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Stage III PeriodontitisPhase 2NCT07316023

Antimicrobial Photodynamic Therapy With ICG-Loaded Nanoparticles for Periodontitis Management

A Phase 2 study testing Non- surgical periodontal therapy followed by photodynamic therapy with ICG-loaded nanoparticles, Non- surgical periodontal therapy followed by photodynamic therapy with ICG-loaded macroparticles and Non- surgical periodontal therapy only in people with Stage III Periodontitis, run by Nada Mahmoud Soliman at 1 site in Egypt.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

To better understand and treat your gum disease, dentists now use a system that stages its severity and grades its speed, rather than using old labels. The recommended first step is almost always a deep cleaning, which is very effective. Read more about this study

Who is it for?
Ages 36 to 50 years
Conditions the study is for
Stage III Periodontitis
What is being tested?
Non- surgical periodontal therapy followed by photodynamic therapy with ICG-loaded nanoparticles, Non- surgical periodontal therapy followed by photodynamic therapy with ICG-loaded macroparticles and Non- surgical periodontal therapy only
Could I receive a placebo?
No, everyone receives an active treatment
How many people
27 participants
Where
1 siteEgypt
Study dates
1 Jun 2026to 30 Jun 2026
Phase
Phase 2
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 36 to 50 years
  • All sexes
  • No healthy volunteers
  • Adult

Who may be able to join

  • 1- Both genders aged between 36-50 years (Wadhwa et al., 2021) 2- Generalized stage III grade B periodontitis (Papapanou et al., 2018). Posterior teeth, stage III with PD>6 mm and CAL ≥5 mm 3- Patients ready to comply with oral hygiene measures. 4- Patients free from any systemic disease that may affect the treatment (Glick et al., 2008)

Who cannot join

  • Smokers
  • Pregnant females.
  • Drug abusers.
  • Patients taking antibiotics or performed any periodontal treatment in the previous 6 months.
  • Justification for Exclusions:
  • To reduce any confounding factors and bias that may affect the results of this study.

Trial locations and contacts

1 site in 1 country.

Egypt1 site
  • Faculty of Dentistry , Ainshams University

    Cairo, Cairo Governorate, 11566

Other trials in Egypt

About this study

Official title: Efficacy of Antimicrobial Photodynamic Therapy Using Polymeric Nanoparticles Loaded With Indocyanine Green in Management of Periodontitis.(A Randomized Controlled Clinical Trial Study With Microbiological Analysis )

To better understand and treat your gum disease, dentists now use a system that stages its severity and grades its speed, rather than using old labels. The recommended first step is almost always a deep cleaning, which is very effective. However, because some bacteria can hide from cleanings and antibiotics, researchers are exploring a promising light-based treatment. This method uses a safe, light-activated dye and a gentle laser to target and kill bacteria without leading to resistance. To make this treatment even stronger, scientists are testing a way to package the dye inside tiny, biodegradable "containers" that deliver it directly to the germs. The goal of this research is to see if this advanced delivery method works better than the dye alone, hoping to provide a more powerful, non-surgical option to fight gum disease and protect your teeth."

Read the detailed description

This randomized controlled clinical trial included twenty-seven patients diagnosed with generalized stage III periodontitis, who were randomly allocated into three groups using a computer-generated randomization sequence (www.randomizer.org

). Group I (test group) received non-surgical periodontal therapy followed by the application of indocyanine green (ICG)-loaded polymeric nanoparticles and antimicrobial photodynamic therapy (aPDT). Group II (positive control) received non-surgical periodontal therapy with ICG gel application alone and aPDT, whereas Group III (negative control) received non-surgical periodontal therapy only. Following full-mouth supra- and subgingival debridement, baseline clinical measurements and gingival crevicular fluid (GCF) samples were obtained. In Groups I and II, after achieving site dryness, the photosensitizer was applied for 10 minutes, rinsed, and activated using a 940 nm diode laser (0.5 W, continuous mode, non-initiated E3 tip, contact mode, 30 seconds per site, six sites per tooth). Standardized oral hygiene instructions were provided to all participants. Clinical and microbiological evaluations were performed at baseline, 3 months, and 6 months post-treatment. Clinical parameters including plaque index, gingival index, probing depth, and clinical attachment level were recorded using a UNC-15 probe. For microbiological analysis, GCF samples from the most affected sites were collected at baseline, immediately post-treatment, 1 week, and 1 month, and analyzed by polymerase chain reaction (PCR) to quantify Porphyromonas gingivalis. Samples contaminated with blood or saliva were excluded, and uncontaminated samples were transported in reduced transport fluid (RTF) and cultured under anaerobic conditions for bacterial quantification.

The obtained results will be collected, tabulated, and subjected to appropriate statistical analysis

Being tested
Non- surgical periodontal therapy followed by photodynamic therapy with ICG-loaded nanoparticles, Non- surgical periodontal therapy followed by photodynamic therapy with ICG-loaded macroparticles, Non- surgical periodontal therapy only
Keywords
periodontits/ stage III / NSPT/PDT/Nano particles/ ICG
Medical subject headings
Periodontitis

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Non- surgical periodontal therapy followed by photodynamic therapy with ICG-loaded nanoparticlesDrug

    Supragingival scaling and subgingival debridement followed by placement of ICG-loaded nanoparticles activated by diode laser for antibacterial photodynamic therapy to effectively target and eliminate pathogenic bacteria.

  • Non- surgical periodontal therapy followed by photodynamic therapy with ICG-loaded macroparticlesDrug

    supragingival scaling and subgingival debridement followed by ICG-loaded macroparticles activated by diode laser for antibacterial photodynamic therapy to effectively target and eliminate pathogenic bacteria.

  • Non- surgical periodontal therapy onlyOther

    supragingival scaling and subgingival debridement only

Study groups in NCT07316023
Study groupRoleWhat they receive
Nano GroupExperimentalThis group will include 9 patients diagnosed with generalized stage III periodontitis and will be treated with non-surgical periodontal treatment + ICG-loaded polymeric nanoparticles + antimicrobial photodynamic therapy (aPDT).
Receives: Drug: Non- surgical periodontal therapy followed by photodynamic therapy with ICG-loaded nanoparticles
Macro Group( positive control)Active comparatorGroup (II): Positive Control This group will include 9 patients diagnosed with generalized stage III periodontitis and will be treated with non-surgical periodontal treatment + ICG gel application alone + antimicrobial photodynamic therapy.
Receives: Drug: Non- surgical periodontal therapy followed by photodynamic therapy with ICG-loaded macroparticles
Negative ControlOtherGroup (III): Negative Control This group will include 9 patients diagnosed with stage III periodontitis and will be treated with non-surgical periodontal therapy only.
Receives: Other: Non- surgical periodontal therapy only

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Plaque Index (unit:score)

    Clinical parameters including plaque index, gingival index, probing pocket depth (PPD), and clinical attachment level (CAL) will be recorded at baseline, 3, and 6 months using a UNC-15 probe by a calibrated examiner. The plaque and gingival indices (Löe and Silness, 1963) assess oral hygiene and inflammation. The following clinical parameters will be taken using the UNC15 Probe at baseline, 3 months, and 6 months postoperative.

    • Plaque index: - (Loe and Silness, 1963) 0 = no plaque.
    1. = plaque recognized only by running a probe across the marginal surface of implant restoration.
    2. = plaque visible to the naked eye.
    3. = abundance of soft matter.

    Measured: from the enrollment to the end of treatment at 6 months the clinical parameters are first measured at baseline through stent for standaridization and then measured again after 3 months and 6 months repectively .

  2. The Gingival index (unit=score )

    The following clinical parameters will be taken using UNC15 Probe at baseline, 3 months and 6 months postoperative.

    • Gingival index: -(Loe and Silness ,1963) 0 = Normal gingiva
    1. = Mild inflammation - slight edema. No bleeding on probing
    2. = Moderate inflammation -redness, edema and glazing. Bleeding on probing.
    3. = Severe inflammation - marked redness and edema. Ulceration. Tendency to spontaneous bleeding

    Measured: from the enrollment to the end of treatment at 6 months the clinical parameters are first measured at baseline through stent for standaridization and then measured again after 3 months and 6 months repectively .

  3. Probing depth (PD) (Unit=mm)

    Will be measured from the gingival margin to the depth of the pocket at four points (mesio-facial, mid-facial, disto-facial and mid-lingual) to the nearest millimeter using UNC-15 periodontal probe The average of the three facial points will be recorded as the facial probing depth (FPD), while the mid-lingual point will be recorded as the lingual probing depth.

    Measured: from the enrollment to the end of treatment at 6 months the clinical parameters are first measured at baseline through stent for standaridization and then measured again after 3 months and 6 months repectively .

  4. Clinical Attachment Loss (CAL) (Unit=mm)

    • Clinical attachment level (CAL): (Ramfjord et al., 1975). Will be measured from the CEJ to the depth of the periodontal pocket.

    Measured: from the enrollment to the end of treatment at 6 months the clinical parameters are first measured at baseline through stent for standaridization and then measured again after 3 months and 6 months repectively .

Secondary outcomes (1)
  1. Microbial evaluation to detect bactericidal effect on Porhyromonas gingivalis.

    Microbiological analysis will assess P. gingivalis levels in gingival crevicular fluid (GCF) using PCR at baseline, immediately post-treatment, one week, and one month. GCF samples will be collected from the most affected site using sterile paper strips, avoiding blood or saliva contamination, and stored in reduced transport fluid. Samples will be cultured and analyzed by PCR for P. gingivalis quantification. Results will compare microbial reduction among groups to evaluate the antimicrobial efficacy of nano- and macro-formulated photosensitizer gels versus conventional debridement.

    Measured: from enrollment to the end of treatment at 6 months GCF samples will be collected from the deepest, most affected sites at baseline line , immediate postlaser treatment and after one month respectively

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted5 Jan 2026
  2. Study start1 Jun 2026
  3. Primary completion30 Jun 2026
  4. Study completion30 Jun 2026

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Model description
Patients will be randomly allocated using computer-generated randomization (www.Randomizer.org ) into three groups of nine each. Group I will receive non-surgical periodontal therapy (NSPT) combined with ICG-loaded polymeric nanoparticles and antimicrobial photodynamic therapy (aPDT). Group II (positive control) will receive NSPT with ICG gel and aPDT, while Group III (negative control) will receive NSPT alone. After full-mouth debridement and baseline GCF and clinical data collection, the photosensitizer will be applied for 10 minutes, followed by diode laser irradiation (940 nm, 0.5 W, continuous mode, 30 seconds per site using a 0.3 nm E3 tip in contact mode). Excess gel will be removed after activation, and aPDT will be performed once. All patients will receive oral hygiene instructions, and clinical and GCF evaluations will be conducted at baseline, immediately post-treatment, 1 week, 1 month, 3 months, and 6 months.
Masking
Triple blind
Who is masked
Participant, Care provider, Outcomes assessor
Enrolment
27 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07316023
Sponsor's protocol ID
Polymeric Nanoparticles /ICG
Status last verified
Oct 2026
First submitted
16 Nov 2025
Last updated
21 Oct 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Non- surgical periodontal therapy followed by photodynamic therapy with ICG-loaded nanoparticles, Non- surgical periodontal therapy followed by photodynamic therapy with ICG-loaded macroparticles and Non- surgical periodontal therapy only in people with Stage III Periodontitis, run by Nada Mahmoud Soliman at 1 site in Egypt.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 1 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 21 Oct 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Egypt. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Plaque Index (unit:score) (time frame: from the enrollment to the end of treatment at 6 months the clinical parameters are first measured at baseline through stent for standaridization and then measured again after 3 months and 6 months repectively .). The study lists 4 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 21 Oct 2026.

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