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Evaluation of Three Different Validation Procedures regarding the Accuracy of Template‐Guided Implant Placement: An In Vitro Study
Author(s) -
Vasak Christoph,
Strbac Georg D.,
Huber Christian D.,
Lettner Stefan,
Gahleitner André,
Zechner Werner
Publication year - 2015
Publication title -
clinical implant dentistry and related research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.338
H-Index - 85
eISSN - 1708-8208
pISSN - 1523-0899
DOI - 10.1111/cid.12085
Subject(s) - software , implant , dicom , computer science , protocol (science) , absolute deviation , orthodontics , biomedical engineering , medicine , artificial intelligence , mathematics , surgery , statistics , pathology , programming language , alternative medicine
Purpose The study aims to evaluate the accuracy of the NobelGuide TM ( M edicim/ N obel B iocare, G öteborg, S weden) 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. Material and Methods Overall, 60 implants were placed in 10 artificial edentulous mandibles according to the NobelGuide TM protocol. For merging the pre‐ and postoperative DICOM data sets, three different fusion methods ( T riple S can T echnique, NobelGuide TM V alidation software, and AMIRA ® software [ VSG – V isualization S ciences G roup, Burlington, MA, USA ] as reference) were applied. Discrepancies between the virtual and the actual implant positions were measured. Results The mean deviations measured with AMIRA ® were 0.49 mm (implant shoulder), 0.69 mm (implant apex), and 1.98°mm (implant axis). The T riple S can T echnique as well as the NobelGuide TM V alidation software revealed similar deviations compared with the reference method. A significant correlation between angular and apical deviations was seen ( r = 0.53; p < .001). A greater implant diameter was associated with greater deviations ( p = .03). Conclusion The T riple S can T echnique as a system‐independent validation procedure as well as the NobelGuide TM V alidation software are in accordance with the AMIRA ® software. The NobelGuide TM system showed similar or less spatial and angular deviations compared with others.