How to look after your teeth

The different "plaque trajectories" of good, so-so and very bad teeth-brushers in The Dunedin Study confirm dental hygiene is a long game that rewards commitment, says Otago University professor Murray Thompson. "No dental disease occurs quickly. It's all slow and cumulative and so is the care that we have to take care of ourselves in order to avoid it …. It's important to do it well and to do it, well, day after day after day," he tells Jesse Mulligan.