I got a root canal about a month ago. Before I had my root canal my tooth was sensitive to cold and hot, it was painful to chew with. The dentist used a temporary filling. It has been bothering me ever since...is this normal? My dentist has been using laser treatment on my tooth which has made it a great deal better but it still feels uncomfortable when I chew on it. I still have my temporary filling in and my next visit to my dentist he want to put the permanent filling in...Is it normal for me to still be experiencing uncomfort?