Andreasi Bassi, M., C. Andrisani, S. Lico, Z. Ormanier, and C. Arcuri. 2016. “Endoscopic Retrieval of a Dental Implant into the Maxillary Sinus: A Case Report”. Oral & Implantology 9 (2):69-75. https://www.oimplantology.org/oimp/article/view/147.