Bollywood actor Madhuri Dixit has joined Oral B Smile India Movement as the chief smile officer to promote a mission to ''Protect a Billion Indian Smiles, One at a time'' with the help of 10,000 dentists across the country. The mission was launched Tuesday from the Maulana Azad Medical College here, heralding the cause of protecting the Indian smile. The Oral B Smile Survey conducted by independent researcher AC Nielsen amongst 803 consumers and 201 dentists in Mumbai, Delhi, Kolkata and Bengaluru states that as many as 89 per cent respondents in Delhi, 65 per cent in Bengaluru, 25 per cent in Kolkata and 19 per cent in Mumbai feel that India as a nation smiles less than other countries. A majority of 76 per cent of dentists notice that patients with poor oral hygiene tend to smile less. visit for more information: http://www.indiantelevision.com/mam/headlines/y2k12/jan/janmam39.php