Findings from a caries risk assessment registry quality improvement initiative in an oral health partnership model.

Objectives: This quality improvement study evaluates the impact of a caries risk assessment (CRA) registry on the following: percentage of children with a documented CRA, receipt of preventive and restorative services, and costs of care.

Methods: We used 2014-2019 data for patients aged 0-17 years from 22 locations in a group practice in Wisconsin. Paired t-tests and Wilcoxon signed-rank tests were used to evaluate changes over time in the following practice-level outcomes: CRA documentation, fluoride receipt, continuing care procedures, restorative procedures, total procedures, and inflation-adjusted costs of care. The same tests were used to compare average procedures and cost for patients a) enrolled and not enrolled in the registry, b) with and without CRA documentation, and c) at high and low caries risk.

Results: CRA documentation increased from 13 percent in 2014 to 87 percent in 2019 (P < 0.0001). There were statistically significant increases in the average number of continuing care procedures (from 1.47 to 1.54, P < 0.001), average total procedures (from 7.40 to 8.36, P < 0.001), and inflation-adjusted average cost (from $491.51 to $553.37, P < 0.001) after accounting for multiple comparisons. The average number of restorative procedures decreased, with borderline statistical significance. Average cost was stable for registry-enrolled patients and increased for those not enrolled.

Conclusions: The registry achieved the primary goal of improving CRA documentation among children. This quality improvement initiative appears to have had value-enhancing effects by promoting increased receipt of preventive services and decreased restorative services, while maintaining stable average cost of care for registry-enrolled patients over time.