NCT02415673

Alignment Efficiency of Two Thermal Activated Orthodontic Archwire Sequences

Alignment Efficiency of Two Thermal Activated Orthodontic Archwire Sequences Based on Transition Temperature Range: A Randomized Clinical Trial

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 44 (actual)
• Sponsor: Faculty Sao Leopoldo Mandic Campinas · Academic / Other
• Sex: All
• Age: 15 Years – 25 Years
• Healthy volunteers: Accepted

Summary

The aim of the present study was to compare the effectiveness of two alignment sequences with thermal activated archwires with different Af temperatures applied for the correction of mandibular anterior crowding

Detailed description

A parallel randomized clinical trial was conducted involving 42 patients ages 15 to 25 years (mean: 19.5 years) who required orthodontic treatment including the correction of mandibular anterior crowding. Eligibility criteria were no active caries, exemplary hygiene, non- extraction in the lower arch and no significant tooth size or shape abnormalities. Outcome: The primary outcome was the degree of crowding measured on plaster casts using Little's Irregularity Index. The secondary outcome was crowding survival time until the occurrence of correction in a six-month period. Randomization: The patients were randomly allocated to the different groups using sealed opaque envelopes. Blinding: The patients were blinded to the group to which they were allocated. Intervention: Patients were treatment with a pre-adjusted appliance (0.022 in- Roth prescription). Two nickel-titanium alignment and leveling sequences were employed - NiTi archwire: 0.012 in and 0.019 X 0.025 in; and thermal activated NiTi archwires: 0.018 in and 0.016 X 0.022 in with different austenite finish temperatures (37ºC and 35ºC), which formed the different study groups.

Conditions

• Crowding

Interventions

Type	Name	Description
DEVICE	Fixed orthodontics appliance and arch wire	Two nickel-titanium alignment and leveling sequences were employed

Timeline

• Start date: 2010-08-01
• Primary completion: 2011-04-01
• Completion: 2011-10-01
• First posted: 2015-04-14
• Last updated: 2015-04-14