Clinical trials: Oral Microbiome
Reproductive Health
Anti-Inflammatory Diet and Physical Activity for Reproductive Health in Adolescent Girls
This study will evaluate whether a 16-week anti-inflammatory dietary intervention, delivered alone or together with a physical activity programme, can improve diet quality and support reproductive health in girls aged 14-19…
- Trial name
- 4fertil (NCT07834489)
- Testing
- Anti-Inflammatory Dietary Intervention, Physical Activity and Training Programme
- Where
- 2 sites in Poland
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Poznan University of Physical Education
Iron Deficiency
Improving Iron Levels in Female Endurance, Intermittent, and Power/Strength Athletes Aged 16-35
The goal of this clinical trial is to learn if different types and doses of oral iron supplements can improve iron levels, athletic performance, and gut health in young female athletes with low iron stores.
- Trial name
- FeSc2 (NCT06942208)
- Testing
- Low-dose iron (ferrous sulfate), Yeast-bound iron (ferrous sulfate), High-dose iron (ferrous sulfate)
- Where
- Canada
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- University of Calgary
Dental Caries
Does Administration of Probiotics During Infancy Increase the Caries Risk of a Child
Aim: to examine caries occurrence in children who ten years ago received a mixture of probiotics during infancy. Hypothesis: the administration of probiotics during infancy has no effect on future dental health.
- Trial name
- NCT01424852
- Testing
- Probiotics in infant milk formula
- Where
- Finland
- Volunteers
- healthy volunteers welcome
- Sponsor
- University of Turku
Generalized Aggressive Periodontitis
Metagenomic and Immune-inflammatory Analysis of Individuals With Generalized Aggressive Periodontitis and Their Descendants.
Generalized aggressive periodontitis (GAgP) is a multifactorial disease related to several aspects that influence its installation and progression.
- Trial name
- NCT03933514
- Testing
- Plaque control
- Volunteers
- 66 people, healthy volunteers welcome
- Sponsor
- University of Campinas, Brazil
Acne Vulgaris
The Efficacy of an Oral Probiotic Associated With a Fixed Combination of Benzoyl Peroxide and Adapalene in the Treatment of Acne
Objective: Clinical trial carried out to evaluate the superiority of efficacy of a treatment regimen with an oral probiotic associated with a fixed combination of 0.1% adapalene and 2.5% benzoyl peroxide compared to an oral…
- Trial name
- NCT05216289
- Testing
- Probiac
- Where
- Brazil
- Volunteers
- 400 people, healthy volunteers welcome
- Sponsor
- Federal University of São Paulo
Nutrition, Healthy
Effect of Dietary Supplements on the Oral Microbiome
The oral cavity's microbiome is a diverse community, hosting over 700 bacterial species. Due to its varied niches, the oral cavity constitutes a highly complex environment where different microbes preferentially colonize distinct…
- Trial name
- NCT06411977
- Testing
- Vegetable juice
- Where
- 2 sites in Germany, Switzerland
- Volunteers
- 22 people, healthy volunteers welcome
- Sponsor
- University Center of Dental Medicine Switzerland
Periodontitis, Kidney Transplant Recipients
Diode Laser-Assisted Periodontal Therapy in Kidney Transplant Recipients
This randomized controlled trial evaluates the efficacy of diode laser-assisted non-surgical periodontal therapy in kidney transplant recipients with periodontitis.
- Trial name
- KTRs (NCT07532694)
- Testing
- Scaling and Root Planing, Diode Laser
- Where
- 2 sites in Vietnam
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Military Hospital 103
Acne Vulgaris, Acneiform Eruptions
The Effects of Oral Probiotics and Herbal Supplementation on the Gut Microbiome and Sebum Excretion Rate in Non-Cystic Acne
The purpose of this study is to evaluates how probiotics and dietary supplementation with an herbal powder can shift the gut microbiome in those with non-cystic acne vulgaris.
- Conditions
- Acne Vulgaris, Acneiform Eruptions, Skin Diseases, Sebaceous Gland Diseases
- Trial name
- NCT05919810
- Testing
- Probiotic, Oral herbal powder supplement
- Where
- United States
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- Integrative Skin Science and Research
Primary Hypertension
Dietary Nitrate and the Oral Microbiome in Children With Primary Hypertension
Children and adolescents with primary hypertension (high blood pressure without an underlying secondary cause) are at increased risk of cardiovascular disease in adulthood.
- Trial name
- NCT07236125
- Testing
- No active intervention
- Where
- Turkey (Türkiye)
- Volunteers
- 48 people, healthy volunteers welcome
- Sponsor
- Yelda Kasımoğlu
Mouth Breathing, Oral Microbiota
Effect of Pranayamic Breathing and Tongue Exercises on Oral Microbiota in Children
This study aims to evaluate the effects of pranayamic breathing techniques and tongue exercises on oral microbiota in children aged 7-12 years.
- Trial name
- PM26 (NCT07755111)
- Testing
- Pranayamic Breathing and Tongue Exercises
- Where
- Turkey (Türkiye)
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Gulcin Ozsen
Sjogren's Syndrome
Sjogren's Mini-Pill Oral and Gut Microbiome Study
The goal of this observational study is to characterize and compare region-specific gastrointestinal, stool, oral, and periodontal microbiomes in adults with Sjögren's disease and healthy controls using ingestible mini-pill…
- Trial name
- NCT07732582
- Testing
- Mini-Pill
- Where
- United States
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- Tufts University
Dental Caries, Periodontitis
Breaking the Cycle: Real-Time Family Oral Microbial Transmission Patterns as Intervention Targets
This study aims to understand how oral bacteria that cause tooth decay and gum disease spread among family members and whether treating multiple family members can reduce the return of these bacteria after dental treatment.
- Conditions
- Dental Caries, Periodontitis, Oral Microbiome, Bacterial Transmission
- Trial name
- NCT07674888
- Testing
- Professional Dental Plaque Disruption
- Where
- Canada
- Volunteers
- 225 people, healthy volunteers welcome
- Sponsor
- University of Alberta
Dental Caries, White Spot Lesion
A Randomized Controlled Trial of Vitamin D Supplementation on Salivary Biomarkers and Cariogenic Oral Microbiome
The goal of this clinical trial is to compare the treatment effect of vitamin D supplementation and topical fluorides in the population having vitamin D deficiency and Initial Carious Lesions (ICL) on the progression of ICL in…
- Conditions
- Dental Caries, White Spot Lesion, Initial Caries, Incipient Enamel Caries
- Trial name
- Incipient (NCT06172764)
- Testing
- Vitamin D supplements along with behavioral modification, Topical fluoride application and Vitamin D supplements along with behavioral modification, Topical fluoride application along with behavioral modification
- Where
- Pakistan
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- Dow University of Health Sciences
Gingivitis, Orthodontic Appliance Complication
Influence of Probiotics on Clinical Parameters, the Oral Microbiome and the Immune System During an Orthodontic Treatment
Orthodontic treatment with fixed appliances can be necessary to correct malocclusions in adolescence or adulthood. It its known that orthodontic treatment induces aseptic pseudo-inflammatory reactions.
- Trial name
- NCT04598633
- Testing
- Lactobacillus reuteri Prodentis®-lozenges (DSM 17938, ATCC PTA 5289)
- Where
- Germany
- Volunteers
- 34 people, healthy volunteers welcome
- Sponsor
- University of Erlangen-Nürnberg
Acne Vulgaris
Oral Probiotics on the Microbiome and Lipidome in Acne Vulgaris
The purpose of this study is to determine how probiotics affect sebum production and gut health in those with acne vulgaris.
- Trial name
- NCT04596748
- Testing
- Probiotic
- Where
- United States
- Volunteers
- 70 people, healthy volunteers welcome
- Sponsor
- Integrative Skin Science and Research
Childhood Mortality
Mortality Reduction After Oral Azithromycin: Morbidity Study
The long-term goal of this study is to more precisely define the role of mass azithromycin treatments as an intervention for reducing childhood morbidity and increasing growth, and for the potential selection of antibiotic…
- Trial name
- MORDORMorb (NCT02048007)
- Testing
- Azithromycin
- Where
- 6 sites in United States, Malawi and 3 more
- Volunteers
- 72,000 people, healthy volunteers welcome
- Sponsor
- University of California, San Francisco
Nutrition, Healthy, Adolescent Behavior
Effect of Nutritional Habits on Oral Microbiota in Adolescents
The aim of this study is to examine the relationship between oral microbiota and eating habits, sleep quality and hedonic hunger in adolescents.
- Conditions
- Nutrition, Healthy, Adolescent Behavior, Microbial Colonization
- Trial name
- NCT06425328
- Where
- Turkey (Türkiye)
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- TC Erciyes University
Orthodontics, White Spot Lesions [Initial Caries] on Smooth Surface of Tooth
Orthodontic Treatment on Oral Microbiota and Salivary Proteins
Study on the changes in oral microbiota during orthodontic treatment in patients aged 8-18 years. Orthodontic patients treated at Stomatology Hospital of Xi'an Jiaotong University from March 2025 to March 2027 will be recruited.
- Conditions
- Orthodontics, White Spot Lesions [Initial Caries] on Smooth Surface of Tooth, Caries, Dental
- Trial name
- NCT06824493
- Testing
- no interventions, No Intervention: Observational Cohort
- Where
- China
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- Xi'an Jiaotong University
Immunosuppression, Periodontal Disease
Oral Bacteria and Immune System Problems Involved in Gum Disease (Periodontitis)
Background: Gum disease is a condition in which the tissue around the tooth root becomes swollen and infected. This condition can cause tooth loss if it is not treated.
- Conditions
- Immunosuppression, Periodontal Disease, Healthy Subjects, Healthy Volunteer
- Trial name
- NCT01568697
- Where
- United States
- Volunteers
- 700 people, healthy volunteers welcome
- Sponsor
- National Institute of Dental and Craniofacial Research (NIDCR)
Tooth Decay, Probiotics
Effects of Probiotics on Streptococcus Mutans ve Lactobacillus Spp
To evaluate the change of S. mutans and Lactobacillus spp. counts after all dental treatments were completed under general anesthesia and compare the groups in case of using probiotics and not using probiotics with the time for…
- Conditions
- Tooth Decay, Probiotics, Streptococcus Mutans
- Trial name
- NCT05859646
- Testing
- Probiotic use
- Where
- Turkey (Türkiye)
- Volunteers
- 58 people, healthy volunteers welcome
- Sponsor
- Didem Sakaryali Uyar