In the film, posted by American social media evangelist Joshua Feuerstein, the woman challenges her dentist on why he doesn't believe god is real, replying that she "doesn't believe in dentists".
Her dentist says that he doesn't believe god exists, because of all of the suffering in the world, but the woman tries to counter his argument by saying: "If there are dentists in the world, then why are there so many broken, infected and missing teeth?"
Dawkins wrote, jokingly: "Behold, the man who defeated biology, Joshua Feuerstein"
Many people have attacked Feuerstein's dentist video on Facebook this week. One commenter, Dylan Clayto, said: "This didn't "destroy" atheism at all. Don't get me wrong, I'm an agnostic theist and I love listening to all religious opinions with an open mind, but this video in NO way "destroyed" atheism. Sure, it makes perfect sense that God won't help those who don't seek help from him, but that doesn't prove his existence."
Another man, Hunter Hansenm said: "The difference between a god and a dentist... is that anyone can see dentists, visit dentists, become dentists, talk to dentists, and substantiate that such people as dentists even exist. You can't do any of that with "god."
"It's sad to see people engulfed in that level of stupidity," he concluded.
Others supported the video, with commenter Alifereti Drodrolagi Uluisuva simply saying: "In your face atheist".
Rayner Bettesworth, a Christian, posted: "It is interesting to see the amount of atheists always trashing a Christian post. You don't really see that Christians trash atheist posts... but I can understand that it is quite depressing to live for nothing else in this world but to just die one day. So trashing Christian pages makes them feel better about life? Shame."