Historically, enrolment was from about 2 years old.
"In terms of managing early childhood dental decay, we really need to be seeing children as their teeth start to erupt into the mouth and that's about 12 months old," said Dr Whyman.
The aim was to have children enrolled by 12 months and continuing to see dentists through their pre-school years.
"The consequence of that is that we've got more visits going on within the community oral health service.
"Pre-school enrolment's important and we would like to see children early and keep them coming along to the oral health service so we can keep on top of stopping the disease from happening."
The initiative was also about talking to parents about what caused dental disease. Dr Whyman said most parents were doing well when it came to taking care of their children's teeth.
However, some parents didn't have all the information about what caused dental decay.
High levels of disease in children were nearly always related to high use of refined sugars.
Meanwhile, the Ministry of Health's latest health survey found 83.8 per cent of New Zealand children aged 1-14 years visited a dental practitioner in 2014.
That was 2.5 per cent more than in 2013 and 8.1 per cent more than in 2007.
Basic oral health care is free until the age of 18.
The survey found Maori children were 1.6 times more likely to have had a tooth extracted the 12 months than non-Maori, with one in 20 Maori children getting teeth removed due to decay.NZME