I am a patient with an implant that has been installed in #14 [maxillary left first molar; 26] by a dentist/implantologist. CBCT scans clearly showed 3mm of bone height and the implant used is 4X11mm. I had been edentulous in #14 site for 3 years prior to the placement of the implant. 7mm of the implant is in my sinus, confirmed by internal ENT radiography. The dentist says there is nothing wrong with his technique and also said that you can’t tell if an implant has perforated the sinus membrane by looking at an X-ray. No bone grafting or sinus lift was performed. CBCT was done one afternoon and implant placed first thing the next morning. No mention by the dentist of any issues with bone density or height. I am having repeated sinus infections and pain. I understand that removing such an implant poses it’s own set of challenges. What should I do now? I really need you help and advice. Thank you.