NCT07199712

Ozone Therapy for Oral Mucositis in Patients Receiving Head and Neck Cancer Radio- and Chemotherapy

Ozone Therapy for the Treatment of Oral Mucositis and/or Stomatitis in Patients Undergoing Radio- and Chemotherapy in the Head and Neck District: A Prospective Clinical Trial

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 58 (actual)
• Sponsor: University of Pavia · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

Oral mucositis is a frequent and painful side effect of radio- and chemotherapy, especially in patients with head and neck cancer. It can cause severe discomfort, difficulty eating and swallowing, infections, and interruptions of cancer treatment. This study evaluates the effectiveness of ozone therapy, delivered both professionally in the dental clinic and at home with ozone-based toothpaste, mouthrinse, and gel, in reducing symptoms of oral mucositis and stomatitis. Fifty-eight adult cancer patients with oral mucositis of at least WHO grade 1 are included. Professional ozone therapy sessions are performed in-office, combined with daily home use of ozonated products. The main goal is to determine how many days are needed for lesions to heal (WHO ≤ 1). A secondary goal is to measure pain reduction using a visual analogue scale (VAS). This research aims to provide evidence for a supportive care protocol that may improve quality of life, reduce treatment complications, and support cancer patients during therapy.

Detailed description

Oral mucositis and stomatitis are common toxicities in patients receiving radiotherapy, chemotherapy, or combined treatment for cancer, particularly in the head and neck region. These lesions significantly impair oral function, nutrition, and quality of life, and can lead to treatment interruptions and increased risk of infection. Current management options are limited and mainly supportive. Ozone therapy (O₃) has demonstrated antibacterial, antifungal, antiviral, anti-inflammatory, and analgesic properties. In dentistry and oral medicine, it has been applied to promote mucosal healing, modulate inflammatory responses, and enhance local circulation. This study investigates the combined use of professional in-office ozonotherapy and domiciliary application of ozonated toothpaste, mouthrinse, and gel for the treatment of oral mucositis and/or stomatitis in cancer patients. Fifty-eight patients are enrolled and followed over multiple time points (baseline to day 15). The primary endpoint is the time to clinical response, defined as improvement to WHO grade ≤ 1. Secondary endpoints include reduction in pain intensity assessed by the Visual Analogue Scale (VAS), as well as exploratory comparisons between patients with head and neck cancers and those with malignancies in other anatomical sites. The trial is designed as a prospective, interventional, single-arm, open-label study. Statistical analyses will include descriptive statistics, repeated measures ANOVA or non-parametric equivalents, with significance set at p\<0.05.

Conditions

• Oral Mucositis
• Oral Stomatitis
• Head and Neck Cancer Squamous Cell Carcinoma
• Radiotherapy Induced Mucositis
• Chemotherapy Induced Mucositis

Interventions

Type	Name	Description
OTHER	Ozone Therapy (In-Office and Home-Based Treatment)	The intervention consists of professional in-office ozone therapy delivered with the Ozono DTA device (Sweden-Martina) applied to oral mucosal lesions. The first treatment is administered at baseline and additional sessions are performed at 48 hours, day 5, day 8, day 12, and day 15, if clinically required. Alongside in-office therapy, participants perform a 15-day domiciliary regimen with ozonated oral care products, including toothpaste with 2% ozonated sunflower oil, a mouthrinse with 4% ozonated sunflower oil solution, and a topical gel with 15% ozonated sunflower oil, each used twice daily. Clinical outcomes are assessed at each visit from baseline to day 15 with the WHO oral mucositis scale and the Visual Analogue Scale for pain.

Timeline

• Start date: 2025-10-01
• Primary completion: 2025-11-15
• Completion: 2025-11-20
• First posted: 2025-09-30
• Last updated: 2025-11-25

Locations

1 site across 1 country: Italy