Carsten Lippold1, Christian Kirschneck2, Kristina Schreiber3, Saleh Abukiress3, Amir Tahvildari3, Tatjana Moiseenko4, Gholamreza Danesh3. 1. Department of Orthodontics, University Medical Centre of Muenster, Waldeyerstraße 30, 48149 Münster, Germany. Electronic address: lippold@uni-muenster.de. 2. Department of Orthodontics, University Medical Centre of Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany. 3. Department of Orthodontics, Department of Dentistry, Faculty of Health, University Witten/Herdecke, Alfred-Herrhausen-Straße 44, 58455 Witten, Germany. 4. Department of Orthodontics, University Medical Centre of Muenster, Waldeyerstraße 30, 48149 Münster, Germany.
Abstract
INTRODUCTION: Computer-based digital orthodontic models are available for clinicians, supplemented by dedicated software for performing required diagnostic measurements. The purpose of this study was to evaluate the accuracy of measurements made on three-dimensional digital models obtained with a CBCT-scanner (DigiModel™, OrthoProof(®), Nieuwegin, The Netherlands). METHODS: 66 orthodontic dental casts of primary and early mixed dentitions were selected. Three-dimensional images were obtained on this CBCT-scanner and analyzed by means of the DigiModel™ software. Measurements were made with a digital caliper directly on the conventional casts and also digitally on the virtual models. 6 anatomic dental points were identified, and a total of 11 measurements were taken from each cast, including midline deviation, overjet, overbite and arch widths. Conformity of digital and manual measurements as well as intra-, inter- and repeated-measurement-reliability were evaluated by Lin's Concordance Correlation Coefficient, ICC and a Bland-Altman-analysis. RESULTS: The agreement and conformity of digital and manual measurements was substantial for all parameters evaluated. Intra-, inter- and repeated-measurement-reliability was excellent. CONCLUSIONS: Measurements on digital models obtained by a CBCT scan of conventional casts (DigiModel™, OrthoProof(®)) are suited for reliable diagnostic measurements, which compare well to those obtained from plaster casts, the current gold standard.
INTRODUCTION: Computer-based digital orthodontic models are available for clinicians, supplemented by dedicated software for performing required diagnostic measurements. The purpose of this study was to evaluate the accuracy of measurements made on three-dimensional digital models obtained with a CBCT-scanner (DigiModel™, OrthoProof(®), Nieuwegin, The Netherlands). METHODS: 66 orthodontic dental casts of primary and early mixed dentitions were selected. Three-dimensional images were obtained on this CBCT-scanner and analyzed by means of the DigiModel™ software. Measurements were made with a digital caliper directly on the conventional casts and also digitally on the virtual models. 6 anatomic dental points were identified, and a total of 11 measurements were taken from each cast, including midline deviation, overjet, overbite and arch widths. Conformity of digital and manual measurements as well as intra-, inter- and repeated-measurement-reliability were evaluated by Lin's Concordance Correlation Coefficient, ICC and a Bland-Altman-analysis. RESULTS: The agreement and conformity of digital and manual measurements was substantial for all parameters evaluated. Intra-, inter- and repeated-measurement-reliability was excellent. CONCLUSIONS: Measurements on digital models obtained by a CBCT scan of conventional casts (DigiModel™, OrthoProof(®)) are suited for reliable diagnostic measurements, which compare well to those obtained from plaster casts, the current gold standard.
Authors: Christoph Roser; Lutz D Hodecker; Chris Koebel; Christopher J Lux; Dorothee Ruckes; Stefan Rues; Andreas Zenthöfer Journal: Sci Rep Date: 2021-07-19 Impact factor: 4.379