Why did the dentist drill away my good tooth?

Question

I went for a regular dental check-up and the dentist said the previous filling in my right upper molar is becoming thinned out so he said I needed a new filling. So I agreed but when the new filling was done, it wasn't the perfect fit. So instead of drilling the filling material in the upper tooth, he drilled away my lower molar!!! It seemed fine at that time but when I got home and drank cold water, there was pain in the lower tooth (which was the good tooth he drilled away)

Now I'm afraid to go back to the dentist. Will it get better or do I need to seek treatment for the lower molar now as well? :(

Answer 1

it may slowly get better but it will likely need treatment.  Its possible that the tooth had a plunging cusp that meant that the new filling would need to be too thin also, when they are thin they are prone to breaking so instead sometimes the opposing tooth will be adjusted.  If its not adjusted through the enamel its not a big deal but if the enamel is adjusted through then it will be sensitive.  I would go back to the dentist and let him know.  Also I would switch to sensodyne toothpaste that could help also