Can an abscessed tooth cause an ear ache?

Yes: Dental pain, especially in the back teeth, very commonly radiates to other areas. It is not uncommon of hear of ear aches. It is also possible that other sources of pain (i.e. The jaw joint or chewing muscles) can refer pain to both teeth and/or the ears. A problem-focused exam should be sought to determine what your situation is.

Yes: That is a common symptom.