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Accuracy of computer-assisted implant placement with insertion templates
Eleni Naziri1, Alexander Schramm2, Frank Wilde1
1Department of Oral and Plastic Maxillofacial Surgery, Military Hospital Ulm, Germany.
Summary
Computer-assisted implant surgery using computed tomography and template-guided placement is accurate and predictable. This study found minimal deviations between planned and actual implant positions, demonstrating its clinical reliability for dental restorations.
Area of Science:
- Dental Implantology
- Computer-Assisted Surgery
- Medical Imaging
Background:
- Template-guided implant placement offers potential for improved accuracy.
- Computed tomography (CT) provides detailed anatomical data for virtual planning.
Purpose of the Study:
- To evaluate the accuracy of computer-assisted implant insertion using CT and template-guided techniques.
- To assess deviations between planned and actual implant positions.
Main Methods:
- 246 implants placed in 181 patients using 3D-based transfer templates.
- Virtual planning with CoDiagnostiX software; laboratory fabrication of surgical guides.
- Intraoperative registration of actual implant position and CT analysis for deviation measurement.
Main Results:
- Median deviations: 1.0 mm at the shoulder, 1.4 mm at the apex; median angular deviation: 3.6º.
- Smaller deviations for single-tooth restorations compared to free-end arch placements.
- Implant length significantly influenced deviations; jaw location did not.
Conclusions:
- Laboratory-fabricated surgical guides based on CT enable accurate and predictable dental implant placement.
- Computer-assisted implant surgery demonstrates clinical reliability.
