Alignment efficiency of coaxial tubular superelastic nickel‐titanium vs single‐stranded superelastic nickel‐titanium in relieving mandibular anterior crowding in extraction cases: A single‐centre randomized controlled clinical trial

Abstract

Structured Abstract Objectives To compare the alignment efficiency of coaxial tubular and single‐stranded 0.016” superelastic NiTi archwires in relieving mandibular anterior crowding in extraction cases and to evaluate whether alignment efficiency differed as the initial irregularity increased. Setting and Sample Population Forty female patients aged between twelve and twenty years from the postgraduate orthodontic clinic at the authors’ centre. Materials and Methods All patients in this single‐centre, 2‐arm parallel trial were randomly allocated in a 1:1 ratio and the mandibular anterior irregularity was measured from the mandibular cast at 0‐, 4‐, 8‐ and 12‐week intervals using a digital calliper. Results All forty patients (mean age, 15.08 ± 2.11) completed the study with either coaxial tubular superelastic NiTi (mean age, 15.30 ± 2.36) or single‐stranded superelastic NiTi (mean age, 14.85 ± 1.84). The largest mean irregularity index reduction of −4.88 ± 2.74 and −6.17 ± 2.38 in the single‐stranded superelastic NiTi and the coaxial tubular superelastic NiTi groups, respectively (P = 0.122) was at 4 weeks. Student's t test and repeated measures ANOVA indicated that none of the mean comparisons were statistically significant at a 5% level. Pearson's correlation value (r) indicated no statistically significant influence of initial crowding on alignment efficiency. Conclusions There was no statistically significant difference between the alignment efficiency of coaxial tubular superelastic NiTi and single‐stranded superelastic NiTi in extraction cases, and the degree of initial crowding had no influence on the alignment efficiency.

Tooth alignment and pain experience with A-NiTi versus Cu-NiTi: a randomized clinical trial

“…In contrast to the present study, Sebastian et al [ 17 ] reported 6.17 mm and 4.88 mm reduction in the irregularity index in the anterior site of the lower dental arch by using coaxial tubular SENT and single-stranded NiTi archwires, respectively, which were considerably greater than the values reported in the present study. It appears that lower mean age in their study may be an important factor explaining the difference between their results and ours, because it has been demonstrated that age significantly affects the success of orthodontic tooth movement [ 22 ].…”

“…Similarly, Nabbat and Yassir [ 16 ] reported equal efficacy of heat-activated NiTi (HANT) archwire and SENT archwire for alignment of the teeth. Sebastian et al [ 17 ] reported that coaxial tubular and single-stranded SENT archwires were equally effective for correction of crowding of the anterior site of the lower dental arch. Moreover, Nordstrom et al [ 18 ] demonstrated equal efficacy of TiNbTaZr and the conventional NiTi archwires for alignment of the teeth.…”

Extracciones dentarias como alternativa de tratamiento en casos de clase esqueletal I en adultos jóvenes con apiñamiento severo: Revisión de Literatura

“…Brough et al Demostraron en su artículo de 2010 que la morfología, el tamaño y la forma de los caninos pueden tener un efecto intenso en el atractivo de la sonrisa percibida entre la población general, los dentistas los ortodoncistas. (Sebastian et al, 2019).…”

Contemporary orthodontic archwires: A literature review

“…It surpasses singlestranded superelastic NiTi in several ways such as shorter treatment duration, greater springback, resistance to permanent deformation, and a low-force delivery [20]. The flexibility of the wire is increased by a "hollow center" design that allows the archwire to fold on itself so full engagement in the severe malalignment can be performed while applying less amount of force than the conventional initial archwires [21].…”