Improving the overall health of our hospitalized patients by maintaining their oral health. #HospitalDentistry
In healthcare, high-tech solutions often overshadow basic care. However, the results of the HAPPEN Study (Hospital Acquired Pneumonia PrEveNtion), presented at the ESCMID Global 2026 congress in Munich, prove that hospital oral hygiene is a powerful prevention tool.
The Origin: Why Oral Hygiene was “Missed Care” (2024)
Before the clinical trial, national research led by Prof. Brett Mitchell (DOI: 10.1016/j.idh.2024.04.006) identified a critical gap in care. Despite evidence suggesting that oral microbiota colonizes the respiratory tract, only 45% of surveyed professionals considered toothbrushing a top priority. Factors such as lack of materials and time turned this basic care into a secondary task.
HAPPEN Study 2026 Results: Clinical Evidence
The trial, involving 8,870 patients in Australian hospitals, implemented a protocol based on hygiene kits and specific staff training. The data published in the Munich Abstract Book (O0611) are compelling:
- Risk Reduction: The risk of non-ventilator hospital-acquired pneumonia (NV-HAP) plummeted by 57% (HR: 0.43).
- Incidence: The rate dropped from 0.87 to 0.39 cases per 100 admission days.
- Adherence: Thanks to the protocol, oral hygiene practice rose from 12.6% to 65%.

Conclusion: Our Duty to Lead with Evidence
This scientific milestone reminds us that our work in classrooms and clinics goes beyond textbooks. As faculty and students, we have an ethical commitment to stay current with the latest scientific literature. Adopting evidence-based protocols, no matter how simple they may seem, is the key to transforming patient safety and reducing hospital mortality.











