Madonna — who’s made headlines for her bizarre gold tooth grill, with 24 diamonds, while in Rome to prep her gym, Hard Candy, for an October opening there — was spotted having a heart-to-heart chat with teen daughter Lourdes. “After a day of inspecting progress on [the gym], Madonna and Lourdes had a night out,” said a spy who saw the pair at restaurant Antica Pesa. “They were both in head-to-toe black, and in deep conversation,” we’re told. No word if M took out her gold teeth to eat.