Clinical trials: Oral Microbiome
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, Oral Bacterial Infection
Ecological Effect of Arginine Dentifrice on Oral Microbiota
caries-free (CF) individuals caries-active (CA) individuals (DMFT ≥ 6) will be recruited. Subjects will be instructed to brush their teeth twice daily for 3 min using Colgate® Sensitive Pro-Relief® toothpaste (containing 8%…
- Conditions
- Dental Caries, Oral Bacterial Infection, Microbiota
- Trial name
- NCT02988349
- Testing
- Colgate® Sensitive Pro-Relief® toothpaste
- Volunteers
- 42 people, healthy volunteers welcome
- Sponsor
- Sichuan University
Autism Spectrum Disorder, Microbiota
Gut-oral Axis Microbiome in Autism Spectrum Disorders
Autism Spectrum Disorder (ASD) is a neurodevelopment disorder characterized by impairment in social interaction, communication, and behavior, as well as sensory challenges.
- Trial name
- NCT05830591
- Testing
- Characterization of the microbiome in oral and fecal samples
- Where
- Italy
- Volunteers
- 86 people
- Sponsor
- IRCCS Burlo Garofolo
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
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
Periodontal Health, Gingivitis
Effect of Probiotics on the Periodontal Status of Orthodontic Patients
Gingival inflammation (gingivitis) is commonly reported in teenagers with fixed orthodontic devices (FOD). Indeed, FODs promote the accumulation of plaque and interfere with the efficacy of tooth brushing.
- Trial name
- POP (NCT04634201)
- Testing
- Oral probiotics (L. reuteri)
- Where
- France
- Volunteers
- 3 people
- Sponsor
- University Hospital, Lille
Oral Bacterial Colonization, Oral Hygiene
Effects of Three Oral Hygiene Protocols on Oral Bacteria in Intensive Care Patients
Patients in intensive care may develop changes in the bacteria found in their mouths. Some of these bacteria can cause infections, and patients who cannot clean their own teeth depend on staff to provide oral care.
- Trial name
- NCT07868549
- Testing
- Mechanical Oral Hygiene, Chlorhexidine, Hexetidine
- Where
- Croatia
- Volunteers
- 86 people
- Sponsor
- University of Zagreb
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
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
Anorexia Nervosa
Fecal Microbiota Transplantation in Females With Anorexia Nervosa
The goal of this clinical trial is to learn whether fecal microbiota transplantation (FMT) can change the gut microbiome and improve health outcomes in females with anorexia nervosa.
- Trial name
- AN-SHIFT (NCT07877675)
- Testing
- Fecal Microbiota Transplantation Capsule
- Where
- 2 sites in Denmark
- Volunteers
- 60 people
- Sponsor
- Andreas Munk Petersen
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)
Esophageal Atresia
Esophageal Atresia: a Natural Experiment of the Effects of Oral Inoculation on the Gut Microbiome
The purpose of this study is to understand changes of the gut microbiome due to esophageal atresia. The intervention will be to give a patient his or her own saliva through their gastrostomy tube (directly into the stomach) to…
- Trial name
- NCT04901546
- Testing
- Patient's own saliva
- Where
- United States
- Volunteers
- 52 people
- Sponsor
- Stanford University
Early Childhood Caries
A Clinical Trial of Silver Diamine Fluoride to Arrest Early Childhood Caries in Young Children
Silver diamine fluoride (SDF) is an antibiotic liquid that has the potential to arrest Early Childhood Caries in young children and delay treatment until children can be seen in outpatient settings.
- Trial name
- NCT04054635
- Testing
- Silver diamine fluoride
- Where
- Canada
- Volunteers
- 84 people
- Sponsor
- University of Manitoba
Inflammatory Bowel Disease (IBD)
Omics-driven Research on the Gut-Oral Microbiome, Metabolome, Lifestyle, and Clinical Integration in Korean Inflammatory Bowel Disease
The inflammatory bowel disease (IBD) is a condition that afflects approximately 5 million people worldwide, with 1.4 million in the US and 2.2 million in Europe.
- Trial name
- ORIGIN (NCT06124833)
- Where
- South Korea
- Volunteers
- 900 people
- Sponsor
- Chang Kyun Lee
Less Than 3 Months Old, Healthy Infants
An Intervention Study in Healthy Infants Aged 0-6 Months With Probiotics Lacticaseibacillus Rhamnosus LRa05 (LRa05) and Bifidobacterium Animalis Subsp. Lactis BLa80 (BLa80) vs. Placebo, for Promoting Gut Microbiome Development.
The probiotics Bifidobacterium animalis subsp. lactis BLa80 and Lacticaseibacillus rhamnosus LRa05 have potential to enhance infant health and development based on previous research conducted on human infants.
- Trial name
- SMILE (NCT07505329)
- Testing
- Probiotic
- Where
- Ireland
- Volunteers
- 300 people, healthy volunteers welcome
- Sponsor
- University College Cork
Streptococcus Mutans
Investigation of Oral Microflora of Infants
The placement of cariogenic microorganisms in oral microflora is an important factor in dental caries. The aim of this study is to research from whom, when and how the cariogenic microorganisms are first transmitted to the…
- Trial name
- NCT04228861
- Where
- Turkey (Türkiye)
- Volunteers
- 47 people, healthy volunteers welcome
- Sponsor
- Inonu University
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
Anterior Crossbite
Evaluation of the Effect of Labio-Lingual Spring Hawley and Clear Aligners on Periodontal Health and Salivary Parameters
Objective: The aim of our study was to determine the effect of two different types of removable appliances on periodontal health, dental plaque colonization, as well as saliva, pH, flow rate, and buffering capacity of the…
- Trial name
- NCT06858033
- Testing
- Clear aligner, Labiolingual spring hawley
- Where
- Turkey (Türkiye)
- Volunteers
- 30 people
- Sponsor
- Ozge Gungor
Probiotic, Ocular Surface Disease
Efficacy and Safety of Oral Probiotics on Ocular Symptoms and Gut Microbiome of Children with Vernal Keratoconjunctivitis
The primary goal of this study is to determine the effects of oral probiotics on the severity of ocular symptoms and the alterations of the gut microbiome of children (4-18 years old) with vernal keratoconjunctivitis.
- Conditions
- Probiotic, Ocular Surface Disease, Ocular Diseases, Ocular Dryness
- Trial name
- NCT06793514
- Testing
- Probiotic
- Volunteers
- 32 people
- Sponsor
- Mohsen Pourazizi
Dental Caries
Effect of Silver Diamine Fluoride Application on Oral Microbiome of Healthy Pediatric Patient
This clinical trial aims to learn more about the working mechanism of an antimicrobial agent used to manage dental caries, especially in young, uncooperative children.
- Trial name
- NCT06699199
- Testing
- Silver diamine Fluoride 38%, Silver diamine fluoride- potassium iodide
- Where
- Saudi Arabia
- Volunteers
- 50 people
- Sponsor
- King Abdulaziz University