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Related Experiment Video

Updated: Dec 18, 2025

Real-Time Dynamic Navigation System for the Precise Quad-Zygomatic Implant Placement in a Patient with a Severely Atrophic Maxilla
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Precision of 30 guided implants in complex tumour situations.

C Rostetter1, J Abazi2, T Gander2

  • 1Private Practice for Maxillofacial Surgery, Kasernenstrasse 1, 9100 Herisau, Switzerland.

The British Journal of Oral & Maxillofacial Surgery
|June 20, 2020
PubMed
Summary

Dental implant rehabilitation for tumor patients is challenging but feasible. Guided implant surgery, using virtual planning and Cone Beam Computed Tomography (CBCT), optimizes placement precision for improved patient outcomes.

Keywords:
Dental implantfree-flap reconstructionprecision of implant placementprecision of reconstructionprosthodontic reconstructiontumour surgery

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Area of Science:

  • Oral and Maxillofacial Surgery
  • Reconstructive Dentistry
  • Oncology Rehabilitation

Background:

  • Implant-supported prosthetic rehabilitation in tumor patients presents significant challenges.
  • Factors include disrupted anatomy, limited mouth opening, and effects of adjuvant therapies like radiotherapy.

Purpose of the Study:

  • To evaluate the precision of pre-planned guided implant placement in tumor patients with complex clinical situations.
  • To assess the feasibility of optimizing implant positioning for enhanced prosthetic rehabilitation and patient quality of life.

Main Methods:

  • Retrospective analysis of eight patients (30 implants) who underwent guided implant reconstruction between 2015-2018.
  • Comparison of planned vs. actual implant positions using Cone Beam Computed Tomography (CBCT) data fusion.
  • Quantification of deviations in entry-point, apex position, angular deviation, and depth error.

Main Results:

  • Mean entry-point discrepancy was 2.28 mm and apex discrepancy was 2.89 mm.
  • Mean angular deviation was 9.5 degrees, with a mean depth deviation of 1.52 mm.
  • Demonstrated high precision in implant placement despite challenging patient conditions.

Conclusions:

  • Pre-planned guided implant surgery is a feasible and precise method for rehabilitating tumor patients.
  • This technique allows for optimized implant survival and prosthetic restoration in complex cases.
  • Early prosthetic rehabilitation is recommended to positively impact patient quality of life and general health.