Help need second opinion

[macthepoo]

My dentist said I need a crown, root canal, and to get my gum cut back. please advise.

 

[honestdoc]

Find another dentist. I don't think you need any of the above. You may consider a custom hard/soft night guard.

 

[MattKW]

Quite good teeth apart from severe enamel loss on your lower right molars. Usually this is due to acidic foods or drinks, e.g. soft drinks, fruit juices, sports drinks, citrus fruits. It's strange that it hasn't happened to your lower left teeth as well. Can you identify what might be causing this?

 

[honestdoc]

Quite good teeth apart from severe enamel loss on your lower right molars. Usually this is due to acidic foods or drinks, e.g. soft drinks, fruit juices, sports drinks, citrus fruits. It's strange that it hasn't happened to your lower left teeth as well. Can you identify what might be causing this?

I have similar enamel & dentinal loss on my lower left 2nd molar and not LR side. About 22 years ago, I was playing a "friendly" pick up basketball game when an aggressive middle age man elbowed me hard on my left jaw separating the disk from my condyle. Ever since my occlusion has been misaligned. My occlusal loss is due to the opposing palatal cusp wearing heavy against it. It looks very much like the images and I believe the poster may have suffered similar trauma.