Ozonated oil in wound healing: what has already been proven?

Background

Chronic and hard-to-heal wounds - including cutaneous ulcers, burns, aphthous ulcers, gingivitis and dermatitis - remain a persistent clinical challenge, particularly in patients with diabetes mellitus, atherosclerosis, or those affected by the natural ageing process. Standard wound care does not always resolve these lesions quickly, prompting interest in adjunct therapies. Topical ozone, delivered either as a gas or dissolved into a carrier oil, has been proposed as one such option because of its reported antimicrobial, immunological, antioxidant and oxygenating properties.

Study design

This was an integrative literature review rather than a clinical trial. The authors searched Portuguese-, English- and Spanish-language literature and selected 28 articles - spanning laboratory, animal and human studies of varying design - that examined the topical use of ozonated oil in wound-related contexts, including cutaneous wounds, aphthous ulcers, gingivitis and burns.

Findings

Across the studies reviewed, topical application of ozonated oil was repeatedly associated with faster healing of cutaneous wounds, reduced microbial load at the wound site, modulation of local inflammation, and support for the formation of new blood vessels (angiogenesis). Additional benefits reported in individual studies included relief of burn-related symptoms and reduced pain associated with aphthous ulcers. The authors noted that the quality and design of the underlying studies varied considerably, with many relying on animal models or small human samples rather than large controlled trials.

What the authors concluded

The review's authors concluded that ozonated oil is effective in supporting the healing of cutaneous wounds and represents a promising, low-cost complementary therapy. They suggested it could be a useful integrative option for patients with diabetes mellitus, atherosclerosis, or age-related wound-healing difficulties, and proposed it may have a role within public health systems, while stressing that further clinical validation is still needed.

Limitations of this study

As an integrative review rather than original research, this paper's conclusions are only as strong as the studies it draws on. Many of the 28 included articles were animal studies or small human case series rather than large randomised controlled trials, and study designs, ozone concentrations and outcome measures varied widely between them, making direct comparison difficult. The search was also limited to three languages, which may have excluded relevant research published elsewhere, and no formal statistical pooling (meta-analysis) of results was carried out. The findings should therefore be read as an indication of a promising research direction rather than definitive proof of clinical efficacy.