Dairy and dental health

This white paper examined the relationship between dairy consumption and dental health outcomes across the lifespan, synthesising evidence to support evidence-informed public health messaging and industry education.

The brief

To review and synthesise the scientific literature linking milk, cheese and yoghurt consumption with dental health outcomes, including dental caries, erosion and tooth loss, and to translate findings into an accessible, evidence-based resource aligned with the Australian Dietary Guidelines.

The context

Oral disease remains one of the most prevalent non-fatal health burdens in Australia. In 2019, 99% of non-fatal dental-related disease burden in children was attributed to dental caries. Tooth decay remains highly prevalent across all age groups, with the average number of decayed, missing or filled teeth increasing significantly with age.

At the same time, national nutrition data indicate that only 10% of Australians consume the recommended number of dairy serves. Low dairy intake has been associated with higher rates of dental caries, erosion and tooth loss.

This project sought to clarify dairy’s role within oral health promotion, particularly in the context of evolving dietary guidance and public misconceptions surrounding sugars, acidity and dental risk.

The evidence

The review synthesised evidence demonstrating that milk, cheese and yoghurt are not associated with dental erosion.

Key findings included:

– Hard cheese stimulates salivary flow, supporting acid neutralisation following sugar exposure.

– Plain milk and yoghurt have neutral or beneficial effects on teeth

– Lactose, the naturally occurring sugar in dairy, is not linked to dental caries

– Calcium, phosphorus and casein contribute to enamel protection and remineralisation

The white paper also explored the bi-directional relationship between oral health and nutrition, recognising that poor dentition can impair dietary quality, while unhealthy dietary patterns can contribute to dental disease.

Importantly, the resource contextualised dairy within the Australian Dietary Guidelines, highlighting recommended serve intakes across age groups and clarifying the evolving evidence around reduced-fat versus regular-fat dairy within a “dairy matrix” framework.

Translation into practice

The white paper translated complex dental, nutritional and epidemiological evidence into clear, actionable public health messaging suitable for:

– Healthcare professional education

– Industry communication

– Consumer-facing materials

– Policy-aligned advocacy

It provided practical guidance around recommended daily serves, examples of portion sizes, and behavioural strategies to reduce sugar-sweetened beverage intake through dairy substitution.

By grounding messaging in high-quality evidence and aligning it with national guidelines, the resource supported consistent, defensible communication around dairy’s role in oral health promotion.

To read the position paper, click here.

If you require support with white papers, evidence synthesis, scientific position statements or guideline-aligned public health resources, we welcome enquiries via our contact page: https://nprconsulting.com.au/contact/