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International Journal of Computerized Dentistry



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Int J Comput Dent 17 (2014), No. 2     4. July 2014
Int J Comput Dent 17 (2014), No. 2  (04.07.2014)

Page 115-124, PubMed:25098159, Language: English/German

Accuracy of Chairside-milled CAD/CAM Drill Guides for Dental Implants
Ritter, Lutz / Palmer, J. / Bindl, Andreas / Irsen, Stefan / Cizek, Jirka / Karapetian, Viktor-E. / Zöller, Joachim E.
Purpose: To describe a chairside method for producing implant guides based solely on digital data and present a first assessment of in vitro accuracy on plaster models.
Material and Methods: Twenty-four implants were planned and pilot drillings were performed according to a new protocol, which is based on the registration of CBCT and CAD/CAM data. Chairside-milled one-piece drill guides were used to transfer the virtual plan into reality. Accuracy measurements were acquired.
Results: Chairside-milled drill guides were successfully fabricated and accuracy for pilot drillings was between 0.17 and 1.3 mm.
Conclusion: Within the limits of this experimental study, chairside-milled drill guides are feasible and do not require any preparation before CBCT scanning.

Keywords: accuracy, dental implantology, cone-beam computed tomography (CBCT), dental CAD/CAM, computer-aided surgery (CAS), drill template, surgical guides