Clinical trials: Oral Microbiota
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
Barrett Esophagus
Longitudinal Oral Microbiome Sampling for BE
This is a longitudinal cohort study to assess the impact of repeated sampling of an oral microbiome signature for Barrett's esophagus (BE).
- Trial name
- NCT05133102
- Testing
- Sample collection
- Where
- 2 sites in United States
- Volunteers
- 275 people, healthy volunteers welcome
- Sponsor
- Columbia University
Oral Squamous Cell Carcinoma (OSCC), Postoperative Pain
Effectiveness of Hydrogen Water Intervention on Acute Oral Inflammation, Oral Microbiota, and Pain Following Free Flap Reconstruction in Patients With Oral Cancer
This randomized, double-blind, parallel-group controlled trial evaluates the effectiveness of hydrogen water oral care on acute oral inflammation, oral microbiota, and pain in patients with oral cancer who have undergone free…
- Conditions
- Oral Squamous Cell Carcinoma (OSCC), Postoperative Pain, Postoperative Oral Mucositis, Free Flap Reconstruction
- Trial name
- NCT07306546
- Testing
- Hydrogen Water Oral Care, Water Oral Care
- Where
- Taiwan
- Volunteers
- 36 people
- Sponsor
- Kaohsiung Medical University Chung-Ho Memorial Hospital
Orthodontic Appliances, Removable, Orthodontic Appliances, Fixed
Microbiome and Immunogenity of Saliva During Orthodontic Therapy
There are two essential ways of treatment in the field of orthodontics. The fixed appliance treatment with self-ligating or conventional brackets and treatment with aligners.
- Conditions
- Orthodontic Appliances, Removable, Orthodontic Appliances, Fixed, Oral Microbiome, Cell Culture
- Trial name
- NCT04139538
- Testing
- orthodontic treatment
- Where
- Austria
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Medical University of Vienna
Nitric Oxide, Oral Microbiome
Nitrate Mouth Rinse and the Oral Microbiome
The study is aimed to determine if changes to the oral microbiome occur after the use of a nitrate rich mouth rinse. Participants with be asked to use either a controlled (water) mouthrinse once daily for 2 weeks while…
- Trial name
- NCT06588049
- Testing
- Beet Root, Water
- Where
- Canada
- Volunteers
- 21 people, healthy volunteers welcome
- Sponsor
- Dalhousie University
Microbiota
The Oral Microbiota is Associated With Autoimmune Thyroiditis
Autoimmune thyroiditis (AITD) mainly includes Hashimoto's thyroiditis (HT) and Grave's disease (GD). Studies have shown that autoimmune thyroiditis is closely related to microbial disorders such as autoimmune thyroiditis However…
- Trial name
- NCT03447093
- Testing
- Methimazole Pill, Propylthiouracil Pill
- Where
- China
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- First Affiliated Hospital of Harbin Medical University
Healthy
The Effect of a Postbiotic on Oral Health in Healthy Adults
The goal of this randomised, placebo-controlled trial is to determine the effect of a chewable postbiotic tablet on the oral health of male and female healthy adults under conditions of short term oral-neglect (a short, temporary…
- Trial name
- LOOFAH2 (NCT07830862)
- Testing
- Postbiotic
- Where
- Canada
- Volunteers
- 56 people, healthy volunteers welcome
- Sponsor
- The Archer-Daniels-Midland Company
Vaginal Health
Effects of Oral Probiotic Product on Vaginal Microbial Community and Parameters of Vaginal Health
The purpose of the study is to assess the efficacy and safety of an oral probiotic product on the vaginal microbiome and on parameters of vaginal health.
- Trial name
- NCT03543982
- Testing
- Oral probiotic product
- Where
- Canada
- Volunteers
- 37 people, healthy volunteers welcome
- Sponsor
- UAS Labs LLC
COVID-19, Probiotic
A Randomised-controlled Trial of an Oral Microbiome Immunity Formula in Recovered COVID-19 Patients
This study aims to evaluate the effectiveness of an oral microbiome immunity formula in modulating gut microbiota, enhancing immunity and reducing long-term complications and co-morbidities in patients who have recovered from…
- Trial name
- NCT04950803
- Testing
- Microbiome immunity formula
- Where
- Hong Kong
- Volunteers
- 448 people
- Sponsor
- Chinese University of Hong Kong
Wound Heal, Oral Microbiome
Effect of Mouthwashes on Oral Wound Healing and Microbiome
The purpose of this clinical research study is to investigate if mouthwashes to be tested can affect oral mucosal wound healing and change the oral microbiome (bacteria colonization) or expression of selected biomarkers.
- Trial name
- NCT05270382
- Testing
- cetylpyridinium chloride
- Where
- United States
- Volunteers
- 34 people, healthy volunteers welcome
- Sponsor
- University of Illinois Chicago
Hyaluronic Acid, Periodontal Therapy
Hyaluronic Acid as an Adjunct to Non-Surgical Periodontal Therapy in Smokers
The goal of this clinical trial is to evaluate whether hyaluronic acid (HA) improves periodontal healing in people with periodontal disease who smoke.
- Conditions
- Hyaluronic Acid, Periodontal Therapy, Oral Microbiota, Oxidative Stress
- Trial name
- NCT07597213
- Testing
- Scaling and Root Planing, Hyaluronic Acid (HYADENT BG)
- Where
- Turkey (Türkiye)
- Volunteers
- 23 people
- Sponsor
- Marmara University
Rheumatoid Arthritis, Periodontitis
Dental Prophylaxis and Rheumatoid Arthritis
This study evaluates the influence of dental prophylaxis on disease activity of Rheumatoid Arthritis. In addition to standard antirheumatic therapy, recently the question has been raised whether or not there is a supplementary…
- Conditions
- Rheumatoid Arthritis, Periodontitis, Gingivitis, Dental Prophylaxis
- Trial name
- PREPARA II (NCT03087240)
- Testing
- Dental Prophylaxis
- Where
- Germany
- Volunteers
- 70 people
- Sponsor
- University Hospital Heidelberg
Periodontitis, Adult, Periodontitis (Stage 3)
Microbiological and Clinical Effects of Pre- and Probiotics in Non-Surgical Periodontal Therapy
Periodontitis is a prevalent chronic inflammatory disease driven by a dysbiotic oral biofilm and a dysregulated host immune response.
- Conditions
- Periodontitis, Adult, Periodontitis (Stage 3), Periodontitis Stage IV
- Trial name
- PROPARO (NCT07443410)
- Testing
- Non-surgical periodontal therapy (NSPT) and supportive periodontal therapy (SPT), Probiotic lozenge (Limosilactobacillus reuteri; GUM® PerioBalance®), Vitamin B12 drops (natural elements)
- Where
- Germany
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- University Hospital Heidelberg
Oral Cavity Squamous Cell Carcinoma
Nisin in Oral Cavity Squamous Cell Carcinoma (OCSCC)
This is a study of oral nisin administration in patients with OSCC who are undergoing complete surgical resection surgery with or without adjuvant radiation/chemoradiation as part of their routine care at the University of…
- Trial name
- NCT06097468
- Testing
- NisinZ® P, Surgery (non-interventional, standard of care)
- Where
- United States
- Volunteers
- 40 people
- Sponsor
- University of California, San Francisco
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
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
Oral Cancer
The Oral Microbiome and Upper Aerodigestive Squamous Cell Cancer
The human oral cavity is a diverse habitat that contains approximately 700 prokaryotic species. The oral microbiome is comprised of 44% named species, 12% isolates representing unnamed species, and 44% phylotypes known only from…
- Trial name
- NCT03304132
- Testing
- Classification of Oral Microbiome Using 16S rRNA gene sequence-based approach, Classification of Oral Microbiome Using taxonomic approach
- Where
- United States
- Volunteers
- 560 people, healthy volunteers welcome
- Sponsor
- NYU Langone Health
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
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
Type 2 Diabetes Mellitus, Periodontitis
Integrated Diabetes and Oral Health Care in Oman
Type 2 diabetes mellitus (T2DM) and periodontal (gum) disease are closely related conditions that may negatively affect each other. However, oral health is not routinely integrated into diabetes self-management education.
- Conditions
- Type 2 Diabetes Mellitus, Periodontitis, T2DM, Periodontal Disease
- Trial name
- NCT07809477
- Testing
- Health Belief Model-Based Integrated Diabetes-Oral Health Educational Intervention, Standard Diabetes Education and Routine Care
- Volunteers
- 290 people
- Sponsor
- Oman Ministry of Health