NIOM contributes to new WHO guideline on oral health care

The use of caries preventive materials, such as varnishes and sealants, particularly in young people and vulnerable groups, is implemented in the new WHO guidelines. The recommendations highlight less invasive care and environmental considerations in caries management.

On 19 March 2026, in connection with World Oral Health Day, the World Health Organization launches the WHO Guideline on Environmentally Friendly and Less Invasive Oral Health Care for Preventing and Managing Dental Caries.

NIOM, represented by Senior Researcher Ellen Bruzell, has contributed to the development of these international recommendations as part of the development group supporting the guideline process.

The work is linked to the implementation of the Minamata Convention on Mercury, which aims to reduce mercury pollution worldwide.

What is this about?

The use of caries preventive materials, such as varnishes and sealants, particularly in young people and vulnerable groups, is implemented in the guidelines. Both prevention and well-managed caries treatment can reduce the need for antibiotics, thereby contributing to mitigating antimicrobial resistance.

In Norway, mercury was phased out in dental treatment in 2008, initially for environmental reasons, which has given us more than 20 years’ experience with resin-based composite materials and glass-ionomers.

The focus on prevention and non-invasive materials is important, not only for young and vulnerable population, but they can also represent important aids in more turbulent times of less stable infrastructure.

Supporting NIOM’s strategic priorities

NIOM’s contribution to the guideline also reflects the institute’s broader mission. In the NIOM Strategy 2025–2030, one of the key priorities is to strengthen the knowledge base for safe, sustainable and evidence-based use of dental biomaterials. This includes increased emphasis on knowledge and implementation of systematic assessment approaches.

“The literature on which the guidelines are based has been assessed through critical appraisal. Such systematically evidence-based methods are used in several projects that NIOM researchers are involved in. We are currently building expertise on this topic”, says Ellen Bruzell.

Thus, participation in the WHO guideline development process demonstrates how NIOM contributes scientific expertise to international initiatives that aim to improve both oral health and environmental responsibility in dentistry.