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This cluster-randomized pragmatic (effectiveness) trial tested maternal counseling based on Motivational Interviewing (MI) as an approach to control caries in indigenous children. Nine Cree communities in Quebec, Canada were randomly allocated to test or control. MI-style counseling was delivered in test communities to mothers during pregnancy and at well-baby visits. Data on outcomes were collected when children were 30 months old. Two hundred seventy-two mothers were recruited from the 5 test and 4 control communities. Baseline characteristics were comparable but not equivalent for both groups. At trial's end, 241 children had follow-up. The primary analysis outcome was enamel caries with substance loss (d2); no statistically significant treatment effect was detected. Prevalence of treated and untreated caries at the d2 level was 76% in controls vs. 65% in test (p = 0.17). Exploratory analyses suggested a substantial preventive effect for untreated decay at or beyond the level of the dentin, d3 (prevalences: 60% controls vs. 35% test), and a particularly large treatment effect when mothers had 4 or more MI-style sessions. Overall, these results provide preliminary evidence that, for these young, indigenous children, an MI-style intervention has an impact on severity of caries (clinical trial registration ISRCTN41467632).

Young children with extensive dental decay often require a general anesthetic (GA) to enable dental treatment. The purpose of this study was to develop a grounded theory to help our understanding of the processes that influence parental adoption of dentally healthy behaviors following the experience of their child's "dental general anesthetic." Twenty six interviews were conducted. Data were analyzed and a conceptual model was generated. Overall, the dental GA experience had an immediate, but short-lived, impact on parental behavior change. Parents had difficulty over time maintaining these behaviors. Social influences, family context, and parenting strategies were the key categories that influenced parental behavior change; however, parenting strategies occupied the central position in the model. Cultural beliefs, actions of dental professionals, and media/advertising were some of the identified barriers to behavior change. Those parents who were more confident in their ability to successfully carry out dentally healthy practices were more likely to maintain them over time.

The objective of this project was to design, implement and evaluate an oral health promotion program for inner-city Vietnamese preschool children in Vancouver, British Columbia, Canada. The project comprised of four general phases: information-gathering, project planning, project implementation, and project evaluation. The information-gathering phase of the project demonstrated extensive tooth decay in young children, bottle use during the day and during sleep-time long past recommended weaning age, and a belief of many parents that primary teeth were not important. Based on this information, the project planning committee designed a program that featured one-to-one counseling supported by community-wide activities. A Vietnamese lay health counselor provided counseling to mothers with telephone follow-up that coincided with scheduled infant immunization visits to a twice-monthly Child Health Clinic for Vietnamese families. At all the follow-up assessment clinics scheduled over the 7-year duration of this continuing project, mothers who had had more than one counseling visit reported significantly less use of sleep-time and daytime bottles for their children, and their children demonstrated significantly reduced prevalence of caries compared to similarly aged children at baseline. One-to-one counseling with regular follow-up provided by a lay person of similar background and culture to the participants is an effective way to facilitate adoption of healthy behaviors and to improve oral health of children.