Look deeper at the first photo. That isn't even a real dentist. Those are not medical/laser safety glasses. They look like they came out of a carpenter's toolbox. And look at the tool in his right hand (camera left). We have all been eye-to-hook with the various dental implements. That doesn't look like any tool i've ever seen. I think it is a prop, a blunt tool so that actors don't cut themselves.

If the BBC is going to use a stock image, at least use the one of a real dentist.

(I can forgive the faked scratches on the glasses. That was probably done so we don't see the reflected image of the camera lens.)