Malocclusion, Angle Class I clinical trials

The registry lists 35 studies for Malocclusion, Angle Class I across more than 10 countries. 10 are recruiting or about to start. 30 of them are mainly about Malocclusion, Angle Class I (how this is decided). Per ClinicalTrials.gov, last updated 2026-09-15.

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Status

Completed: 18
Recruiting: 5
Status unknown: 4
Active, not recruiting: 3
Not yet recruiting: 3
Enrolling by invitation: 2

Phase

Phase 4: 1

Where

Egypt: 7
Vietnam: 5
Syrian Arab Republic: 3
United States: 3
Iraq: 3
Turkey: 3

Who runs them

Can Tho University of Medicine and Pharmacy (5) · Damascus University (3) · University of Baghdad (3) · Al-Azhar University (2) · Future University in Egypt (2) · State University of New York at Buffalo (2) · University Hospital, Geneva (1) · Ben Hafeed Dental Center (1)

Coming up

0phase 3 studies under way

4studies finish main data collection within a year

Studies recruiting or running, from their records. “Main data collection” ends at the primary completion date, the sponsor’s own estimate, which often moves.

All 4

Nov 2026Treatment Outcome of Elastomeric and Nickel-Titanium Separators in Tooth Separation · 3D-Aligners
Feb 2027LLLLT vs Piezocision in Accelerating Orthodontic Canine Retraction · Hesham Nabil Ali Al-Qamhawy
Apr 2027The Predictability of Directly Printed Versus Thermoformed Clear Aligners · University of Baghdad
Sep 2027Clinical Performance of Direct-Printed Versus Thermoformed Aligners · University of Baghdad

Who these studies take

Of the 5 Malocclusion, Angle Class I studies recruiting now, 0 (0%) set no upper age limit and 5 (100%) stop at 75 or younger. 4 (80%) take children under 18. 0 (0%) are for women only and 0 (0%) for men only; 2 (40%) take healthy volunteers.

Recruiting studies that take each age, of 5
Age	Women	Men
10	0 (0%)	0 (0%)
18	5 (100%)	5 (100%)
30	2 (40%)	2 (40%)
40	0 (0%)	0 (0%)
50	0 (0%)	0 (0%)
65	0 (0%)	0 (0%)
75	0 (0%)	0 (0%)
85	0 (0%)	0 (0%)

Across all 35 studies, recruiting or not: 74% stop at 75 or younger and 74% at 65; 69% take children; 3% are for women only and 0% for men only; 43% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.

How long Malocclusion, Angle Class I studies take

Of 23 interventional studies with no phase under Malocclusion, Angle Class I, half reached primary completion within 21 months of starting, counting those still running.

Start to primary completion	Every sponsor	Industry	Non-industry
Interventional, no phase	21 mo15–24 · 23 studies	—	—

Each figure is the month by which half the studies had reached primary completion, with the range in which the middle half did. Studies still running count until their last registry update; studies that stopped early are left out. Phase 1 includes early phase 1; observational means prospective or not stated, as retrospective and cross-sectional studies date a window of data rather than a study. How these figures are worked out

Studies

Recruiting first, then most recently updated. Showing 35 of 35. search them.