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CompletedNCT06601608Updated Apr 13, 2026

Efficacy of Locally Delivered Rosemary Extract Gel in Management of Periodontitis

A Phase 2 interventional study of Herbal therapy and Placebo Drug in Periodontitis (Stage 3) and Periodontal Pocket, sponsored by Ain Shams University. Completed at 1 site in Egypt. Open to participants aged 25 Years to 45 Years. Per ClinicalTrials.gov, last updated 2026-04-13.

Sponsored by Ain Shams University · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
48
Allocation
Randomized
Ages
25 Years to 45 Years
Sex
All
01

Study summary

Rosemary extract is known for its antibacterial, anti-inflammatory and anti-oxidant properties that make it a promising therapeutic aid as a local delivery drug in deep periodontal pockets in adjunct to non-surgical periodontal therapy in management of periodontitis. These properties are due to the high content of phenolic compounds such as carnosic acid, urolic acid, rosmarinic acid or chlorogenic acid. Rosemary extract was previously investigated and proved its effectiveness against periodontopathogens in-vitro. Thus, its selected for this study to be administered in a gel form to assess its efficacy in management of periodontitis.

Read the detailed description

Forty eight patients with deep periodontal pockets more than 5 mm will be randomly assigned into 2 equal groups. The test group will receive the rosemary extract gel in adjunct to non-surgical periodontal therapy, while the control group will receive placebo gel.

Clinical evaluation of the clinical parameters including probing depth, gingival index, plaque index and clinical attachment level will be recorded.

Microbiological analysis using PCR test will be performed using perio-papers.

02

Conditions studied

  • Periodontitis (Stage 3)
  • Periodontal Pocket

Keywords

  • Periodontitis
  • local delivery drug
  • microbiological analysis
03

In context

Periodontitis

1,635 studies on the registry are indexed under Periodontitis; 327 are open to participants now.

This study's enrollment of 48 is close to the median of 45 across 1,191 interventional studies indexed under Periodontitis.

Browse Periodontitis studies →

Lead sponsor

Ain Shams University is the lead sponsor of 1,876 studies on the registry; 423 are open to participants now.

Of its 32 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
25 Years to 45 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  1. Both genders aged between 25-45 years.
  2. Healthy adult patients as evidenced by Burket's oral medicine health history questionnaire.
  3. Stage III grade B periodontitis with at least two non-adjacent sites in posterior teeth with PD ≥ 6 mm, CAL ≥ 5 mm showing BOP and ≤ 4 teeth lost due to periodontitis.
  4. Patients ready to comply with oral hygiene measures.

Exclusion criteria

Exclusion Criteria:

  1. Smokers.
  2. Pregnant or lactating females.
  3. Drug abusers.
  4. Patients taking antibiotics or performed any periodontal treatment in the previous 6 months.
  5. Patients who have a known allergy or hypersensitivity to rosemary, its constituents, or other members of the Lamiaceae family.
  6. Patients with parafunctional habits.
05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Outcomes assessor)
Enrollment
48 participants (actual)

Study arms

  • Experimental
    Rosemary extract gel

    rosemary extract gel will be applied in deep periodontal pockets with a concentration 5%.

    Drug: Herbal therapy

  • Placebo comparator
    placebo gel

    a placebo gel will be applied in deep periodontal pockets in stage III periodontitis patients as an adjunct to non-surgical periodontal therapy.

    Drug: Placebo Drug

Interventions

  • DrugHerbal therapy

    rosemary extract gel is used for the first time as a local drug delivery as an adjunct to non-surgical periodontal therapy in management of stage III periodontitis patients.

    Also known as: rosemary extract gel, local delivery drug, phytotherapy

  • DrugPlacebo Drug

    a placebo gel will be applied in deep pockets (\>5mm) in stage III periodontitis patients as an adjunct to non-surgical periodontal therapy

06

What researchers measure

Primary outcomes

  1. probing depth

    Will be measured from the gingival margin to the bottom of the periodontal pocket to the nearest mm. with use of UNC 15 periodontal probe.

    Time frame: change from baseline at 3 months

Secondary outcomes

  1. clinical attachment level, plaque index and gingival index

    \- Clinical attachment level (CAL): Will be measured from the CEJ to the depth of the periodontal pocket in millimeters. * Plaque index: 0 = No plaque in gingival area. 1. = A film of plaque adhering to the free gingival margin and adjacent area of tooth. The plaque may be recognized only by running a probe across the tooth surface. 2. = Moderate accumulation of soft deposit within the gingival pocket and on the gingival pocket and on the gingival margin and/or adjacent tooth surface that can be seen by naked eye. 3. = Abundance of soft matter within the gingival pocket and/or on the gingival margin and adjacent tooth surface. * Gingival index: 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

    Time frame: change from baseline at 3 months

  2. microbiological analysis

    Microbiological analysis to evaluate the antibacterial effect of rosemary extract gel on quantitative change of P.gingivalis and A.actinomycetemcomitans in the gingival crevicular fluid (GCF) using perio-papers. Analyzed samples will be done using real time PCR technique.

    Time frame: The bacterial load in the GCF sample will be assessed at baseline, 1 week and 1 month post-operatively.

07

Study locations

1 site
  • Faculty of Dentistry - Ain Shams University
    Cairo, 02, Egypt
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 13, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06601608
Lead sponsor
Ain Shams University
Responsible party
Roba abdelhamid mohamed elhady (Resident dentist at department of oral medicine and periodontology, Ain Shams University) — Principal investigator
First posted
Sep 19, 2024
Start date
Oct 20, 2024
Primary completion
Aug 2, 2025
Completion
Oct 11, 2025
Last update
Apr 13, 2026

Study contacts

Nevine Hassan Kheir El Din, Professor
study director · Faculty of Dentistry - Ain Shams University

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Apr 2026. You cannot join it, but the record below documents what was studied.

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