Navigated vs. conventional implant insertion for maxillary single tooth replacement

Navigated vs. conventional implant insertion for maxillary single tooth replacement
February 2005
Franz-Josef Kramer1, Carola Baethge2, Gwen Swennen1, Steffen Rosahl3
Clinical Oral Implants Research
Volume 16 Issue 1 Page 60
Blackwell Synergy
A comparative in vitro study
Abstract
Introduction: Computer-guided navigation has proven a valuable tool in several surgical disciplines. During oral implant placement, its application is intended to accomplish optimal implant localization and to reduce the risk of damage to adjacent structures. The aim of this study was to compare the precision limits of conventional vs. navigated implant insertion in practice.
Materials and methods: In cast models of the maxilla, implants were inserted to replace the left central incisor (n=40) and the right canine (n=40); each of those were inserted either conventionally (n=20) or navigated (n=20). Implant position, angulation and insertion depth were calculated from computer tomography scans of the implants that were connected to an index abutment of 40 cm length.
Results: The variations of implant positions were reduced for implants that were inserted by navigation (P<0.05). In both the axial and the transversal plane, the variations of implant angulations were reduced for implants that were inserted by a navigation protocol (P<0.05). The variations of insertion depth were less (P<0.05) when the implants were placed by navigation in comparison with conventional insertion procedures.
Conclusions: Given the experimental conditions, although they tried to mimic a clinical situation, no final conclusions can be drawn. The in vitro application of a navigation system resulted in an improved precision of insertion surgery regarding the position, angulation and depth of an implant. Clinical studies will have to prove if routine image guidance will result in superior surgical outcome.
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