Dental CrowdingNCT07660146
Validity of Ashley Howe's Analysis for the Prediction of the Extraction Treatment Decision in Orthodontic Patients at the Permanent Dentition Stage
An observational study of Dental Crowding, run by Cairo University at 1 site in Egypt.
Trial summary
This study is to evaluate the validity of Ashley Howe's analysis for the prediction of the extraction treatment decision in orthodontic patients at the permanent dentition stage Read more about this study
- Who is it for?
- Ages 12 years and older
- Conditions the study is for
- Dental Crowding
- What is being tested?
- Ashley Howe's Analysis
- How many people
- 50 participants
- Where
- 1 siteEgypt
- Study dates
- 1 Feb 2026to 1 Feb 2027
- Phase
- Observational
- Are there results?
- Not yet: the study is under way
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 12 years and older
- All sexes
- No healthy volunteers
- Child, Adult, Older adult
Study population: Maxillary models of cases with malocclusion.
Who may be able to join
- Maxillary models of cases with malocclusion.
Who cannot join
- -
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
Egypt1 site, 1 recruiting
- Recruiting
Faculty of Dentistry-Cairo University
Cairo, Giza Governorate, 00202
Mohamed Abd-El-Ghafour, 01007433288, m.abdelghafour@dentistry.cu.edu.eg
About this study
This study is to evaluate the validity of Ashley Howe's analysis for the prediction of the extraction treatment decision in orthodontic patients at the permanent dentition stage
- Conditions
- Dental Crowding
- Being tested
- Ashley Howe's Analysis
- Medical subject headings
- Crowding
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Ashley Howe's AnalysisDiagnostic test
It's a cast analysis method to corelate the amount of tooth material to the size of the basal bone.
What is being measured
The primary outcome is the main question the study is designed to answer.
Value of the Ashly Howe's analysis measured on digital models comapring the basal bone width versus total tooth material.
Measured: Baseline
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted22 Jun 2026
- Study start1 Feb 2026
- Primary completion1 Feb 2027 (estimated)
- Study completion1 Feb 2027 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Dental CrowdingStudies of the same condition, open and under way.
- More trials run by Cairo 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
- Observational
- Observational model
- Case only
- Time perspective
- Cross-sectional
- Enrolment
- 50 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Cairo University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Mohamed Abd El-Ghafour, Cairo University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07660146
- Sponsor's protocol ID
- Ashly Howes Analysis
- Status last verified
- Jun 2026
- First submitted
- 13 Jun 2026
- Last updated
- 22 Jun 2026
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 22 Jun 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Validity of Ashley Howe's Analysis for the Prediction of the Extraction Treatment Decision in Orthodontic Patients at the Permanent Dentition Stage
- ClinicalTrials.gov ID
- NCT07660146
- Acronym / sponsor ID
- Ashly Howes Analysis
- Conditions
- Dental Crowding
- Study type
- Observational
- Recruitment status
- Recruiting
- Enrolment
- 50 participants (estimated)
- Lead sponsor
- Cairo UniversityUniversity, hospital or other
- Study start
- 1 Feb 2026 (actual)
- Primary completion
- 1 Feb 2027 (estimated)
- Study completion
- 1 Feb 2027 (estimated)
- First posted
- 22 Jun 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.
This study is to evaluate the validity of Ashley Howe's analysis for the prediction of the extraction treatment decision in orthodontic patients at the permanent dentition stage
Study design
- Observational model
- Case only
- Time perspective
- Cross-sectional
Who may qualify
- Ages
- 12 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult, Older adult
- Study population
- Maxillary models of cases with malocclusion.
Key inclusion criteria (1 listed)
- Maxillary models of cases with malocclusion.
Key exclusion criteria (1 listed)
- -
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 |
|---|---|---|
| Ashley Howe's AnalysisIt's a cast analysis method to corelate the amount of tooth material to the size of the basal bone. | Diagnostic test | – |
Primary outcome
Value of the Ashly Howe's analysis measured on digital models comapring the basal bone width versus total tooth material.
Time frame: Baseline
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 22 Jun 2026.
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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.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Dental Crowding, run by Cairo 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: looking for participants now, as of the sponsor's last update on 22 Jun 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?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Mohamed Abd-El-Ghafour, PhD (+201007433288, m.abdelghafour@dentistry.cu.edu.eg), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Value of the Ashly Howe's analysis measured on digital models comapring the basal bone width versus total tooth material. (time frame: Baseline). 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 22 Jun 2026.