The video shows dentist Seth Lookhart gliding into an exam room on a hoverboard, pulling a tooth from the sedated patient, and then spinning around in the hallway.

Mr Lookhart, who practised as a dentist in the Alaskan capital of Anchorage, is on trial for unnecessarily sedating patients for his own financial benefit, Anchorage Daily News reports.

Speaking at the opening of the trial, his lawyer Paul Stockler said: “I want you to know that as his lawyer, I apologize for what he did on that hoverboard.

“It’s unacceptable and you can be assured that when I agreed to represent him, I got in his face and told him what I thought about him for doing this, which I think needed to be done.”

The patient told the court that she thought the hoverboard extraction was “outrageous, narcissistic and crazy”, but that she had forgiven him.