Lay Summary : The Toothbrushing Boost Toolbox: Competence-Building Behavioural Strategies for Oral Health

Anand, S., Claassen, M. A., Riedy, C. A., & Hertwig, R. Perspective article, Frontiers in Public Health (Public Health Education and Promotion)

Good oral health is essential to overall health and well-being, yet oral disease remains the most prevalent noncommunicable disease in the world, affecting an estimated 3.7 billion people and imposing an annual economic burden of roughly US$710 billion. Most people already know they should brush properly, floss, and visit the dentist regularly. The difficulty lies elsewhere: turning that knowledge into a consistent daily habit. This gap between awareness and action is one that education alone struggles to close.

This paper argues that improving oral health requires more than information. It requires helping people build practical skills and routines that make healthy behaviours easier to sustain. Approaches from the behavioural and social sciences remain poorly integrated into oral health promotion, and where they have been applied, meta-analytic evidence suggests the effects are typically weak.

The authors also highlight a significant gap in research. Despite the importance of oral health, behavioral science has been applied far less frequently to dentistry than to other health areas such as physical activity or nutrition. A bibliometric review carried out for this paper found only 360 publications linking behavioural science to oral health between 2000 and 2024, a fraction of what exists in domains such as physical activity or nutrition, with relatively few rigorous trials able to draw a clear causal link between an intervention and behaviour change.

The authors propose an alternative approach from behavioural science called “boosting.” Unlike interventions that simply encourage healthier choices or subtly steer behaviour, boosting focuses on teaching simple, memorable strategies that build lasting competences while preserving people’s autonomy. The aim is to close the gap between knowing what to do and actually doing it, consistently.

To illustrate this approach, the paper introduces the Toothbrushing Boost Toolbox, a set of practical techniques designed to make toothbrushing more automatic and effective:

• To fix a lack of motivation: Use temptation bundling (“First brush, then fun”), like promising yourself you won’t check your phone in the morning until your teeth are brushed.
• To turn intentions into action: Use habit stacking (“First, then”), like tying toothbrushing directly to an existing daily ritual, such as taking your daily medication or waking up.
• To help new habits take hold: Task chunking (“Four-corner brushing”), dividing the mouth into four sections and brushing each for 30 seconds to reliably reach a full two minutes.
• To keep the routine going: Sensory reframing (“Spit, don’t rinse”), where the lingering mint taste after brushing is reinterpreted as a helpful cue, an active layer of fluoride protection, rather than residue to be washed away

These strategies are intended to reduce reliance on motivation and willpower alone, helping people establish habits robust enough to persist under everyday constraints such as fatigue or time pressure. They are low-cost, simple to communicate, and adaptable across age groups, literacy levels, and cultural contexts, whether delivered in a dental clinic, a school programme, or a public health campaign.

The authors also highlight that oral health is a particularly well-suited area for studying behaviour change more broadly. Toothbrushing is a simple, repeatable behaviour that can be measured objectively over time, unlike more complex behaviours such as dietary change, making it a valuable model for behavioural science research.

Finally, the paper is clear that behavioural strategies alone cannot solve oral health problems. Lasting improvement also depends on system-level reform, including affordable preventive care, accessible hygiene products, and policies that reduce barriers to treatment. The authors argue that combining these structural reforms with practical, evidence-based behavioural tools offers the most promising route to improving oral health, and reducing oral health inequities, at a population level.

Aron N. Weinberg, Ph.D.
Somerville, MA
e: aron_weinberg@mail.harvard.edu;