Tooth decay remains a significant problem for New Zealand children, and recent research shows there is evidence of a link between poor maternal oral health and early childhood dental decay.

"A key part of the Government's investment in oral health is to increase prevention and early intervention activities to reduce both the level and severity of dental disease amongst children. While the evidence is limited, it suggests that the sooner we focus on child oral health, the better," Chief Dental Officer Dr Robin Whyman said.

The Ministry commissioned the Murdoch Children's Research Institute to review the evidence linking the general and oral health of mothers with the oral health of their children. The report Maternal and Child Oral Health - Systematic Review and Analysis is available on the Ministry website.

National and international studies were reviewed. While cause and effect could not be determined from the available evidence, almost all studies found that the oral health status of parents (mostly mothers) was related to the oral health of their children.

The report therefore recommends targeting oral health promotion and interventions to pregnant women and those with young children, particularly those in high-risk populations.

The Institute's review also found that: information on the levels of dental disease of New Zealand children under five years old is poor. there is some evidence of a relationship between periodontal (gum) disease in the mother and poor birth outcomes, such as low birthweight. the benefits of fluoridated water and toothpaste to support maternal and child oral health remain important. Dr Whyman said the Ministry will be organising three workshops around the country in November to discuss the report's findings with service providers and other key stakeholders.

" The findings help the Ministry to provide evidence-based guidance to the sector on effective programmes to reduce early childhood decay. A key aim of the workshops is to encourage health providers to use the available information when reviewing or developing oral health services for preschool children, and to stimulate further research questions, " he added.