloys; DENTISTRY
- Publication
Angle Orthodontist, 2018, Vol 88, Issue 3, p348
- ISSN
0003-3219
- Publication type
Article
- DOI
10.2319/061417-393.1