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Periodontal Diseases clinical trials

The registry lists 867 studies for Periodontal Diseases across more than 10 countries. 189 are recruiting or about to start. 406 of them are mainly about Periodontal Diseases (how this is decided). Per ClinicalTrials.gov, last updated 2026-11-12. Counting its 16 narrower conditions too, such as Periodontitis: 4,096 studies, 868 open.

ClinicalTrials.gov finds 4,112 studies for Periodontal Diseases. How that becomes 866 here

This page counts the studies the registry files under Periodontal Diseases, and those it files under no condition that list Periodontal Diseasesthemselves. Each study its search finds is placed by how the registry filed it and by the conditions it lists. ClinicalTrials.gov counts as of Nov 8, 2026. How condition pages count

  1. 4,112Found by its condition searchIt reads the conditions a study lists and their synonyms, and also titles and keywords.
  2. −3,093Filed under a narrower condition, counted on its own pagePeriodontitis 942 · Gingivitis 415 · Gingival Recession 394 · Peri-Implantitis 277 · Alveolar Bone Loss 246 · Chronic Periodontitis 242 · 10 more
  3. −11List Periodontal Diseases as a condition, but the registry did not file them under itMost often written as “Diabetes Mellitus With Periodontal Disease” (3), “Periodontal Diseases Inflammation” (2), and “Patients With Periodontal Disease” (1). The registry filed 9 of them under no condition at all, and the others under other conditions only, most often Malocclusion, Angle Class I (1) and Diabetes Mellitus, Type 2 (1).
  4. −142Match it another way8 name it in the title and 134 by a synonym or other text the search reads.
  5. 866The count on this page

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Status

Completed
533
Recruiting
101
Status unknown
96
Not yet recruiting
72
Active, not recruiting
32
Enrolling by invitation
16

Phase

Phase 4
48
Phase 3
36
Phase 2
33
Phase 1
14
Early Phase 1
11

Where

Turkey
157
United States
91
Italy
72
Egypt
66
Brazil
64
Spain
26

Who runs them

University of Sao Paulo (23) · Cairo University (17) · University of Pavia (13) · Izmir Katip Celebi University (11) · Necmettin Erbakan University (11) · Abant Izzet Baysal University (10) · Saglik Bilimleri Universitesi (10) · Ain Shams University (10)

What is being tested here

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

DrugOpenPhase 3All
Chlorhexidine3414
Tin Fluorides202
Cetylpyridinium113
Toothpaste102
Omega-3 fatty acid102
P-prf112
Zinc lactate101
Isotretinoin101
Thioctic Acid101
Aspirin101

Coming up

3phase 3 studies under way
57studies 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.

The 10 nearest

Who these studies take

Of the 101 Periodontal Diseases studies recruiting now, 47 (47%) set no upper age limit and 42 (42%) stop at 75 or younger. 5 (5%) take children under 18. 6 (6%) are for women only and 0 (0%) for men only; 58 (57%) take healthy volunteers.

Recruiting studies that take each age, of 101
AgeWomenMen
103 (3%)2 (2%)
1873 (72%)67 (66%)
3091 (90%)85 (84%)
4095 (94%)89 (88%)
5091 (90%)88 (87%)
6582 (81%)79 (78%)
7563 (62%)60 (59%)
8552 (51%)49 (49%)

Across all 867 studies, recruiting or not: 55% stop at 75 or younger and 43% at 65; 10% take children; 6% are for women only and 1% for men only; 58% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.

How long Periodontal Diseases studies take

Of 24 phase 4 interventional studies under Periodontal Diseases, half reached primary completion within 17 months of starting, counting those still running.

Start to primary completionEvery sponsorIndustryNon-industry
Phase 19 mo6–17 · 14 studies——
Phase 36 mo2–23 · 19 studies——
Phase 417 mo10–45 · 24 studies——
Interventional, no phase13 mo8–27 · 331 studies—13 mo8–27 · 312 studies
Observational13 mo7–32 · 83 studies—13 mo7–30 · 79 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 14, 2026.

Started recruiting1

Newly registered10

Show 5 more

Studies

Recruiting first, then most recently updated. Showing 50 of 867. Browse all 867 → or search them.