Journal
CLINICAL ORAL INVESTIGATIONS
Volume 17, Issue 1, Pages 317-324Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s00784-012-0704-6
Keywords
Cone-beam; Navigation; Image-guided surgery; Dental implants
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Funding
- Austrian Research Promotion Agency FFG [818041B1]
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To compare the accuracy of cone-beam CT (CBCT) and multislice CT (MSCT) with regard to its use in image-guided dental implant surgery in a prospective model based study. Ten photopolymer-acrylate mandibula models, each with four precise metal reference markers, were scanned with MSCT and CBCT. The six reference distances between the markers were measured by a three-axis milling machine first. The distances were then measured by (1) navigation with the Medtronic StealthStationA (R) TREON (TM) image-guided surgery system, (2) with the Medtronic planning-tool and (3) on the PC with the MimicsA (R) software. Mean values were calculated for all three methods for CBCT and MSCT and were compared for statistical significance. Of all measurements, 83% of the arithmetic mean values were within the +/- 0.5 mm range (MSCT 88% and CBCT 78%) and 17% within the +/- 1.0 mm range (MSCT 12% and CBCT 22%). The absolute difference of the arithmetic mean values showed no statistically significant difference between MSCT and CBCT. The difference of the overall mean values to the reference was 0.43 mm for MSCT and 0.46 mm for CBCT. The data of our study prove that the application of CBCT for the indicated purpose yielded good results comparable to those of MSCT. All three measuring methods were feasible and accuracy was statistically not different between the data acquired by MSCT and CBCT within the setting of this study.
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