My two front teeth have been hurting me these past few months. It is really sensitive to brush and touch. It hurts. Also It is sensitive to bite down into things (i.e apples) Before I have not had any problems regarding this and don't know what to do. Also don't know if this is important but I have been drinking hot water with lemon. Lemon seems to make it even more sensitive. I have stopped drinking water with lemon. Teeth does not hurt as much as before but is still sensitive.