Is there a safe way to have an x-ray?

I desperately need to visit a dentist, I've had a back tooth break away and whats left is causing me heaps of pain and I cant eat on that side. I know it needs pulling, and possibly others around it need fillings, but to do either x-rays need to be taken to assess them.

So yah, can you have a x-ray while pregnant? Cant they put those blankets things over you ... or does that not prevent all the risks associated?

Thanks in advance