Caries risk assessment estimates the likelihood of new or progressing lesions by combining current disease indicators, biological and behavioural risk factors, and protective factors. It should lead to a documented, personalised prevention and review plan—not remain a form completed without action.
Contents
What should be assessed?
Recent cavitated or active non-cavitated lesions, restorations placed because of caries, visible plaque, frequent fermentable carbohydrate exposure, fluoride exposure, saliva-related conditions, exposed roots, appliances and social or medical barriers all inform risk. Previous disease is a particularly important predictor, but professional judgement must consider the complete pattern.
A practical clinical workflow
- Detect and assess lesion activity using clean, dry teeth and appropriate radiographs.
- Identify disease indicators, risk factors and protective factors.
- Assign a provisional risk category and explain the main drivers to the patient.
- Agree achievable changes in fluoride use, diet, plaque control and professional prevention.
- Manage existing lesions according to activity, cleansability, depth and restorability.
- Set recall and radiographic review according to risk, then reassess rather than carrying the category forward indefinitely.
Risk-to-action table
| Finding | Meaning | Possible action |
|---|---|---|
| New or active lesions | Current disease activity | Intensify prevention and manage lesions |
| Frequent sugar exposure | Repeated acid challenge | Set a specific frequency-reduction goal |
| Low fluoride exposure | Reduced remineralisation support | Optimise age- and risk-appropriate fluoride |
| Dry mouth or cariogenic medication | Impaired salivary protection | Address cause, hydration and enhanced prevention |
| Stable surfaces with strong protective factors | Controlled risk | Maintain care and lengthen review only when justified |
Measure whether the plan is working
At review, compare lesion activity, plaque, behaviours, fluoride use and any new restorations with the baseline. A risk category can rise or fall. Avoid using a checklist as a diagnostic test with perfect accuracy; risk assessment supports shared decisions and should be updated when circumstances change.
Related DentalReach reading
- selective approaches to deep caries
- silver diamine fluoride and remineralisation
- SDF research in permanent molars
Frequently asked questions
Is caries risk fixed for life?
No. Risk changes with disease activity, diet, fluoride exposure, saliva, medical status and adherence.
Does high risk mean every lesion needs a restoration?
No. Risk guides prevention intensity; lesion activity, cavitation, cleansability and depth guide lesion management.
Should radiographic intervals be identical for everyone?
No. Selection and timing should reflect age, disease history, clinical findings and current risk.
References
- ADA caries risk assessment and management.
- CariesCare International practice guide.
- ADA caries risk assessment forms and instructions.
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