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Issue: 01/2013 - F. Petschelt - M. Millian - T. Kraußeneck
Analysis of the precision of implant templates

Aim: The aim of this study was to evaluate the precision of holes drilled in implant templates, which were analyzed with cone beam computed tomography (CBCT) using suitable planning software.

Material and methods: 40 templates that had been used clinically to enable successful treatment were studied. 17 of the analyzed templates were fabricated with the Med3D program (C. Hafner GmbH, Pforzheim) and 23 templates were made with the ExpertEase software of Dentsply Friadent GmbH. The Scanora Soredex was used for CBCT. Comparative measurements were made on a plaster model with silicone key using an individually fabricated appliance. 3 holes were drilled in each template by 3 different persons. The resulting data were compared to within less than a millimeter.

Results: Maximum deviations of 2.0mm in the horizontal dimension and 1.0 mm in the vertical dimension were found. Much smaller deviations with more precise positions were found with the ExpertEase version compared with the Med3D-assisted procedure.

There were no significant differences in drilling precision between an experienced implantologist and a dental nurse without any practical experience on patients.

Conclusion: With observation of the basic principles of implantology and use of planning software for template-guided surgery, exact implant placement to within less than a millimeter is possible, even in the most demanding situations.


Petschelt F, Millian M. Kraußeneck: Analysis of the Precision of Implant Templates. Z Zahnärztl Implantol 2013;29:58?69. DOI 10.3238/ZZI.2013.0058?0069

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