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CAD/CAM‐based referencing aids to reduce preoperative radiation exposure for intraoperative navigation
Author(s) -
Zeller AlexanderNicolai,
Zimmerer Rüdiger M.,
Springhetti Sina,
Tavassol Frank,
Rahlf Björn,
Neuhaus MichaelTobias,
Gellrich NilsClaudius
Publication year - 2021
Publication title -
the international journal of medical robotics and computer assisted surgery
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.556
H-Index - 53
eISSN - 1478-596X
pISSN - 1478-5951
DOI - 10.1002/rcs.2241
Subject(s) - cad , splints , computer science , cone beam computed tomography , splint (medicine) , medicine , tomography , computer vision , computed tomography , artificial intelligence , medical physics , engineering drawing , radiology , orthodontics , engineering
Background All intraoperative navigation systems need a referencing procedure prior to utilization, usually requiring an additional computed tomography (CT) or cone beam computed tomograph (CBCT) scan. As new techniques in the field of Computer‐aided design / Computer‐aided manufacturing (CAD/CAM) have evolved, it seemed favourable to develop a new referencing method not relying on additional CT or CBCT scans. Methods A digital maxillary dental scan was used to create a referencing splint by CAD/CAM containing four reference points. By matching scanned dental model and initial trauma‐CT, the splints position and thus the reference points were digitally simulated. These splints data were imported into the navigation system in Standard Tessellation Language (STL) format. These data were also 3D printed and the resulting piece was placed on the anatomical models' teeth. The methods accuracy was then assessed in vitro. Conclusion Our method for referencing of intraoperative navigation can be feasible to avoid an additional CT or CBCT prior to navigation.