Clinical trial Recruiting at 1 site Interventional Ages 18 and up

Ozone gas plus biomimetic toothpaste and mouthwash to treat cancer therapy mouth sores

Official title: Combined Gas Ozone Therapy and Biomimetic Oral Care in the Management of Radio- and Chemotherapy-Induced Oral Mucositis: A Randomized Controlled Clinical Trial

Run by University of Pavia · NCT07491536 · Data updated 2026-11-12

This trial will test whether adding a biomimetic toothpaste and mouthwash to ozone gas therapy helps adults with chemo- or radiotherapy-induced mouth sores heal faster and have less pain.

More Head and Neck Neoplasms trials

Quick facts

Study typeInterventional
Ages18 Years and up
SexAll
Enrollment50 (estimated)
SponsorUniversity of Pavia
Academic / other
Drugs / interventionschemotherapy
Locations1 site (Pavia, Lombardy)
StatusRecruiting
StartedMarch 1, 2026
Main results expectedDecember 1, 2026
Study endsDecember 15, 2026
Registry record updatedMarch 24, 2026
Trial IDNCT07491536 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults (≥18) undergoing oncologic treatment for solid tumors, especially head and neck cancers, who have WHO grade 1–3 radio- or chemotherapy-induced oral mucositis and can comply with clinic visits and home oral care are the ideal candidates.

Probably not a fit

Patients with grade 4 mucositis, active oral infections, non-oncologic mucosal diseases, very recent high-dose head and neck radiotherapy, or who cannot perform domiciliary care are unlikely to benefit from this protocol.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This is a monocentric, randomized, controlled, parallel-group trial at the University of Pavia comparing gas ozone therapy alone versus gas ozone therapy combined with a structured biomimetic oral care regimen (toothpaste and mouthwash) in adults with radio- or chemotherapy-induced oral mucositis. Eligible patients with WHO grade 1–3 mucositis are randomly assigned to one of the two arms and receive outpatient ozone applications plus home oral care as assigned. Outcomes include changes in mucositis severity, pain, oral function, and need for oncologic treatment modification. The protocol emphasizes standardized ozone delivery and a domiciliary biomimetic regimen to measure any added clinical benefit.

Why it matters

Potential benefit: If successful, the combined approach could reduce mucositis severity and pain, improve eating and oral function, and lower the risk of cancer treatment interruptions.

How similar studies have gone: Small dental and experimental studies suggest ozone can have antimicrobial and wound-healing effects, but robust randomized data specifically for cancer therapy-induced oral mucositis are limited.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age ≥ 18 years
* Confirmed diagnosis of radio- and/or chemotherapy-induced oral mucositis, grade 1-3 according to the WHO Oral Toxicity Scale
* Undergoing oncologic treatment for solid malignancies, particularly head and neck cancers
* Clinically stable general health condition (ASA physical status I-III)
* Ability to understand and comply with study procedures, including domiciliary treatment and questionnaire completion
* Written informed consent provided

Exclusion Criteria:

* Oral mucositis grade 4 according to the WHO Oral Toxicity Scale
* Active fungal or bacterial oral infections (e.g., candidiasis, ulcerative stomatitis)
* Traumatic ulcers, non-oncologic mucositis, or concomitant oral mucosal diseases (e.g., lichen planus, pemphigus, graft-versus-host disease)
* Ongoing head and neck radiotherapy with cumulative dose \>70 Gy or completion within 7 days prior to enrollment
* Use within 14 days prior to enrollment of mouthwashes, sprays, or gels containing hyaluronic acid, ozone, aloe vera, or similar bioactive agents
* Systemic or topical therapies known to interfere with salivary function or mucosal healing (e.g., anticholinergics, tricyclic antidepressants, diuretics)
* Known allergy or hypersensitivity to components of the oral care products or materials used during ozone therapy
* Severe or uncontrolled systemic diseases (including hepatic, renal, respiratory, or cardiac insufficiency)
* Severe immunosuppression or neutropenia (neutrophils \<1,000/mm³)
* Pregnancy or breastfeeding
* Alcohol or substance abuse, or any condition that may compromise adherence to the protocol
* Inability to attend scheduled follow-up visits through Day 30

Where it's running

  • Unit of Orthodontics and Pediatric Dentistry - Section of Dentistry - Department of Clinical, Surgical, Diagnostic and Pediatrics - University of Pavia
    Pavia, Lombardy, Italy
    Recruiting

Study contacts

  • Principal investigator: Andrea Scribante, Associate Professor — University of Pavia
  • Study coordinator: Andrea Scribante, Associate Professor
  • Email: andrea.scribante@unipv.it
  • Phone: +39 0382516223

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.