Alignment Efficiency of Two Thermal Activated Orthodontic Archwire Sequences

April 13, 2015 updated by: Faculty Sao Leopoldo Mandic Campinas

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

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

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

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.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
44

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

15 years to 25 years (Child, Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • 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.

Exclusion Criteria:

  • 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.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: NiTi Af 37ºC
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
Two nickel-titanium alignment and leveling sequences were employed
Other Names:
  • the alignment of mandibular anterior crowding
Experimental: NiTi Af 35ºC
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
Two nickel-titanium alignment and leveling sequences were employed
Other Names:
  • the alignment of mandibular anterior crowding

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
Degree of crowding measured on plaster casts using Little's Irregularity Index
Time Frame: 6 months
6 months

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Time Frame
crowding survival time
Time Frame: six months
six months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Faculty Sao Leopoldo Mandic Campinas

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
August 1, 2010

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
April 1, 2011

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
October 1, 2011

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
April 9, 2015

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 13, 2015

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
April 14, 2015

Study Record Updates

Last Update Posted (Estimate)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
April 14, 2015

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 13, 2015

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
April 1, 2015

More Information

Terms related to this study

Keywords

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • UMA887599

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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