Comparing two methods for making clear orthodontic aligners in crowded teeth cases

Difference Between Pressing and Vacuum Techniques in Fabrication of Orthodontic Aligners in Cases With Crowding: A Cross-sectional Study

Observational Cairo University · NCT06231888

This study is testing which method works better for making clear orthodontic aligners for people with crowded teeth.

Quick facts

Study typeObservational
Enrollment100 (estimated)
SexAll
SponsorCairo University Academic / other
Locations1 site (Cairo)
Trial IDNCT06231888 on ClinicalTrials.gov

What this trial studies

This observational study aims to compare two different techniques for fabricating clear orthodontic aligners specifically in patients with crowding in the maxillary arch. The study will assess the effectiveness and outcomes of pressing versus vacuum techniques in creating these aligners. By analyzing the results, the study seeks to determine which method yields better results for patients requiring orthodontic treatment. The research will be conducted at the Faculty of Dentistry at Cairo University.

Who should consider this trial

Good fit: Ideal candidates for this study are individuals with a maxillary arch exhibiting crowding and who have full permanent dentition.

Not a fit: Patients with missing teeth or dental restorations may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to improved fabrication techniques for orthodontic aligners, enhancing treatment outcomes for patients with crowded teeth.

How similar studies have performed: While there may be studies on aligner fabrication techniques, this specific comparison of pressing versus vacuum methods is relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Maxillary arch with crowding.
* Full permanent dentition.

Exclusion Criteria:

* Missing teeth.
* Dental restorations.

Where this trial is running

Cairo

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Orthodontic Aligners
Last reviewed 2026-06-09 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.