Evaluation of the alignment efficiency of nickel-titanium and copper-nickel-titanium archwires in patients undergoing orthodontic treatment over a 12-week period: A single-center, randomized controlled clinical trial.
10.4041/kjod.2018.48.3.153
- Author:
Burcu AYDIN
1
;
Neslihan Ebru ŞENIŞIK
;
Ozgür KOŞKAN
Author Information
1. Department of Orthodontics, Faculty of Dentistry, Suleyman Demirel University, Isparta, Turkey. nebuydas@yahoo.com
- Publication Type:Clinical Trial ; Randomized Controlled Trial ; Original Article
- Keywords:
Three-dimensional digital dental cast analysis;
Nitinol;
Copper-nickel-titanium;
Wire
- MeSH:
Bicuspid;
Crowding;
Dental Arch;
Dental Models;
Dentition;
Dentition, Permanent;
Female;
Humans;
Male;
Malocclusion;
Outcome Assessment (Health Care);
Random Allocation;
Single-Blind Method
- From:The Korean Journal of Orthodontics
2018;48(3):153-162
- CountryRepublic of Korea
- Language:English
-
Abstract:
OBJECTIVE: The aim of this trial was to compare the alignment efficiency and intermaxillary arch dimension changes of nickel-titanium (NiTi) or copper-nickel-titanium (CuNiTi) round archwires with increasing diameters applied sequentially to the mandibular arch. METHODS: The initial alignment phase of fixed orthodontic treatment with NiTi or CuNiTi round archwires was studied in a randomly allocated sample of 66 patients. The NiTi group comprised 26 women, 10 men, and the CuNiTi (27℃) group comprised 20 women, 10 men. The eligibility criteria were as follows: anterior mandibular crowding of minimum 6 mm according to Little's Irregularity Index (LII), treatment requiring no extraction of premolars, 12 to 18 years of age, permanent dentition, skeletal and dental Class I malocclusion. The main outcome measure was the alignment of the mandibular anterior dentition; the secondary outcome measure was the change in mandibular dental arch dimensions during 12 weeks. Simple randomization (allocation ratio 1:1) was used in this single-blind study. LII and mandibular arch dimensions were measured on three-dimensional digital dental models at 2-week intervals. RESULTS: No statistically significant difference was observed between NiTi and CuNiTi according to LII (p > 0.05). Intercanine and intermolar arch perimeters increased in the CuNiTi group (p < 0.001). Inter-first premolar width showed a statistically significant interaction in week × diameter × application (p < 0.05). CONCLUSIONS: The effects of NiTi and CuNiTi round archwires were similar in terms of their alignment efficiency. However, the intercanine and intermolar arch perimeters, and the inter-first premolar width changes differed between groups.
