Displacement of the full body of a dental implant into the sinus space without membrane perforation and subsequent osseointegration: a case report

• Published in: Journal of international medical research Vol. 49; no. 12; p. 3000605211060674
• Main Authors: Xia, Xun, Wei, Zhen-Yu, Wei, Hong-Wu
• Format: Journal Article
• Language: English
• Published: London, England SAGE Publications 01.12.2021; Sage Publications Ltd; SAGE Publishing
• Subjects: Case Reports; Dental Implants; Female; Humans; Maxilla - diagnostic imaging; Maxilla - surgery; Middle Aged; Osseointegration; Sinus Floor Augmentation; Sinuses; Transplants & implants; Treatment Outcome; residual bone height; implant displacement; short implant; Osteotome sinus floor elevation; piezosurgery; atrophic maxillary sinus floor
• ISSN: 0300-0605; 1473-2300
• DOI: 10.1177/03000605211060674

An increasing number of studies have investigated the use of osteotome sinus floor elevation (OSFE) with simultaneous implant placement for maxillary sinus floor residual bone height (RBH) <4 mm. Many studies have reported good clinical results, but very few have reported complications related to this procedure. Here, the case of a 50-year-old female patient with an RBH in the left upper posterior region of 1–4 mm, who underwent OSFE with simultaneous placement of three Bicon short® implants, is described. One of the implants was found to be displaced during the second-stage surgery. The displaced implant was removed using piezosurgery, OSFE with simultaneous implant placement was repeated, and the missing tooth was reconstructed 6 months later. This case suggests that OSFE with simultaneous implant placement is feasible for severely atrophic maxillary sinus floor, but carries a risk of implant displacement.