Comparison Between Two Rates of Activation of Miniscrew-Supported Upper Jaw Expander in Adolescents

June 18, 2021 updated by: Yomna Mohamed Mohamed Yacout, Alexandria University

Comparison Between Two Activation Protocols of Miniscrew-Supported Maxillary Expander in Adolescents: A Randomized Controlled Clinical Trial

Miniscrew-supported maxillary expanders provide advantages over conventional tooth-supported expanders. However, there is no consensus in the literature regarding their activation protocol. The purpose of the clinical trial is to evaluate and compare the effects of slow and rapid activation rates of miniscrew-supported expanders on the skeletal changes, dento-alveolar changes and the pain experience.

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

Transverse maxillary deficiency is one of the problems that are commonly encountered in the orthodontic practice. Miniscrew-supported maxillary expansion represents a promising modality for the treatment of transverse maxillary deficiency. However, controversies still exist regarding the activation protocol. One of these controversies is whether using a slow activation protocol would be more beneficial to the patients compared to a rapid activation protocol. Another question that consequently ensues is whether such activation protocol would result in less pain compared to the rapid activation protocol.

The null hypothesis of the current study is that there is no difference between slow and rapid activation protocols of miniscrew-supported expander.

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.
30

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

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Egypt
      • Alexandria, Egypt
        • Faculty of Dentistry, Alexandria University

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

12 years to 16 years (CHILD)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Permanent dentition.
  • Participants indicated for skeletal maxillary expansion due to unilateral or bilateral posterior cross bite or maxillary transverse deficiency
  • Good oral hygiene

Exclusion Criteria:

  • History of previous orthodontic or orthopedic treatment
  • History of maxillary trauma
  • Patients with congenital craniofacial malformations
  • Patients receiving pharmacological agents or having systemic diseases that might affect the bone metabolism or the pain response

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
  • 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: Slow maxillary expansion
The miniscrew-supported maxillary expander is activated by turning the expansion screw once every other day.
Device: Miniscrew-Supported Maxillary Expander- Slow activation
A maxillary expander is supported on 4 palatal miniscrews. The appliance is activated slowly by turning the expansion screw once every other day to correct the transverse maxillary deficiency.
EXPERIMENTAL: Rapid maxillary expansion
The miniscrew-supported maxillary expander is activated by turning the expansion screw twice daily.
Device: Miniscrew-Supported Maxillary Expander- Rapid activation
A maxillary expander is supported on 4 palatal miniscrews. The appliance is activated rapidly by turning the expansion screw twice per day to correct the transverse maxillary deficiency.

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
Measure Description
Time Frame
Transverse skeletal changes from baseline to an average of 5 months after the initial activation, measured using cone beam computed tomography (CBCT)
Time Frame: At baseline and an average of 5 months after the initial activation
The data from CBCT scans at the different time points will be exported in Digital Imaging and Communications in Medicine (DICOM) format and processed using suitable software. The relevant landmarks will be defined and located by the investigator to measure the transverse skeletal changes in mm from baseline to the end of passive retention of the expansion.
At baseline and an average of 5 months after the initial activation
Dento-alveolar inclination changes from baseline to an average of 5 months after the initial activation, measured using CBCT
Time Frame: At baseline and an average of 5 months after the initial activation
The data from CBCT scans at the different time points will be exported in DICOM format and processed using suitable software. The relevant landmarks will be defined and located by the investigator to measure the changes in dento-alveolar inclination from baseline to the end of passive retention of the expansion.
At baseline and an average of 5 months after the initial activation

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
Measure Description
Time Frame
Pain score on Numeric Rating Scale (NRS) at baseline
Time Frame: Baseline
Measures pain and how it affects the daily activities on a NRS where each respondent selects a whole number, between 0 and 10, with 0 being the lowest extreme and 10 being the highest extreme.
Baseline
Pain score on NRS after the first activation of the maxillary expander
Time Frame: On day 1 after the first activation of the maxillary expander
Measures pain and how it affects the daily activities on a NRS where each respondent selects a whole number, between 0 and 10, with 0 being the lowest extreme and 10 being the highest extreme.
On day 1 after the first activation of the maxillary expander
Pain score on NRS after 1 week of activation of the maxillary expander
Time Frame: After 1 week of activation of the maxillary expander
Measures pain and how it affects the daily activities on a NRS where each respondent selects a whole number, between 0 and 10, with 0 being the lowest extreme and 10 being the highest extreme.
After 1 week of activation of the maxillary expander
Pain score on NRS after the last activation of the maxillary expander
Time Frame: At the end of active expansion (an estimated average of 2 to 3 weeks in the rapid expansion group, and 7 to 12 weeks in the slow expansion group)
Measures pain and how it affects the daily activities on a NRS where each respondent selects a whole number, between 0 and 10, with 0 being the lowest extreme and 10 being the highest extreme.
At the end of active expansion (an estimated average of 2 to 3 weeks in the rapid expansion group, and 7 to 12 weeks in the slow expansion group)

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.
Alexandria University

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Yomna M Yacout, BDS, MSc, Alexandria University
  • Study Chair: Nadia M El Harouni, BDS,MSc,PhD, Alexandria University
  • Study Chair: Essam M Abdallah, BDS,MSc,PhD, Alexandria University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Helpful Links

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 (ACTUAL)

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.
March 1, 2019

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 28, 2021

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.
June 1, 2021

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).
January 5, 2020

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.
January 9, 2020

First Posted (ACTUAL)

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.
January 13, 2020

Study Record Updates

Last Update Posted (ACTUAL)

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.
June 21, 2021

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.
June 18, 2021

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.
June 1, 2021

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

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.
  • 01012019

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

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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Conditions

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