Platelet-Rich Fibrin in Intraoral Soft Tissue Regeneration

Inclusion Criteria: * Three categories of patients will be included in this study: 1. Osteoradionecrosis (ORN) or medication related osteonecrosis of the jaw (MRONJ) patients who present to clinic with exposed bone and no clinical sign of infection. 2. Patients having an excisional biopsy in clinic performed under local anesthesia resulting in a defect that cannot be easily repaired without compromising normal anatomy or function. These situations include excisions which would result in primary closure under tension or with distorted anatomy, require a local flap, or require healing by secondary intention. 3. Patients presenting to the post-operative clinic with intraoral surgical wound dehiscence or an intraoral surgical wound healing by secondary intention. Exclusion Criteria: * Patients under 18 years of age. * Patient's unable to participate in blood draw either due to medical compromise, inability to tolerate the procedure, or inability of the physician to successfully draw the blood at the time of appointment.