I'm not sure about the blocked ear, but all sorts of things can happen after any dental work really. For me, I just had a ton of dental work done. 3 roots canals and fillings. It was done over the span of about 3 months. I kid you not, everytime I had work done, the next day the side that I had work done on my throat would be really sore. Lasts a couple days for me.
The ear thing is probably normal. Consider the trauma that your mouth and nerves had gone through and how it's all connected. Give it a couple days and I bet you will feel better
If not, no harm in calling the dentist. It's very likely nothing serious.
Hang in there!