Re: 2 Worn Teeth (cant hardly eat)
If the pain is due to exposed dentin (i. e. the outer enamel layer is gone), try rubbing in sensodyne gel for a couple of weeks (don't rinse off). It only works as long as you're using it, so keep using if this helps with the problem.
Your dentist may also be able to offer in-office desensitizing treatments, but it sounds as if he's not being very helpful. I can't really understand why he can't apply some bonding over the affected area?