Hi all , found the forum while searching for info on a situation i have. I have been reading about some of you with roots into the sinus cavity, and that is why i am here. Today i saw a dentist for a tooth ach and it is an upper wisdom tooth that he says the roots protrude into the sinus cavity. He says it will be $275 for the extraction and $600 to repair the membrane . What is involved in this prosess ,it sounds odd to me , or should i find another dentist ? Thx! pkeen