The eccentric actress - who has seven-year-old son Billy and three-year-old daughter Nell with long-term partner Tim Burton - is fascinated by the prosthetics she dons for her movies and likes to keep them after she finishes shooting.
She said: "We have an appreciation of bad teeth, me and Tim. I`ve got a whole cupboard full of them at home."
Helena and Tim famously live in adjoining houses in London but the 44-year-old beauty insists their home life is not as outlandish as people have speculated.
She told Total Film magazine: "They think we`re like the Addams Family. But do you know what? I think that is all rather marvellous. The more myths that follow you, it`s a more protective shell around you.
"I`ve got a happy relationship, I`ve got two beautiful kids and I`m having a lot of fun.
"We might not believe in hair brushes or combs but on the whole, fundamentally, our emotional make-up is the same."