Crowding Clinical Trials

12 recruitingLast updated: May 11, 2026

There are 12 actively recruiting crowding clinical trials across 10 countries. Studies span Not Applicable. Top locations include Chevy Chase, Maryland, United States, Coppito, Italy, Farmington, Connecticut, United States. Updated daily from ClinicalTrials.gov.


Crowding Trials at a Glance

12 actively recruiting trials for crowding are listed on ClinicalTrialsFinder across 6 cities in 10 countries. The largest study group is Not Applicable with 9 trials, with the heaviest enrollment activity in Chevy Chase, Coppito, and Farmington. Lead sponsors running crowding studies include Donald Nixdorf, Hama University, and Align Technology, Inc..

Browse crowding trials by phase

About Crowding Clinical Trials

Looking for clinical trials for Crowding? There are currently 1 studies actively recruiting participants. Clinical trials offer access to new treatments before they are widely available, and every approved therapy in use today was first tested through a clinical trial.

Below you can browse trials, sign up for alerts when new Crowding trials open, and view eligibility criteria for each study. Each listing includes the study phase, locations, and enrollment details.

Frequently Asked Questions

Common questions about Crowding clinical trials

A clinical trial is a carefully designed research study that tests new medical treatments, drugs, devices, or approaches in human volunteers. Every approved medication and treatment available today was proven safe and effective through clinical trials.

All clinical trials are reviewed and approved by Institutional Review Boards (IRBs) — independent committees that evaluate patient safety. Trials follow strict protocols, and your health is monitored closely throughout. You can withdraw at any time.

Not necessarily. Many trials compare the new treatment against the current standard of care, meaning all participants receive active treatment. When placebos are used, they are typically combined with standard treatment, not given alone. The trial description will always specify the design.

Under the Affordable Care Act, most private insurers are required to cover routine patient care costs during a clinical trial. The sponsor typically covers the investigational treatment itself. Medicare also covers routine costs for qualifying trials.

Yes. Participation is completely voluntary. You can withdraw at any time, for any reason, without it affecting your access to standard medical care.

Each trial has specific eligibility criteria — including age, diagnosis, disease stage, prior treatments, and general health. Browse the trials listed above and check their eligibility sections. You can also contact the trial site directly to discuss your situation.

Showing 112 of 12 trials

Recruiting
Not Applicable

Evaluating the Efficacy of Micro-Osteoperforations Technique on the Orthodontic Tooth Movement Acceleration in Moderate Mandibular Anterior Crowding Cases Treated With Clear Aligners

Crowding of Anterior Mandibular Teeth
Hama University30 enrolled1 locationNCT05492773
Recruiting
Not Applicable

Impact of Point-of-care Lactate Testing as Triage Supplement on Patient Management Using Manchester Triage System

Emergency Department overcrowdingEmergency department triageEmergency Medicine+1 more
University Medical Centre Maribor200 enrolled1 locationNCT07123857
Recruiting
Not Applicable

Evaluating the Clinical Efficacy of Collagen Scaffold (Ossix VOLUMAX) With Piezo-Surgical Decortication in Enhancing Orthodontic Treatment Outcomes: A Randomized Controlled Trial

Dental CrowdingGingival RecessionThin Phenotype
NMSI DENTMASTER70 enrolled1 locationNCT07097714
Recruiting
Not Applicable

Interceptive Maxillary Expansion to Relief Anterior Crowding in the Mixed Dentition

Crowding of Anterior Maxillary TeethOrthodontics, InterceptiveOrthodontics, Corrective, Palatal Expansion Technique
Region Örebro County60 enrolled4 locationsNCT06187337
Recruiting

Exploration of the Utility of Dental-dedicated MRI for Dentistry

orthodonticsDental CrowdingEndodontic Disease+5 more
Donald Nixdorf300 enrolled1 locationNCT06948162
Recruiting
Not Applicable

Treatment Result of Zirconia Laminate Veneer

Tooth crowdingTooth InjuriesTooth Fracture+4 more
Hanoi Medical University50 enrolled1 locationNCT06406582
Recruiting
Not Applicable

Efficacy and Effectiveness of Two Types of Aligners Based on Stratification by Type of Movement

Crowding, ToothTipped Tooth or TeethRotation of Tooth+1 more
Universidad Complutense de Madrid114 enrolled1 locationNCT06516185
Recruiting
Not Applicable

Hyrax Vs. Invisalign Palatal Expander Clinical Study

MalocclusionsNarrow MaxillaNarrow Maxillary Arch+1 more
Align Technology, Inc.36 enrolled4 locationsNCT06662279
Recruiting
Not Applicable

Effect of Force Magnitude on Canine Retraction and Gingival Crevicular Fluid Proteome

Tooth crowding
UConn Health40 enrolled1 locationNCT06668194
Recruiting

A comparison of LightForce vs conventional orthodontic brackets in initial lower arch alignment efficiency and discomfort: a randomised clinical trial

Dental Crowding
The University of Queensland60 enrolled1 locationACTRN12624001211550
Recruiting
Not Applicable

Teeth Decrowding With and Without Fixed Appliances

Tooth crowding
Samer Mheissen40 enrolled1 locationNCT06416189
Recruiting

The effect or LLLT (low level laser therapy) on repair of root resorption undergoing bilateral first pre-molar extraction.

Root resorption (related to orthodontic treatment)Tooth crowding
Sydney University20 enrolled1 locationACTRN12616000682448