Assessment of Photodynamic Therapy With Annatto and Led for the Treatment of Halitosis in Mouth-Breathing Children

March 28, 2024 updated by: Sandra Kalil Bussadori, University of Nove de Julho

Assessment of Photodynamic Therapy With Annatto and Led for the Treatment of Halitosis in Mouth-Breathing Children: Randomized Controlled Clinical Trial

Objective: To assess the effectiveness of antimicrobial photodynamic therapy (aPDT) employing an annatto-based (20%) dye combined with blue LED for the treatment of halitosis in mouth-breathing children. Methods: Fifty-two children six to twelve years of age with diagnoses of mouth breathing and halitosis (score of ≥ 3 on Breath Alert® portable breath meter) were randomly allocated to two groups (n = 26). Group 1: brushing, dental floss and aPDT applied to middle third of the dorsum of the tongue. Group 2: brushing, dental floss and tongue scraper. Breath meter results before, immediately after treatment as well as seven and 30 days after treatment were compared. The normality of the data will be determined using the Shapiro-Wilk test. Parametric data will be submitted to analysis of variance and nonparametric data will be compared using the Kruskal-Wallis test. The results of each treatment in the different periods of the study will be compared using the Wilcoxon test.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
52

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2
  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Brazil
    • São Paulo
      • Santos, São Paulo, Brazil, 11045-002
        • Universidade Metropolitana de Santos - UNIMES

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

3 years to 8 years (Child)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Diagnosis of mouth breathing (performed using the calibrated Glatzel mirror test, water retention test and a questionnaire);
  • Halitosis presenting a score equal or greater than 2, in the Breath Alert analysis.

Exclusion Criteria:

  • Nasal breathers;
  • Dentofacial anomalies (such as cleft lip, cleft palate and nasopalatine);
  • Undergoing orthodontic and/or orthopedic treatment;
  • Undergoing cancer treatment;
  • Systemic alterations (gastrointestinal, renal, hepatic);
  • Under antibiotic treatment for up to 1 month before the research;
  • Fissured or grooved tongue.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Tongue Scraping Group
Participants in this group will receive treatment with tooth brushing, dental flossing and tongue scraping.
Procedure: Teeth Brushing
All 52 participants were instructed through a lecture on how to perform toothbrushing with a fluoridated toothpaste (Colgate T®) and dental flossing three times per day after meals for 30 days. The Bass technique was taught, by which the bristles should be positioned at an approximate angle of 45º to the gingival pocket on both the free and proximal faces, with the performance of short, slightly circular vibrating movements.
Procedure: Dental Flossing
All 52 participants were instructed to floss, 3 times a day after meals for 30 days.
Procedure: Tongue Scraping
Tongue scraping was performed by the same operator for all participants. Posteroanterior movements were performed with the scraper on the dorsum of the tongue, followed by the cleaning of the scraper with gauze. The procedure was performed ten times on each participant to standardize mechanical removal.
Experimental: Antimicrobial Photodynamic Therapy Group
Participants in this group will receive treatment with tooth brushing, dental flossing and antimicrobial photodynamic therapy in the tongue.
Procedure: Teeth Brushing
All 52 participants were instructed through a lecture on how to perform toothbrushing with a fluoridated toothpaste (Colgate T®) and dental flossing three times per day after meals for 30 days. The Bass technique was taught, by which the bristles should be positioned at an approximate angle of 45º to the gingival pocket on both the free and proximal faces, with the performance of short, slightly circular vibrating movements.
Procedure: Dental Flossing
All 52 participants were instructed to floss, 3 times a day after meals for 30 days.
Radiation: Antimicrobial Photodynamic Therapy (aPDT)
One session of aPDT was performed. The annatto photosensitizer was mixed at a concentration of 20% (Fórmula e Ação®, Brazil) in spray form, applied with a sufficient quantity to coat the middle third of the dorsum of the tongue (five sprays) and left for two minutes for incubation. The excess was removed with an aspirator. |The surface of the tongue remained moist with the photosensitizer itself without the use of water. Six points were irradiated with a distance of 1 cm between points, considering the spread of the light and effectiveness of aPDT. The device was previously calibrated at a wavelength of 395-480 nm. Light was irradiated to ensure a beam area of 2 cm in diameter per point. Energy was 9.6 J and exposure time was 20 seconds per point.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Changes in Halimetry Results
Time Frame: Baseline, immediately after treatment, after 7 days and after 30 days.
The Breath Alert® device was used following the manufacturer's instructions and disinfected after each use. The device was shaken four or five times prior to each use to eliminate any residual odors. A "beep" was emitted upon opening the upper compartment of the device and a second "beep" was emitted when the participant blew into the frontal air input (air flow passage). After a third "beep", breath odor was measured and scored on a scale of 0 to 8 points. If the letter ''C'' appeared, indicating an error, the procedure was repeated. A score ≥ 2 points was considered indicative of halitosis.
Baseline, immediately after treatment, after 7 days and after 30 days.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
University of Nove de Julho

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
February 1, 2023

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
October 1, 2023

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 20, 2023

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
October 19, 2022

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
October 19, 2022

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
October 21, 2022

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
April 1, 2024

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
March 28, 2024

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
March 1, 2024

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • MouthBreathing

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

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