A 4 mm-Long Implant Rehabilitation in the Posterior Maxilla with Dynamic Navigation Technology: A Case Report after a Three-Years Post-Loading Follow-Up

Gerardo Pellegrino, Giuseppe Lizio, Fabio Rossi, Lorenzo Tuci, Lorenzo Ferraioli, Luigi Vito Stefanelli, Stefano Di Carlo and Francesca De Angelis
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Gerardo Pellegrino: Oral Surgery Unit, Department of Biomedical and Neuromotor Sciences, University of Bologna, Via San Vitale 59, 40125 Bologna, Italy
Giuseppe Lizio: Oral Surgery Unit, Department of Biomedical and Neuromotor Sciences, University of Bologna, Via San Vitale 59, 40125 Bologna, Italy
Fabio Rossi: Oral Surgery Unit, Department of Biomedical and Neuromotor Sciences, University of Bologna, Via San Vitale 59, 40125 Bologna, Italy
Lorenzo Tuci: Oral Surgery Unit, Department of Biomedical and Neuromotor Sciences, University of Bologna, Via San Vitale 59, 40125 Bologna, Italy
Lorenzo Ferraioli: Oral Surgery Unit, Department of Biomedical and Neuromotor Sciences, University of Bologna, Via San Vitale 59, 40125 Bologna, Italy
Luigi Vito Stefanelli: Department of Oral and Maxillo-Facial Sciences, Sapienza University of Rome, 00185 Rome, Italy
Stefano Di Carlo: Department of Oral and Maxillo-Facial Sciences, Sapienza University of Rome, 00185 Rome, Italy
Francesca De Angelis: Department of Oral and Maxillo-Facial Sciences, Sapienza University of Rome, 00185 Rome, Italy

IJERPH, 2021, vol. 18, issue 18, 1-11

Abstract: The use of short (<8 mm long) and ultra-short (<6 mm long) implants allows the prosthetic rehabilitation of the posterior ridges of the jaws avoiding reconstructive procedures. Nevertheless, this approach requires vast experience to ensure the primary stability of the fixture in a correct position. Computer-aided implantology (CAI) achieves better results than the free-hand one in terms of placement accuracy, reducing the surgical risks and the operative timings. Dynamic navigation (DN) allows the surgeon to track the position and movements of the drill in real-time on the CT imaging data set. It is more versatile than the computed static system, enabling the operator to change the guidance coordinates according to the intra-operative feedbacks. A mono-edentulous upper right first molar site was rehabilitated with a four mm-long implant to avoid reconstructive techniques, drastically rejected by the patients. The case was managed within a DN protocol considering the minimal available bone and the prosthetic demands. The phases of this procedure were strictly documented up to a 3-year follow-up. No intra-operative problems occurred, and adequate primary stability of the implant was obtained. The prosthetic loading was carried out within only six weeks without any complications. No variation of the baseline clinical scenario as evidenced clinically and radiographically at the end of follow-up. No similar cases are reported in the literature.

Keywords: ultra-short implants; computer-aided implantology; dynamic navigation (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
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