Q: My dentist tells me that I have to get a sinus graft done to have an implant in my upper back teeth area.  What is a sinus graft? Do I really need one? A: In the posterior areas (back teeth area) of the upper jaws are maxillary sinuses.  Maxillary sinuses are air filled space within the bone.  The size of the maxillary sinus varies greatly … [Read more...]