Predicting Orthodontic Extraction Decisions in Permanent Dentition using Ashley Howe’s Analysis
Official title: Validity of Ashley Howe's Analysis for the Prediction of the Extraction Treatment Decision in Orthodontic Patients at the Permanent Dentition Stage
Run by Cairo University · NCT07660146 · Data updated 2026-11-12
This study tests whether Ashley Howe’s analysis can predict if extraction will be chosen for orthodontic patients with dental crowding at the permanent dentition stage.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 12 Years and up |
| Sex | All |
| Enrollment | 50 (estimated) |
| Sponsor | Cairo University Academic / other |
| Locations | 1 site (Cairo, Giza Governorate) |
| Status | Recruiting |
| Started | February 1, 2026 |
| Main results expected | February 1, 2027 |
| Study ends | February 1, 2027 |
| Registry record updated | June 22, 2026 |
| Trial ID | NCT07660146 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are orthodontic patients with dental crowding whose maxillary models are available for analysis.
✕Probably not a fit
Patients for whom the analysis does not predict extraction decisions accurately may not benefit from using this method for planning.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This observational study examines the validity of Ashley Howe’s analysis to predict extraction treatment decisions in orthodontic patients with dental crowding at the permanent dentition stage. It uses maxillary models from cases to compare predicted vs actual treatment choices. The study is conducted at Cairo University’s Faculty of Dentistry and does not specify an interventional treatment. Results could help clinicians understand how well this analytical method forecasts extraction needs.
Why it matters
Potential benefit: If successful, clinicians may have a clearer, model-based way to anticipate extraction decisions during treatment planning.
How similar studies have gone: Previous work in similar analytical approaches has shown varying levels of predictive accuracy; this study explores validity in an orthodontic context.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Maxillary models of cases with malocclusion. Exclusion Criteria: \-
Where it's running
-
Faculty of Dentistry-Cairo University
Cairo, Giza Governorate, Egypt Recruiting
Study contacts
- Study coordinator: Mohamed Abd-El-Ghafour, PhD
- Email: m.abdelghafour@dentistry.cu.edu.eg
- Phone: +201007433288
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.