Evaluation of Three Different Validation Procedures regarding the Accuracy of Template‐Guided Implant Placement: An In Vitro Study. (16th May 2013)

• Record Type: Journal Article
• Authors: Vasak, Christoph; Strbac, Georg D.; Huber, Christian D.; Lettner, Stefan; Gahleitner, André; Zechner, Werner
• Is Part Of: Clinical implant dentistry and related research. Volume 17:Number 1(2015:Feb.)
• Page Start: 142
• Page End: 149
• Publication Date: 2013-05-16
• Subjects: Dental implants -- Periodicals; Dental Implantation -- Periodicals; Dental Implants -- Periodicals; 617.693
• DOI: 10.1111/cid.12085
• Languages: English
• ISSNs: 1523-0899

Abstract

<abstract abstract-type="main"> <title>Abstract</title> <sec id="cid12085-sec-0001" sec-type="section"> <title>Purpose</title> <p>The study aims to evaluate the accuracy of the NobelGuide<sup>TM</sup> (Medicim/Nobel Biocare, Göteborg, Sweden) concept maximally reducing the influence of clinical and surgical parameters. Moreover, the study was to compare and validate two validation procedures versus a reference method.</p> </sec> <sec id="cid12085-sec-0002" sec-type="section"> <title>Material and Methods</title> <p>Overall, 60 implants were placed in 10 artificial edentulous mandibles according to the NobelGuide<sup>TM</sup> protocol. For merging the pre‐ and postoperative DICOM data sets, three different fusion methods (Triple Scan Technique, NobelGuide<sup>TM</sup> Validation software, and AMIRA® software [VSG – Visualization Sciences Group, Burlington, MA, USA] as reference) were applied. Discrepancies between the virtual and the actual implant positions were measured.</p> </sec> <sec id="cid12085-sec-0003" sec-type="section"> <title>Results</title> <p>The mean deviations measured with AMIRA® were 0.49 mm (implant shoulder), 0.69 mm (implant apex), and 1.98°mm (implant axis). The Triple Scan Technique as well as the NobelGuide<sup>TM</sup> Validation software revealed similar deviations compared with the reference method. A significant correlation between angular and apical deviations was seen (<italic>r</italic> = 0.53; <italic>p</italic> < .001). A greater implant diameter was associated with greater deviations (<italic>p</italic> = .03).</p> </sec> <sec id="cid12085-sec-0004" sec-type="section"> <title>Conclusion</title> <p>The Triple Scan Technique as a system‐independent validation procedure as well as the NobelGuide<sup>TM</sup> Validation software are in accordance with the AMIRA® software. The NobelGuide<sup>TM</sup> system showed similar or less spatial and angular deviations compared with others.</p> </sec> </abstract>