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Showing 1–24 of 80 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Oral Microbiome Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Mouthwashes on Oral Wound Healing and Microbiome

NCT05270382
View directory record Official record
Conditions
Wound Heal, Oral Microbiome
Interventions
cetylpyridinium chloride
Other
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
18 Years to 45 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 21, 2024 · Synced Sep 5, 2026, 7:01 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Effect of a Stannous Fluoride Toothpaste on the Oral Microbiome

NCT06048809
View directory record Official record
Conditions
Oral Health
Interventions
Stannous Fluoride Toothpaste (Sensodyne Repair and Protect), Regular Fluoride Toothpaste (Colgate Cavity Protection)
Other
Lead sponsor
HALEON
Industry
Eligibility
18 Years to 65 Years
Enrollment
56 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Fort Wayne, Indiana
Source: ClinicalTrials.gov public record
Updated Jul 9, 2025 · Synced Sep 5, 2026, 7:01 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

A Study of Virtually Supervised Mouth Rinses and Flossing

NCT05600231
View directory record Official record
Conditions
Healthy
Interventions
LISTERINE COOL MINT Antiseptic Mouthwash, LISTERINE COOL MINT ZERO Alcohol Mouthwash, Reach Unflavored Waxed Dental Floss, Colgate Cavity Protection Toothpaste
Other
Lead sponsor
Johnson & Johnson Consumer Inc. (J&JCI)
Industry
Eligibility
18 Years and older
Enrollment
284 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Fort Wayne, Indiana
Source: ClinicalTrials.gov public record
Updated Jun 17, 2023 · Synced Sep 5, 2026, 7:01 AM EDT
Completed Not applicable Interventional

The Oral Microbiome in OSCC

NCT04925700
View directory record Official record
Conditions
Oral Cancer
Interventions
ProDentis Lozenge, Placebo Lozenge
Dietary Supplement · Other
Lead sponsor
University of Iowa
Other
Eligibility
21 Years to 89 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Nov 17, 2023 · Synced Sep 5, 2026, 7:01 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Effects of Mouthrinse on the Microbiome of the Oral Cavity and GI Tract

NCT05603650
View directory record Official record
Conditions
Oral Bacterial Infection, Oral Infection, Microbial Colonization, Viral Infection
Interventions
Lumineux Oral Essentials rinse, Listerine rinse
Other
Lead sponsor
University of California, Irvine
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2027
U.S. locations
1
States / cities
Irvine, California
Source: ClinicalTrials.gov public record
Updated Dec 16, 2025 · Synced Sep 5, 2026, 7:01 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effects of Oral Probiotics and Herbal Supplementation on the Gut Microbiome and Sebum Excretion Rate in Non-Cystic Acne

NCT05919810
View directory record Official record
Conditions
Acne Vulgaris, Acneiform Eruptions, Skin Diseases, Sebaceous Gland Diseases
Interventions
Probiotic, Oral herbal powder supplement
Other · Dietary Supplement
Lead sponsor
Integrative Skin Science and Research
Industry
Eligibility
12 Years to 45 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Dec 17, 2024 · Synced Sep 5, 2026, 7:01 AM EDT
Completed Not applicable Interventional Results available

Oral Care Protocol for the Management of Chemotherapy and Radiation Therapy-Induced Oral Mucositis

NCT02608879
View directory record Official record
Conditions
Oral Mucositis, Oral Cancer
Interventions
Oral Mucosa Deterging and Periodontal Debridement (OMDP), Standard of Care Oral Hygiene Instructions, Dental scaling, ultrasonic, Chlorhexidine
Procedure · Other
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years and older
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 27, 2020 · Synced Sep 5, 2026, 7:01 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Pinpoint Trial: Prebiotics IN Peanut Oral ImmunoTherapy

NCT05138757
View directory record Official record
Conditions
Peanut Allergy
Interventions
Prebiotic, Placebo
Drug
Lead sponsor
University of Chicago
Other
Eligibility
4 Years to 17 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
2
States / cities
Chicago, Illinois • Hyde Park, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 8, 2026 · Synced Sep 5, 2026, 7:01 AM EDT
Not yet recruiting Not applicable Interventional

Palatable Elemental Diet for Gastrointestinal Symptoms in Chronic Pancreatitis

NCT07559448
View directory record Official record
Conditions
Chronic Pancreatitis
Interventions
Palatable Elemental Diet
Other
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 75 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Redwood City, California
Source: ClinicalTrials.gov public record
Updated May 26, 2026 · Synced Sep 5, 2026, 7:01 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

A Study of Virtually Supervised Mouthwash and Interdental Brushes

NCT05756673
View directory record Official record
Conditions
Healthy
Interventions
Colgate Cavity Protection Toothpaste, LISTERINE ZERO Alcohol Mouthwash COOL MINT, LISTERINE COOL MINT Antiseptic Mouthwash, TePe Original Interdental Brush
Drug · Device
Lead sponsor
Johnson & Johnson Consumer Inc. (J&JCI)
Industry
Eligibility
18 Years and older
Enrollment
292 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Fort Wayne, Indiana
Source: ClinicalTrials.gov public record
Updated Oct 16, 2023 · Synced Sep 5, 2026, 7:01 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

The Oral Microbiome and Upper Aerodigestive Squamous Cell Cancer

NCT03304132
View directory record Official record
Conditions
Oral Cancer
Interventions
Classification of Oral Microbiome Using 16S rRNA gene sequence-based approach, Classification of Oral Microbiome Using taxonomic approach
Other
Lead sponsor
NYU Langone Health
Other
Eligibility
40 Years to 92 Years
Enrollment
560 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1992 – 2010
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 8, 2017 · Synced Sep 5, 2026, 7:01 AM EDT
Not listed Phase 1Phase 2 Interventional

Safety Evaluation of Fecal Microbiota Transplantation in Severe Alcoholic Hepatitis

NCT05006430
View directory record Official record
Conditions
Alcoholic Hepatitis
Interventions
Fecal Microbiota Transplantation, Placebo
Biological · Other
Lead sponsor
Prasun Kumar Jalal
Other
Eligibility
18 Years to 75 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 22, 2025 · Synced Sep 5, 2026, 7:01 AM EDT
Completed No phase listed Observational

Study of Variation Over Time in the Oral Microbiome

NCT02049398
View directory record Official record
Conditions
Microbiota, Oral Health, Body Mass Index
Interventions
Not listed
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 26, 2020 · Synced Sep 5, 2026, 7:01 AM EDT
Withdrawn Phase 3 Interventional

Lactobacillus Lozenges as Preventative Care in Low-grade Dysplasia

NCT05707702
View directory record Official record
Conditions
Low-grade Oral Dysplasia
Interventions
Probiotic oral lozenges, Standard of care for oral dysplasia
Biological · Other
Lead sponsor
Boston Medical Center
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 30, 2024 · Synced Sep 5, 2026, 7:01 AM EDT
Completed Not applicable Interventional

Oral Probiotic Administration to Modulate the Airway Microbiome in Obese Asthmatic Subjects

NCT03157518
View directory record Official record
Conditions
Asthma
Interventions
Seeking Health Probiota Bifido
Dietary Supplement
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 99 Years
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Jun 19, 2018 · Synced Sep 5, 2026, 7:01 AM EDT
Completed No phase listed Observational

Intestinal Bacteria and Ocular Inflammatory Disease

NCT01859299
View directory record Official record
Conditions
Uveitis
Interventions
Not listed
Lead sponsor
National Eye Institute (NEI)
NIH
Eligibility
18 Years to 120 Years
Enrollment
131 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2013
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 16, 2026 · Synced Sep 5, 2026, 7:01 AM EDT
Withdrawn No phase listed Observational Accepts healthy volunteers

Optimization of Collection Methods for Studies of the Human Microbiota

NCT03731702
View directory record Official record
Conditions
Microbial Composition
Interventions
Not listed
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years to 100 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Rockville, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 27, 2020 · Synced Sep 5, 2026, 7:01 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Oral Pomegranate Extract on the Microbiome and Skin Biophysical Properties

NCT04596722
View directory record Official record
Conditions
Human Microbiome
Interventions
Pomella, Placebo
Dietary Supplement · Other
Lead sponsor
Integrative Skin Science and Research
Industry
Eligibility
25 Years to 55 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Apr 12, 2021 · Synced Sep 5, 2026, 7:01 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Oral Bacteria and Immune System Problems Involved in Gum Disease (Periodontitis)

NCT01568697
View directory record Official record
Conditions
Immunosuppression, Periodontal Disease, Healthy Subjects, Healthy Volunteer
Interventions
Not listed
Lead sponsor
National Institute of Dental and Craniofacial Research (NIDCR)
NIH
Eligibility
7 Years to 100 Years
Enrollment
700 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2012
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 31, 2026 · Synced Sep 5, 2026, 7:01 AM EDT
Not yet recruiting Not applicable Interventional

Efficacy of Different Disinfection Technologies in Molar Non-Surgical Retreatment

NCT07469150
View directory record Official record
Conditions
Apical Periodontitis
Interventions
GentleWave System, Conventional rotary instrumentation with passive ultrasonic irrigation
Procedure
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
16 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2027 – 2030
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Apr 7, 2026 · Synced Sep 5, 2026, 7:01 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Comparison of the Effects of Oral Hygiene Regimens on Clinical, Immunomodulatory, and Microbial Outcomes and Oral Tolerance in People With Gingivitis

NCT07501455
View directory record Official record
Conditions
Microbiome, Cytokines, Plaque, Gingivitis, Gingival Bleeding
Interventions
Distilled Water, Marketed Comparator 1, Marketed Comparator 2, Prototype Rinse 1, Prototype Rinse 2
Other
Lead sponsor
Kenvue Brands LLC
Industry
Eligibility
18 Years to 60 Years
Enrollment
250 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Somerville, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 29, 2026 · Synced Sep 5, 2026, 7:01 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Oral Probiotics on the Shift in Gut Microbiome and Skin Carotenoid Levels

NCT04841694
View directory record Official record
Conditions
Human Microbiome
Interventions
Probiotic
Dietary Supplement
Lead sponsor
Integrative Skin Science and Research
Industry
Eligibility
40 Years and older
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated May 2, 2021 · Synced Sep 5, 2026, 7:01 AM EDT
Completed Early Phase 1 Interventional

Impact of Probiotics on Oral Microbiota in Older Adults With Dysphagia

NCT03682094
View directory record Official record
Conditions
Dysphagia
Interventions
VSL#3
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
65 Years to 99 Years
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated May 15, 2024 · Synced Sep 5, 2026, 7:01 AM EDT
Completed Phase 1 Interventional

Livionex Oral Microbiome and Dental Plaque Control in HSCT Recipients

NCT02617407
View directory record Official record
Conditions
Dental Plaque
Interventions
Livionex® Dental Gel, PreviDent 5000 plus/Tom's of Maine Children's toothpaste, Kolibree Toothbrush
Drug · Device
Lead sponsor
University of California, San Francisco
Other
Eligibility
Not listed
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Sep 22, 2024 · Synced Sep 5, 2026, 7:01 AM EDT