Arch expansion efficiency of coaxial tubular superelastic nickel-titanium in comparison to single-stranded superelastic nickel-titanium while relieving mandibular anterior crowding: A randomized controlled study

Abstract

Aim: The aim of the study is to compare the efficiency of six-stranded coaxial tubular superelastic nickel–titanium (NiTi) archwire and a single-stranded wire in relieving anterior mandibular crowding. Materials and Methods: This double-blind randomized study included 40 patients, categorized into two groups: Sentalloy round group and Speed tubular supercable group (20 each). After taking alginate impressions, the allocated archwire was engaged. With a digital caliper, intercanine, interpremolar, and intermolar width were recorded on the study models, immediately and at 4, 8, and 12 weeks stages. The Statistical Package for the Social Sciences (SPSS) version 20 was used for analysis. Results: The measured parameters were increased in both the groups, with the difference being insignificant statistically. Conclusion: Superelastic coaxial NiTi wires show better efficiency in relieving anterior crowding than single-stranded NiTi wire.

Surface Characteristics of Esthetic Nickel–Titanium and Beta-Titanium Orthodontic Archwires Produced by Plasma Electrolytic Oxidation (PEO)—Primary Results

“…Two types of orthodontic archwires were used for this study: 0.014-inch NiTi (NiTi classic, 3M, Neuss, Germany) and 0.19 × 0.25-inch β-Ti (TMA, Ormco, Amersfoort, Netherlands) archwires. The 0.014-inch NiTi archwire is a highly flexible wire that is used for the initial alignment of irregular teeth [14]. The 0.19 × 0.25-inch β-Ti archwire is a more rigid archwire that is used for the working and final phase of orthodontic treatment [15,16].…”