- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03591484
Treatment of Halitosis With Photodynamic Therapy in Older Patients
Treatment of Halitosis With Photodynamic Therapy in Older Patients: Protocol for a Randomized, Controlled Trial
Study Overview
Status
Conditions
Detailed Description
Methods:
A single-center, randomized, controlled, single-blind clinical trial was designed in accordance with the criteria recommended for interventional trials in the SPIRIT Statement. The project for the proposed study received approval from the Human Research Ethics Committee of Universidade Nove de Julho (certificate number: 87160418.7.0000.5511).
Selection of individuals - characterization of sample - One group will be composed of older adults (60 years or older) with a diagnosis of bronchiectasis in medical follow up at the Pulmonary Disease Clinic of the School of Medicine of the Universidade de São Paulo. After verbal and written explanations of the study, those who agree to participate will sign a statement of informed consent approved by the Human Research Ethics Committee of Universidade Nove de Julho. The group of healthy patients will be composed of patients in treatment at the dental clinic of Universidade Nove de Julho, who will receive clarifications regarding the study and will also sign a statement of informed consent. The study will be conducted in compliance with the precepts stipulated in the Declaration of Helsinki (revised in Fortaleza, Brazil, 2013).
Calculation of sample size - To achieve an effect size of 0.40 among the four groups (PDT in healthy participants. PDT in patients with bronchiectasis, periodontal treatment or denture hygiene in healthy participants, periodontal treatment or denture hygiene in patients with bronchiectasis), assuming an alpha error of 0.05 and beta error of 0.80, the total sample will be 80 individuals (20 per group). The sample size calculation was performed using G*Power (version 3.1.9.2) (Faul, 2007).
Inclusion criteria - Men and women aged 60 years or older, with or without a diagnosis of bronchiectasis, with more than 10 natural teeth or using complete upper and lower dentures.
Exclusion criteria - smokers or ex-smokers having quit less than five years ago, a diagnosis of cystic fibrosis (which, although is a lung disease, has a genetic etiology) and hypersensitivity to the photosensitizing agent used in PDT.
Training and calibration of examiner - An examiner (gold standard) will perform training and calibration exercises to maximize the reproducibility of the measurements. For such, 10 individuals with halitosis will be evaluated using the Oral Chroma® device. These individuals will not participate in the main study. The intraclass correlation coefficient (ICC) will be calculated for the determination of intra-examiner agreement (≥ 0.90) with regard to the halitosis readings.
Randomization - The 40 healthy dentate individuals will be randomized in two groups: Group A (20 individuals submitted to treatment with a tongue scraper) and Group B (20 individuals submitted to treatment with PDT). The 40 healthy edentulous individuals will be randomized in two groups: Group C (20 individuals submitted to treatment with a tongue scraper) and Group D (20 individuals submitted to treatment with PDT). Therefore, two independent randomizations will be performed for these distinct groups of individuals (dentate and edentulous). Opaque envelopes will be identified with sequential numbers (1 to 40) and will contain pieces of paper with the information of the corresponding experimental group (A or B and C or D). Block randomization will be performed in blocks of five patients (four blocks for both treatments; example of a block: AABAB). The envelopes will be sealed and kept in numerical order in a safe place until the time of the treatments. The randomization and preparation of the envelopes will be performed by a researcher who will not otherwise participate in the study. The same procedure will be performed for the patients with bronchiectasis. Randomization will be performed using Microsoft Excel, version 2013.
Characterization of the study - The experimental design will consist of four groups: G1- healthy older adults with halitosis and 10 teeth or more (n = 40); G2- healthy older adults with halitosis who wear complete dentures (n = 40); G3- older adults with bronchiectasis who have halitosis and 10 teeth or more (n = 40); and G4- older adults with bronchiectasis who have halitosis and wear complete dentures (n = 40). The evaluation of halitosis and the microbiological analysis of the dorsum of the tongue will be performed at baseline (1st session), after treatment with PDT, periodontal treatment or denture hygiene (2nd session) and after three months (3rd session)
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Contact
- Name: Anna Carolina RT Horliana, PhD
- Phone Number: 13981999848
- Email: annacrth@gmail.com
Study Contact Backup
- Name: Anna Carolina R Horliana, PhD
- Phone Number: 13981999848
- Email: annacrth@gmail.com
Study Locations
-
-
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São Paulo, Brazil, 01504-001
- University of Nove de Julho (UNINOVE)
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- Age: 60 years or older
- Halitosis positive: ≥ 112 ppbin the gas chromatography test
- Patients with or without a diagnosis of bronchiectasis
- Patients with more than 10 natural teeth or using complete upper and lower dentures.
Exclusion Criteria:
- Smokers or ex-smokers having quit less than five years ago
- Patients with a diagnosis of cystic fibrosis (which, although is a lung disease, has a genetic etiology)
- Patients with hypersensitivity to the photosensitizing agent used in PDT
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: G1 dentate healthy older
Treatment with Photodynamic therapy (n = 20).
The dentate participants will received periodontal treatment.
The evaluation of halitosis and the microbiological analysis will be repeated before these steps
|
Treatment with Photodynamic therapy.
The evaluation of halitosis and the microbiological analysis will be repeated before this step
Periodontal treatment will be performed with curettes and ultrassom.
The evaluation of halitosis and the microbiological analysis will be repeated before this step
|
Experimental: G2 healthy older/dentures
Treatment with Photodynamic therapy (n = 20).
The participants will be submitted to hygiene procedures for the mucosa and dentures.
The evaluation of halitosis and the microbiological analysis will be repeated before these steps
|
Treatment with Photodynamic therapy.
The evaluation of halitosis and the microbiological analysis will be repeated before this step
edentulous participants will be submitted to hygiene procedures for the mucosa and dentures.
The evaluation of halitosis and the microbiological analysis will be repeated before this step
|
Active Comparator: G3 dentate older bronchiectasis
Treatment with tongue scraper (n = 20).
The dentate participants with bronchiectasis will received periodontal treatment.
The evaluation of halitosis and the microbiological analysis will be repeated before these steps
|
Periodontal treatment will be performed with curettes and ultrassom.
The evaluation of halitosis and the microbiological analysis will be repeated before this step
Treatment with tongue scraper.
The evaluation of halitosis and the microbiological analysis will be repeated before this step
|
Active Comparator: G4 older bronchiectasis /dentures
Treatment with tongue scraper (n = 20).
The participants will be submitted to hygiene procedures for the mucosa and dentures.
The evaluation of halitosis and the microbiological analysis will be repeated before these steps
|
edentulous participants will be submitted to hygiene procedures for the mucosa and dentures.
The evaluation of halitosis and the microbiological analysis will be repeated before this step
Treatment with tongue scraper.
The evaluation of halitosis and the microbiological analysis will be repeated before this step
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Halimetry (gas chromatography test)
Time Frame: study completion an average of 1 year
|
The portable Oral ChromaTM will be used for the assessment of halitosis.
A syringe will be placed in the patient's mouth with the plunger completely inserted and the participant will breathe through the nose with the mouth closed for one minute.The plunger will then be withdrawn to fill the chamber with air.
This procedure will be repeated.
The gas injection needle will be placed on the syringe and the plunger will be adjusted to 0.5 ml.
This air will be injected into the input of the device in a single motion.
This procedure will be done before and immediately after treatment.
|
study completion an average of 1 year
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Microbiological evaluation of tongue coating
Time Frame: study completion an average of 1 year
|
for the identification of the bacteria P. gingivalis and T. denticola.
|
study completion an average of 1 year
|
Collaborators and Investigators
Sponsor
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- Halidosos
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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