It was going to her dad's get-together with dentist pals that prompted Celia Grace to have a documentary made about the annual event - with its fun and its dentist jokes.
"[The reunion] has always been an annual highlight for him, and when I finally got to go I could see why. I was struck by the deep friendship of this small group of increasingly frail men, and their ability to have so much fun," she said.
Grace's father is retired Whanganui dentist Darrell Grace, who was 95 when the documentary was filmed in 2017.
The result is the 15-minute film The Dental Reunion. It is one of 80 viewable free online in the 15th Documentary Edge Festival, which runs from June 12 to July 5.
The festival will be the documentary's premiere.