Camila Massaro1,2, Carolina Losada3, Lucia Cevidanes1, Marilia Yatabe1, Daniela Garib4, José Roberto Pereira Lauris5, Marcos Ioshida6, Diego Rey7, Maria Antonia Alvarez7, Erika Benavides8, Hector Rios8, Juan Fernando Aristizabal3, Antonio Carlos Ruellas1,9. 1. Department of Orthodontics and Pediatric Dentistry, School of Dentistry, University of Michigan, Ann Arbor, MI, USA. 2. Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, Brazil. 3. Department of Orthodontics, University of Valle, Cali, Colombia. 4. Department of Orthodontics, Bauru Dental School and Hospital for Rehabilitation of Craniofacial Anomalies, University of São Paulo, Bauru, Brazil. 5. Department of Community Health, Bauru Dental School, University of São Paulo, Bauru, Brazil. 6. Department of Cariology, Restorative Sciences and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, MI, USA. 7. Department of Orthodontics, CES University, Medellin, Colombia. 8. Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, MI, USA. 9. Department of Orthodontics, School of Dentistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
Abstract
OBJECTIVE: To compare the three-dimensional (3D) linear displacements and the mesiodistal and buccolingual angulation changes after orthodontic treatment in digital dental models (DDMs) and 3D models derived from cone-beam computed tomography (CBCT). SETTINGS AND SAMPLE POPULATION: Digital dental model and CBCT scans were selected from 24 adults who had undergone orthodontic treatment for mandibular anterior crowding. MATERIAL AND METHODS: 3D linear displacements and changes in angular measurements (mesiodistal and buccolingual angulation) were assessed in pre- and post-treatment DDM and CBCT images using the software ITK-snap and 3D SlicerCMF. Intra- and inter-rater agreement of measurements in DDM and CBCT were tested using the intraclass correlation coefficient (ICC). DDM and CBCT measurements were compared using the Wilcoxon test (P < .05), ICC and Bland-Altman plots. RESULTS: Intra- and inter-rater agreement varied from good (ICC > 0.75) to excellent (ICC > 0.90) for both DDM and CBCT measurements. Although no significant difference between DDM and CBCT methods was observed for linear measurements of tooth movement, the angular assessments were different for most measurements. The agreement between measurements from both assessments varied from poor to excellent. CONCLUSIONS: Longitudinal assessments of tooth movements including 3D linear displacements and mesiodistal and buccolingual angulation are reproducible when using both DDM and CBCT. Changes in angular measurements due to orthodontic treatment are discordant when measured in the digital models (clinical crown) and in the CBCT images (whole tooth).
OBJECTIVE: To compare the three-dimensional (3D) linear displacements and the mesiodistal and buccolingual angulation changes after orthodontic treatment in digital dental models (DDMs) and 3D models derived from cone-beam computed tomography (CBCT). SETTINGS AND SAMPLE POPULATION: Digital dental model and CBCT scans were selected from 24 adults who had undergone orthodontic treatment for mandibular anterior crowding. MATERIAL AND METHODS: 3D linear displacements and changes in angular measurements (mesiodistal and buccolingual angulation) were assessed in pre- and post-treatment DDM and CBCT images using the software ITK-snap and 3D SlicerCMF. Intra- and inter-rater agreement of measurements in DDM and CBCT were tested using the intraclass correlation coefficient (ICC). DDM and CBCT measurements were compared using the Wilcoxon test (P < .05), ICC and Bland-Altman plots. RESULTS: Intra- and inter-rater agreement varied from good (ICC > 0.75) to excellent (ICC > 0.90) for both DDM and CBCT measurements. Although no significant difference between DDM and CBCT methods was observed for linear measurements of tooth movement, the angular assessments were different for most measurements. The agreement between measurements from both assessments varied from poor to excellent. CONCLUSIONS: Longitudinal assessments of tooth movements including 3D linear displacements and mesiodistal and buccolingual angulation are reproducible when using both DDM and CBCT. Changes in angular measurements due to orthodontic treatment are discordant when measured in the digital models (clinical crown) and in the CBCT images (whole tooth).
Authors: Marcos Ioshida; Brian Andres Muñoz; Hector Rios; Lucia Cevidanes; Juan Fernando Aristizabal; Diego Rey; Hera Kim-Berman; Marilia Yatabe; Erika Benavides; Maria Antonia Alvarez; Sarah Volk; Antonio C Ruellas Journal: Oral Surg Oral Med Oral Pathol Oral Radiol Date: 2018-10-16
Authors: Iury Oliveira Castro; Bruno Frazão Gribel; Ana Helena Gonçalves de Alencar; José Valladares-Neto; Carlos Estrela Journal: J Orofac Orthop Date: 2018-07 Impact factor: 1.938
Authors: Antonio Carlos de Oliveira Ruellas; Luis T Huanca Ghislanzoni; Marcelo Regis Gomes; Carlotta Danesi; Roberta Lione; Tung Nguyen; James A McNamara; Paola Cozza; Lorenzo Franchi; Lucia Helena Soares Cevidanes Journal: Am J Orthod Dentofacial Orthop Date: 2016-04 Impact factor: 2.650