Systematic review finds early evidence that CBD may help with oral pain and inflammation

Across six RCTs and one non-randomized trial, topical and intraoral CBD reduced pain, muscle tension, gingival inflammation, bacterial load, and aphthous ulcer symptoms, with no serious adverse effects. However, heterogeneity across studies prevented meta-analysis.

Researchers followed PRISMA 2020 guidelines and searched five databases. From 4,093 records, seven clinical studies met inclusion criteria: six randomized controlled trials and one non-randomized study evaluating CBD effects on various oral disorders.

Dental pain and oral inflammation affect millions of people, yet current treatments often rely on NSAIDs or opioids with significant side effect profiles. CBD applied directly to the mouth could offer a localized, low-risk alternative if validated by larger trials.

The included studies covered a range of oral conditions, which makes the consistent positive signal across different applications noteworthy. However, the small number of studies, varying dosages, different formulations, and inconsistent outcome measures mean the evidence base is still in its infancy.

Only seven studies qualified, with varying CBD dosages, formulations, and follow-up durations that prevented direct comparison or meta-analysis. Most studies had small sample sizes. Long-term safety data for oral CBD products are lacking.