An interventional study of Full-mouth scaling combined with antimicrobial photodynamic therapy and full-mouth scaling in Periodontitis and Halitosis, sponsored by Federal University of Minas Gerais. Completed at 1 site in Brazil. Open to participants aged 30 Years to 65 Years. Per ClinicalTrials.gov, last updated 2025-12-22.
Sponsored by Federal University of Minas Gerais · Not applicable, Interventional, and Treatment
The present study aims to evaluate bad breath in patients undergoing gingival treatment combined with tongue scraping and laser and to assess its potential benefits for both periodontal and microbiological condition. Firs patients will be selected among those who participated in a privies study. Additional patients will be also invited. They must have gum disease and bad breath. Treatments will be completed within 24 hours and oral samples will be collected with thin paper points. Bad breath will be evaluated by a professional and a specific gas machine.
The present study aims to evaluate halitosis in patients undergoing non-surgical periodontal therapy [(Full-mouth disinfection (FMD) combined with tongue scraping and antimicrobial photodynamic therapy (aPDT), and to assess its potential benefits for both periodontal and microbiological condition. A pilot study will be performed with participants who took part almost 10 years ago in the study NCT02368678. They will be invited by phone contact. In addition, new participants will be recruited by convenience in dental clinics from the Federal University of Minas Gerais until completion of 20 participants per group. Individuals with stage III periodontitis and halitosis (organoleptic method > 2), will be allocated into two periodontal treatment groups. Halitosis will be assessed using the organoleptic method and gas chromatography (OralChroma device) at three time points: before and after treatments. Microbiological samples will be collected before and after treatments from periodontal pockets and pooled samples from the tongue dorsum. These samples will be analyzed by using real-time PCR (q-PCR) aiming at detecting target bacterial species.
1,231 studies on the registry are indexed under Periodontitis; 295 are open to participants now.
This study's enrollment of 40 is close to the median of 44 across 846 interventional studies indexed under Periodontitis.
Browse Periodontitis studies →Federal University of Minas Gerais is the lead sponsor of 152 studies on the registry; 18 are open to participants now.
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Exclusion Criteria:
Full-mouth ultrasonic and manual periodontal instrumentation
Procedure: full-mouth scaling
Full-mouth ultrasonic and manual periodontal instrumentation combined with antimicrobial photodynamic therapy applied to tongue dorsum and periodontal pockets
Radiation: Full-mouth scaling combined with antimicrobial photodynamic therapy
After full-mouth scaling procedures antimicrobial photodynamic therapy was carried out using a laser-activated disinfection device with a red laser emission (wavelength: 630 nm, irradiance: 2000-4000 mW/cm², spot size at the probe tip: 8 mm diameter) and high-viscosity methylene blue gel (0.1 mg/mL) which was applied at six spots on the tongue dorsum. Antimicrobial photodynamic therapy was also applied iIn sites with altered periodontal pocket depth (≥ 4mm). The dye remained in the pockets for 10 minutes to ensure full absorption and its excess was rinsed with sterile saline after laser exposure.
Full-mouth scaling within 24 hours, divided into two sessions of ultrasonic instrumentation followed by manual supra- and subgingival scaling and root planing. Tongue cleaning was performed with a tongue scraper.
sulfur volatile compounds changes
pre and post-treatment changes in levels (parts per billion) of CH3SH, a sulfur volatile compound
Time frame: baseline versus 21 and 45 days after treatment
Changes in periodontal probing depth
Pre and pos-treatment changes in periodontal pocket depth (mm)
Time frame: baseline versus 45 days after treatment
Changes in organoleptic testing
Pre and post-treatment changes in organoleptic scores
Time frame: Baseline versus 45 days after treatment
Changes in tongue total bacteria count
Pre- and post-treatment changes in total bacteria counts from tongue dorsal samples
Time frame: baseline versus 45 days after treatment
Plan to share: No — Data will be analyzed by group and using numerical codes avoiding individual personal data identification. Data access will be protected by password.
No publications or documents are linked to this record.
Ran from Jan 2025 to primary completion in Feb 2025, 1 month.
Of 480 non-industry interventional studies with no phase under Periodontitis, half reached primary completion within 15 months of starting (the median), counting those still running; a quarter within 8 and three quarters within 31. This study's 1 month is below that.
Counting every sponsor, half of 494 studies reached it within 16 months; a quarter within 8 and three quarters within 31.
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This study is completed, as verified in Dec 2025. You cannot join it, but the record below documents what was studied.
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Federal University of Minas Gerais →