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Computer‐aided placement of endosseous oral implants in patients after ablative tumour surgery: assessment of accuracy

2003; Wiley; Volume: 14; Issue: 3 Linguagem: Inglês

10.1034/j.1600-0501.2003.110812.x

1600-0501

Arne Wagner, Felix Wanschitz, Wolfgang Birkfellner, Konstantin Zauza, Clemens Klug, Kurt Schicho, Franz Kainberger, Christian Czerny, Helmar Bergmann, Rolf Ewers,

Facial Trauma and Fracture Management

Abstract: The objective of this study was to evaluate the feasibility and accuracy of a novel surgical computer‐aided navigation system for the placement of endosseous implants in patients after ablative tumour surgery. Pre‐operative planning was performed by developing a prosthetic concept and modifying the implant position according to surgical requirements after high‐resolution computed tomography (HRCT) scans with VISIT, a surgical planning and navigation software developed at the Vienna General Hospital. The pre‐operative plan was transferred to the patients intraoperatively using surgical navigation software and optical tracking technology. The patients were HRCT‐scanned again to compare the position of the implants with the pre‐operative plan on reformatted CT‐slices after matching of the pre‐ and post‐operative data sets using the mutual information‐technique. A total of 32 implants was evaluated. The mean deviation was 1.1 mm (range: 0–3.5 mm). The mean angular deviation of the implants was 6.4° (range: 0.4°– 17.4°, variance: 13.3°). The results demonstrate, that adequate accuracy in placing endosseous oral implants can be delivered to patients with most difficult implantologic situations.