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Enrolling by invitationNCT07169357Updated Nov 14, 2025

Testing the Efficacy of Photobiomodulation Therapy and Hyaluronic Acid Gel on Post-surgical Healing After Gingivectomy

An Early Phase 1 interventional study of Gengigel and LASER in Gingival Hyperplasia, Gingival Hypertrophy and Gingival Overgrowth, sponsored by Beirut Arab University. Enrolling by invitation at 1 site in Lebanon. Open to participants aged 18 Years to 40 Years. Per ClinicalTrials.gov, last updated 2025-11-14.

Sponsored by Beirut Arab University · Early Phase 1, Interventional, and Supportive care

From the registry’s dates

  • Primary completion was expected by Feb 2026, 9 months ago, but the record still lists the study as enrolling by invitation.
Phase
Early Phase 1
Study type
Interventional
Enrollment
38
Allocation
Randomized
Ages
18 Years to 40 Years
Sex
All
01

Study summary

This study consists of random patient selection and allocating them in 3 different groups. After being fit to be included according to the protocol's criteria and signing an informed consent, patients will be distributed after performing a dental surgery known as gingivectomy. Gingivectomy has been classified as the gold standard treatment option for the control of gingival enlargement. Wound recovery after gingivectomy and gingivoplasty occurs by secondary intention healing, thus post-surgical wounds can be strongly associated with discomfort, pain and delayed healing. For that reason, the first group will consist of 13 patients who will be exposed to hyaluronic acid gel or gingigel and photobiomodulation therapy to see if there is significant results in the post-operative healing phase. The second group will also consist of 13 patients who will undergo only photobiomodulation therapy. While the third group will have no clinical supportive care besides follow-up and analgesics upon request.

All the values will be determined by using scores such as Visual analogue scale for pain, Landry's index for healing assessment and oral health quality of life, which consists of 14 questions to asses the enhancement of everyday problems affected by dental situations.

Each case will be followed-up for 3 months post-operative.

Read the detailed description

The study group consisted of thirty-nine surgical gingivectomy wound sites on patients presenting with gingival hypertrophy on maxillary or mandibular anterior region. Groups will be randomly and equally divided into three groups, Group-A (Test Group 1): Surgical sites after gingivectomy procedures will be irradiated with diode laser (Photobiomodulation therapy) at (940 nm, 0.21 W) with a fiber tip diameter of 400μm for 30 seconds, then covered with HA Gel. Group-B (Test Group 2): Surgical sites will be irradiated with diode laser only at (940 nm, 0.21 W). Group-C (Control Group): No post-surgical therapy will be performed. Wound healing was assessed by implementing Landry, Turnbull and Howley Healing index, while pain perception was objectively evaluated by the patients using the visual analog scale (VAS). To further evaluate the patient's quality of life, Oral Health Impact Profile (OHIP-14) records will be obtained before and after gingivectomy.

02

Conditions studied

  • Gingival Hyperplasia
  • Gingival Hypertrophy
  • Gingival Overgrowth
  • Gingival Enlargement
  • Photobiomodulation Therapy
  • Low-level-laser Theraphy

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Keywords

  • LLLT
  • PBMT
  • GO
  • GE
03

In context

Gingival Overgrowth

18 studies on the registry are indexed under Gingival Overgrowth; 1 is open to participants now.

This study's planned enrollment of 38 is above the median of 30 across 17 interventional studies indexed under Gingival Overgrowth.

Browse Gingival Overgrowth studies →

Lead sponsor

Beirut Arab University is the lead sponsor of 16 studies on the registry; 6 are open to participants now.

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

04

Who can participate

Ages eligible
18 Years to 40 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Patient health , II
  • Average age from 18 to 40 years
  • Both genders
  • Chronic inflammatory gingival enlargement
  • Adequate amount of keratinized tissue.
  • Well educated patients as post-operative instructions need to be followed precisely.

Exclusion criteria

Exclusion Criteria:

  • Smokers
  • Bad oral hygiene
  • Allergy to Hyaluronic acid or cosmetic fillers containing H.A
  • Any patient under oral or drugs
  • Patients undergoing radiotherapy or chemotherapy
  • Pregnant or lactating mothers
  • Mentally disturbed patients
  • Excessive gag reflex
  • Patients who refuse to sign .
Terms in these criteria, in plain language(4)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

ASA physical status

The anaesthetists’ scale of health before surgery: I is healthy, II has a mild illness that is under control, III a severe one, IV a severe illness that is a constant threat to life. V and VI are used for the critically ill and for organ donors.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Phase
Early Phase 1
Primary purpose
Supportive care
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
38 participants (estimated)

Study arms

  • Active comparator
    test group (Group A)

    Surgical sites after gingivectomy procedures will be irradiated with diode laser (Photobiomodulation therapy) then covered with HA Gel.

    Drug: Gengigel · Device: LASER

  • Active comparator
    test group (Group B)

    Surgical sites will be irradiated with diode laser only

    Device: LASER

  • No intervention
    control group (group c)

    No post-surgical therapy will be performed

Interventions

  • The use of Gingigel or 0.2% hyaluronic gel is expected to enhance healing and decrease discomfort in the post-operative period. It exhibits viscoelastic characteristic which serves as osteo-conductive, anti-edematous, antifungal and bacteriostatic effects.

    Also known as: 0.2% hyaluronic acid gel

  • DeviceLASER

    PBMT has markedly been effective in reducing pain, inflammation, edema and postoperative discomfort. It is said to be a natural and effective alternative approach to minimize medicaments prescription such as analgesics, anti-inflammatory or antibiotic drugs. With that said, negative outcomes such as drug side effects, bacterial resistance and post-operative complications can be prevented, thus increasing the success of medical care and assuring a better quality of life

    Also known as: Low-level-laser therapy, low-intensity lasers, non-thermal lasers, cold lasers

06

What researchers measure

Primary outcomes

  1. Landry's healing index

    to asses the wound healing progress post-surgically in the 3 groups and see how photobiomodulation therapy and the application of hyaluronic acid can enhance the post-operative period. Five variables are assessed: tissue color, bleeding on palpation, the presence of granulation tissue, the incision margin and suppuration. It ranges from 1 to 5, with 1 indicating poor healing and 5 indicating excellent healing

    Time frame: Wound healing assessed by implementing Landry, Turnbull and Howley Healing index on the 3rd, 7th, 14th, 21st day, 1 month, 2 months and 3 months after the post-surgical procedure.

  2. Visual analogue scale

    to asses the subjected level of pain by the patient throughout the healing process with a minimum score of 0 meaning no pain (best) and a maximum score of 10 meaning severe pain (worse)

    Time frame: Pain perception will be evaluated by using the visual analog scale on the 3rd, 7th, 14th, 21st day and 1 month of periodic follow-up

Secondary outcomes

  1. Oral health impact profile 14 questions

    to asses the quality of life of patients prior the surgery due to their condition to asses the enhancement of the patient's condition after the surgery and asses how the post-operative interventions bettered their post-operative experience. To asses the condition you sum the numerical values of each of the 14 items with a 5-point likert scale 0= never 1= hardly ever 2= ocassionally 3=fairly often 4= very often then you sum the scores of all 14 question to get a total score from 0-56. closer to 56 = greater negative impact of oral health problems on the quality of life closer to 0 =better oral-health related quality of life

    Time frame: pre-operative post-operative - on the 7th day - on the 14th day

07

Study locations

1 site
08

References and documents

Publications

  • Yakout BK, Kamel FR, Khadr MAEA, Heikal LAH, El-Kimary GI. Efficacy of hyaluronic acid gel and photobiomodulation therapy on wound healing after surgical gingivectomy: a randomized controlled clinical trial. BMC Oral Health. 2023 Oct 27;23(1):805. doi: 10.1186/s12903-023-03519-5. PubMed 37891549 ↗

Individual participant data

Plan to share: No

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Started Nov 2025 (actual). Primary completion is estimated for Feb 2026, 3 months after the start.

How these figures are worked out, and which studies are left out of them.

Registered
Sep 5, 2025
First posted
Sep 11, 2025
StartActual
Nov 11, 2025
Primary completionEst.
Feb 11, 2026
CompletionEst.
Nov 2026
Last update
Nov 14, 2025
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Nov 14, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07169357
Lead sponsor
Beirut Arab University
Responsible party
Hanan Rabih Danaf Naim (Principal Investigator, Beirut Arab University) — Principal investigator
First posted
Sep 11, 2025
Start date
Nov 11, 2025
Primary completion
Feb 11, 2026 (estimated)
Completion
Nov 2026 (estimated)
Last update
Nov 14, 2025

Study contacts

Rania Abdel Fahmy, Phd
study director · Beirut Arab University
Nayer Abo Saad, Phd
study chair · Beirut Arab 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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Studies of the drug tested here: Hyaluronic Acid

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