A recent survey by the Ministry of Health showed one in three kiwi adults had untreated coronal decay, and one in ten had root decay.
That is a lot of bad teeth, a lot of pain, and to get it fixed is a lot of money.
So in an effort to get that message across - and fix a whole bunch of rotten teeth at the same time - Colgate and the New Zealand Dental Association are running two days of free dental care for in-need patients.
As Tristram Clayton reveals, some of that care is long overdue, and desperately needed.
Watch the video for the full report