Alignment Efficiency of Two Thermal Activated Orthodontic Archwire Sequences

NCT02415673 | Completed DMC

• 1 other identifier: UMA887599
• Study Type: interventional
• Target: 44
• Locations: 0 countries
• Sites: N/A

Brief 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

Conditions

Crowding

Keywords

Orthodontics; Nitinol

Outcome Measures

Primary Outcomes (1)

• Degree of crowding measured on plaster casts using Little's Irregularity Index

  6 months

Secondary Outcomes (1)

• crowding survival time

  six months

Study Arms (2)

NiTi Af 37ºC

EXPERIMENTAL

Patients were treatment with fixed orthodontics appliance and arch wire. 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).

Device: Fixed orthodontics appliance and arch wire

NiTi Af 35ºC

EXPERIMENTAL

Patients were treatment fixed orthodontics appliance and arch wire. 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 (35ºC)

Device: Fixed orthodontics appliance and arch wire

Interventions

Fixed orthodontics appliance and arch wire DEVICE

Two nickel-titanium alignment and leveling sequences were employed

Also known as: the alignment of mandibular anterior crowding

NiTi Af 35ºC; NiTi Af 37ºC

Eligibility Criteria

• Age: 15 Years - 25 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Child (0-17), Adult (18-64)

You may qualify if:

• Moderate mandibular anterior crowding (crowding: 4 to 6 mm) according to Little's Irregularity Index
• Presence of all teeth in lower arch through to the second molars, no indication for extractions in the lower arch
• No need for therapeutic interventions (use of inter-maxillary elastic bands, inter-dental wear, open NiTi spine, active lip bumper)
• Absence of systemic conditions that could affect tooth movements
• Absence of significant tooth size or shape abnormalities
• No history of trauma and no history of root resorption or alveolar bone loss.

You may not qualify if:

• Severe mandibular anterior crowding (crowding: up to 7 mm) according to Little's Irregularity Index
• Absence of any teeth in lower arch through to the second molars
• Indication for extractions in the lower arch
• Need for therapeutic interventions (use of inter-maxillary elastic bands, inter-dental wear, open NiTi spine, active lip bumper)
• Presence of systemic conditions that could affect tooth movements
• Presence of significant tooth size or shape abnormalities
• History of trauma and history of root resorption or alveolar bone loss.

Sponsors & Collaborators

• Faculty Sao Leopoldo Mandic Campinas: lead

MeSH Terms

Conditions

Crowding

Condition Hierarchy (Ancestors)

Spatial Behavior; Behavior

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: SINGLE
• Who Masked: PARTICIPANT
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: April 9, 2015
• First Posted: April 14, 2015
• Study Start: August 1, 2010
• Primary Completion: April 1, 2011
• Study Completion: October 1, 2011
• Last Updated: April 14, 2015

Record last verified: 2015-04