Skeletal Class III MalocclusionNCT07798791
Randomised Clinical Trial on 30 Class Lll Patients on Two Groups Each Group Consist of 15 Patient to Compare Between Face Mask and Ertty Appliance in Treatment of Skeletal Class Lll Deficient Maxilla.Acone Beam ct to Every Patient Before and After Treatment and a3D Ceph Traced to Every Patient.
A study testing Protraction of maxilla using face mask appliance and Protraction of maxilla using Errty Gap appliance in people with Skeletal Class III Malocclusion, run by Minia University at 1 site in Egypt.
Trial summary
Randomised clinical trial on 30 class lll patients on two groups each group consist of 15 patient to compare between Face mask and Ertty Appliance in Treatment of skeletal class lll Deficient maxilla.acone beam ct to every patient before and after treatment and a3D ceph traced to every patient to compare the skeletal… Read more about this study
- Who is it for?
- Ages 8 to 12 years
- Conditions the study is for
- Skeletal Class III Malocclusion
- What is being tested?
- Protraction of maxilla using face mask appliance and Protraction of maxilla using Errty Gap appliance
- Type of treatment
- Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 30 participants
- Where
- 1 siteEgypt
- Study dates
- 1 Apr 2023to 30 Dec 2024
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 8 to 12 years
- All sexes
- No healthy volunteers
- Child
Who may be able to join
- skeletal class lll patients with Deficient maxilla
Who cannot join
- Free from any medical disease No previous orthodontic treatment
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Comparison Berween Face Mask and Ertty Appliance in Treatment of Growing Patients With Deficient Maxilla
Randomised clinical trial on 30 class lll patients on two groups each group consist of 15 patient to compare between Face mask and Ertty Appliance in Treatment of skeletal class lll Deficient maxilla.acone beam ct to every patient before and after treatment and a3D ceph traced to every patient to compare the skeletal and dental effect of every applliance
- Conditions
- Skeletal Class III Malocclusion
- Being tested
- Protraction of maxilla using face mask appliance, Protraction of maxilla using Errty Gap appliance
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Protraction of maxilla using face mask applianceDevice
Protraction of maxilla using face mask appliance and compare the result with other group
Protraction of maxilla using Errty Gap applianceDevice
Protraction of maxilla using Errty Gap appliance and compare the result with another group
| Study group | Role | What they receive |
|---|---|---|
| Face mask group | Other | Use of face mask appliance to treat skeletal class lll cases Receives: Device: Protraction of maxilla using face mask appliance |
| Errty appliance group | Other | Use of Ertty Appliance to treat skeletal class lll cases Receives: Device: Protraction of maxilla using Errty Gap appliance |
What is being measured
The primary outcome is the main question the study is designed to answer.
Sagital position of maxilla after facemask treatment
Measured: 9 months of treatment
Sagital position of maxilla after Ertty Gap treatment
Measured: 9 months to complete treatment
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted1 Sep 2026
- Study start1 Apr 2023
- Primary completion30 Dec 2024
- Study completion30 Dec 2024
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Skeletal Class III MalocclusionStudies of the same condition, open and under way.
- More trials run by Minia UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Quadruple blind
- Who is masked
- Participant, Care provider, Investigator, Outcomes assessor
- Enrolment
- 30 participants (actual)
Sponsor and investigators
- Lead sponsor
- Minia University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Ahmed Mohamed Ahmed Ali Elbahar, Minia University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07798791
- Sponsor's protocol ID
- Minia U 1989Ahmed
- Status last verified
- Aug 2026
- First submitted
- 27 Jun 2026
- Last updated
- 1 Sep 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes
Study at a glance
From the registry record, last updated by the sponsor on 1 Sep 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Comparison Berween Face Mask and Ertty Appliance in Treatment of Growing Patients With Deficient Maxilla
- ClinicalTrials.gov ID
- NCT07798791
- Acronym / sponsor ID
- Minia U 1989Ahmed
- Conditions
- Skeletal Class III Malocclusion
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 30 participants (actual)
- Lead sponsor
- Minia UniversityUniversity, hospital or other
- Study start
- 1 Apr 2023 (actual)
- Primary completion
- 30 Dec 2024 (actual)
- Study completion
- 30 Dec 2024 (actual)
- First posted
- 1 Sep 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Randomised clinical trial on 30 class lll patients on two groups each group consist of 15 patient to compare between Face mask and Ertty Appliance in Treatment of skeletal class lll Deficient maxilla.acone beam ct to every patient before and after treatment and a3D ceph traced to every patient to compare the skeletal and dental effect of every applliance
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Quadruple blind (participant, care provider, investigator, outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Face mask group | Other | Device: Protraction of maxilla using face mask applianceUse of face mask appliance to treat skeletal class lll cases |
| Errty appliance group | Other | Device: Protraction of maxilla using Errty Gap applianceUse of Ertty Appliance to treat skeletal class lll cases |
Who may qualify
- Ages
- 8 to 12 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child
Key inclusion criteria (1 listed)
- skeletal class lll patients with Deficient maxilla
Key exclusion criteria (1 listed)
- Free from any medical disease No previous orthodontic treatment
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Protraction of maxilla using face mask applianceProtraction of maxilla using face mask appliance and compare the result with other group | Device | Face mask group |
| Protraction of maxilla using Errty Gap applianceProtraction of maxilla using Errty Gap appliance and compare the result with another group | Device | Errty appliance group |
Primary outcome
Sagital position of maxilla after facemask treatment
Time frame: 9 months of treatment
Sagital position of maxilla after Ertty Gap treatment
Time frame: 9 months to complete treatment
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 1 Sep 2026.
- Individual participant dataSharing planned: Yes
Related trials for Skeletal Class III Malocclusion
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Effects of Invisalign Palatal Expander vs Rapid Palatal Expander With Facemask in Growing Class III Patients
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Protraction of maxilla using face mask appliance and Protraction of maxilla using Errty Gap appliance in people with Skeletal Class III Malocclusion, run by Minia University at 1 site in Egypt.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 1 Sep 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Egypt. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Sagital position of maxilla after facemask treatment (time frame: 9 months of treatment). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 1 Sep 2026.