There is also the link between gum disease and premature birth and low birth weight, and tooth loss before age 35 possibly being a risk factor for Alzheimer's disease.
There are many reasons why dental care is expensive. The cost and length of training, the cost of equipment and products, and associated services like lab work and x-rays.
Perhaps people need to be more aware of how to spread the costs of a dental bill, or we may need improved dental health insurance schemes. Fortunately, technology is playing a part in managing costs with advances such as dental sealant to reduce cavities.
But the essential bit is to get cheaper dental services into communities.
More of New Zealand's health dollar needs to be directed toward teeth.