Occult Peri-implant Oroantral Fistulae: Posterior Maxillary Peri-implantitis/Sinusitis of Zygomatic or Dental Implant Origin. Treatment and Prevention with Bone Morphogenetic Protein-2/Absorbable Collagen Sponge Sinus Grafting

Abstract

Ole T. Jensen, DDS, MS/Mark Adams, DDS, MS/Jared R. Cottam, DDS, MD/Jason Ringeman, DDS, MD: Sinus floor grafting with bone morphogenetic protein-2 for transsinus implant placement or as a salvage technique for sinus-involved peri-implantitis has been found to be successful. Transsinus implants for All-on-Four treatment, zygomatic implants including quad zygomatics, and infected transsinus implants underwent peri-implant grafting, which was found to seal off the sinus cavity from the oral cavity in an effort to prevent or treat sinusitis/peri-implantitis.