Gibson's ex claims Mel knocked her teeth out

Mel Gibson knocked his ex-girlfriend’s teeth out during a violent row, it has been claimed.

Oksana Grigorieva filed for a restraining order against the 54-year-old actor last week and though the exact details of the document are being kept hidden, friends of the Russian singer – who has an eight-month-old daughter, Lucia, with Mel – say she took legal action in a bid to protect herself.