Motivational Interviewing and Childhood Caries: A Randomised Controlled Trial.

BACKGROUND

This study tested the occurrence of early childhood caries (ECC) and changes in potential mediators of ECC after an early childhood oral health promotion intervention.

METHODS

Consenting parent/child dyads in Western Australia were randomised into test [motivational interviewing (MI) + anticipatory guidance (AG)] or control (lift the lip assessments by child health nurses). A questionnaire at baseline and follow-ups (at 18, 36 and 60 months) evaluated the parental factors and the children clinically examined. Data were analysed using parametric and non-parametric tests for two groups and paired comparisons. Multivariable analysis used negative binomial regression with robust standard errors for over-dispersed count data and effect estimates presented as incidence rate ratios.

RESULTS

Nine hundred and seventeen parent/child dyads were randomised (test = 456; control = 461). The parental attitude toward a child's oral hygiene needs improved among the test group at the first follow-up ( = 377; baseline 1.8, SD 2.2, follow-up 1.5, SD 1.9, = 0.005). Living in a non-fluoridated area and parents holding a fatalistic belief increased the risk of caries (IRR = 4.2, 95% CI 1.8-10.2 and IRR = 3.5, 95% CI 1.7-7.3), respectively, but MI/AG did not reduce the incidence of dental caries.

CONCLUSION

The brief MI/AG oral health promotion intervention improved parental attitude but did not reduce ECC.