I went to a new dentist for a routine cleaning/xrays. I've had NO dental pain or problems recently, but....

they took xrays, and by looking at them he told me I need a root c on # 4 and possible on # 14 (both those teeth are on top and near the back I think) Considering I have no pain and have never been to this Dentist before, I can't help being a little weary. The one "symptom" I might have had is that I've had really strange sensations in my left ear for quite some time now, on a daily basis, the hygentist seemed to think that could be connected to my need for RCT. He did show me the xrays and I saw the shadowy spots he says indicate need for Root C. But, is this really enough to go on to make such a diagnosis? Should I try to get a second opinion from and Endodontist? Not that I would even know how to go about doing that without spending a bunch of money....ARGH! I guess I am just looking for general advice. Thanks to anyone who can try and guide me:)