Lego could encourage people to have invisible braces fitted during February half-term.
Two life-size Lego heads are to go on display at the V&A Museum of Childhood in London between February 22nd and 28th 2011, Dentistry.co.uk reports.
Part of the British Orthodontic Society's second National Orthodontic Week, they will illustrate how mouths can be altered before being treated with orthodontics and afterwards.
A competition will also be held to guess the number of bricks each one took, while visitors will be able to meet an orthodontist to ask any questions they may have.
It is hoped that the initiative could encourage people who may have been putting off getting invisible braces for themselves or their children to change their minds.
In October 2010, a survey carried out by Disney voted Lego the nation's favourite toy to pass down to future generations, beating the teddy bear into second place and the Rubik's cube into third.