My CEREC Crown Still Hurts when I Bite?

I had my CEREC partial/inlay crown done 3 months ago on lower left molar. But ever since I still can not bite since it is painful and sensitive. I went one time back for and dentist did some adjustments but it still is hurting. I am sure this is not normal. I am going back tomorrow. What should I ask dentist to do? Can he take it off and make a new one? Can this be fixed because I can not live like this.