Cigarette Smoking and Oral Microbiota
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Official title
The Effect of Smoking on Oral Microbiota
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
Background: \- Normal bacteria and other tiny organisms (the microbiota) live in the mouth and nose. They contribute to human health in many ways, including digesting food and balancing hormones. Testing samples from the mouth can show how microbiotas are related to health and disease. However, the microbiota in a person's mouth differs depending on the methods of collection and the part of the mouth that is tested. Understanding what can change the microbiota (including mouth sites, and what a person eats or smokes) will give more information on how to study oral microbiota and smoking-related cancers and other diseases. Objectives: * To see how smoking affects the microbiotas in mouth and nose. * To determine which collection method for mouth specimens should be used for studying microbiota. Eligibility: * Individuals at least 18 years of age who have been using tobacco products regularly for at least 5 years. * Individuals at least 18 years of age who have never smoked. Design: * Participants will be screened with a physical exam and medical history. * Participants will have a dental exam. They will provide a saliva sample. The dentist will take swabs from the inside of the mouth, including the tongue, tonsils, gums, and teeth. The inside of the nose will also be swabbed. * Participants will also fill out a questionnaire. It will ask about their history of smoking and consumption of alcohol, tea, and coffee. It will also ask about current medications, including antibiotics.
Study identification
- NCT ID
- NCT01862809
- Recruitment status
- Completed
- Study type
- Observational
- Phase
- Not listed
- Enrollment
- 50 participants
Conditions and interventions
Conditions
Interventions
Not listed
Eligibility (public fields only)
- Age range
- 25 Years to 80 Years
- Sex
- All
- Healthy volunteers
- Accepts healthy volunteers
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- May 23, 2013 (Actual)
- Primary completion
- Dec 5, 2014 (Actual)
- Completion
- Jun 26, 2020 (Actual)
- Last update posted
- Jun 30, 2020
2013 – 2020
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| University of Rochester | Rochester | New York | 14642 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT01862809, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Jun 30, 2020 · Synced Nov 15, 2026
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