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Tooth Discoloration clinical trials

The registry lists 105 studies for Tooth Discoloration across more than 10 countries. 19 are recruiting or about to start. 86 of them are mainly about Tooth Discoloration (how this is decided). Per ClinicalTrials.gov, last updated 2026-10-21.

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Status

Completed
65
Status unknown
14
Recruiting
8
Not yet recruiting
8
Active, not recruiting
6
Enrolling by invitation
3

Phase

Phase 4
7
Phase 2
2
Phase 3
2
Phase 1
2

Where

Turkey
17
Egypt
15
United States
13
Brazil
8
Spain
5
Jordan
4

Who runs them

Cairo University (19) · Tanta University (4) · University of Chile (4) · Ege University (3) · Boka LLC (3) · Home Skinovations Ltd. (3) · Marmara University (3) · Federal University of Pelotas (3)

What is being tested here

Drugs under test in Tooth Discoloration studies, those with the most open studies first. Medicines only given beside them are not counted. How drugs are counted

DrugOpenPhase 3All
Carbamide Peroxide101
Nicotine002
Sodium Fluoride011
Propolis001
Casein phosphopeptide-amorphous calcium phosphate nanocomplex001
Hydrogen Peroxide001
Nicotine Chewing Gum001

Coming up

0phase 3 studies under way
7studies 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 7

Who these studies take

Of the 8 Tooth Discoloration studies recruiting now, 1 (13%) set no upper age limit and 7 (88%) stop at 75 or younger. 2 (25%) take children under 18. 0 (0%) are for women only and 0 (0%) for men only; 4 (50%) take healthy volunteers.

Recruiting studies that take each age, of 8
AgeWomenMen
100 (0%)0 (0%)
187 (88%)7 (88%)
307 (88%)7 (88%)
406 (75%)6 (75%)
505 (63%)5 (63%)
652 (25%)2 (25%)
751 (13%)1 (13%)
851 (13%)1 (13%)

Across all 105 studies, recruiting or not: 78% stop at 75 or younger and 71% at 65; 14% take children; 0% are for women only and 1% for men only; 76% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.

How long Tooth Discoloration studies take

Of 52 interventional studies with no phase under Tooth Discoloration, half reached primary completion within 8 months of starting, counting those still running.

Start to primary completionEvery sponsorIndustryNon-industry
Interventional, no phase8 mo2–18 · 52 studies—10 mo5–21 · 44 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

What changed recently

From the registry's own updates since Oct 13, 2026.

Newly registered3

Studies

Recruiting first, then most recently updated. Showing 50 of 105. Browse all 105 → or search them.