A novel method to integrate intra-oral scan models with 3D facial images
department or school: Dentistry, Faculty of
data provider: DSpace
degree campus: UBCV
creator: Sigouin, Amanda Justine
issued: 2023-03-08T23:02:45Z
issued: 2023
related degree: Master of Science - MSc
degree grantor: University of British Columbia
description: Objectives: Three-dimensional (3D) imaging is becoming more mainstream with advances in digital technology and reduction in cost. Two-dimensional (2D) imaging has been the standard in orthodontics but it would be beneficial to examine virtual 3D patients for diagnosis, treatment planning, and assessment of growth and treatment outcomes with no use of ionizing radiation. This study aimed to validate the Bellus Arc7 3D facial scanner and test a novel method for integrating intraoral scans with 3D facial images to create a virtual patient. Methods: Part I entailed validation of Bellus Arc7 using the conventional reference standard, the 3dMDface system. Three subjects were selected, and for each 4 images were taken on two occasions one week apart. Images were uploaded, superimposed, and a 3D heat map was generated for comparison using Geomagic Control X processing software. Part II compared a novel merging technique from 14 participants recruited from UBC Graduate Orthodontic Program. For each subject, 5 images were captured (two images using Trios intraoral scanner, one facial scan with Bellus Arc7, and two with Artec Space Spider). The intra-oral scan of the upper dentition and the Arc7 3D facial scans were merged via the transferring of the perioral scan to develop a virtual patient. The reference 3D virtual image from the alignment of the dental scan and Artec Space Spider facial scans was used for comparison. The surface-to-surface root mean square and point-to-point deviation values between the two meshes were analysed. Results: Part I showed the root mean square for Bellus Arc7 as compared to the reference 3dMD to be 1.16 ± 0.41 mm for all three subjects, which is clinically acceptable for soft tissue measurements. Part II showed that relative to the merged Artec Space Spider scans, the root mean square difference of the merged Arc7 scans was 1.52 ± 0.54 mm. For the point-to-point deviations in the dentition there was a relatively wide range of mean differences. …
aggregated CHO: https://circle.library.ubc.ca/rest/handle/2429/83899
note: A NOVEL METHOD TO INTEGRATE INTRA-ORAL SCAN MODELS WITH 3D FACIAL IMAGES by Amanda Justine Sigouin BSc., Simon Fraser University, 2013 DMD, The University of British Columbia, 2017 A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE in THE FACULTY OF GRADUATE AND POSTDOCTORAL STUDIES (Craniofacial Science) THE UNIVERSITY OF BRITISH COLUMBIA (Vancouver) March 2023 © Amanda Justine Sigouin, 2023 ii The following individuals certify that they have read, and recommend to the Faculty of Graduate and Postdoctoral Studies for acceptance, the thesis entitled: A Novel Method for Integrating Intra-Oral Scan Models with 3D Facial Images submitted by Amanda Justine Sigouin in partial fulfillment of the requirements for the degree of Master of Science in Craniofacial Science Examining Committee: Dr. Bingshuang Zou, Associate Professor, Division of Orthodontics, UBC Supervisor Dr. Jolanta Aleksejuniene, Associate Professor, Director of Graduate Studies, UBC Supervisory Committee Member Dr. Vincent Lee, Assistant Professor of Teaching, Division of Prosthodontics, UBC Supervisory Committee Member Dr. David MacDonald, Professor, Chair, Oral & Maxillofacial Radiology, UBC Additional Examiner iii Abstract Objectives: Three-dimensional (3D) imaging is becoming more mainstream with advances in digital technology and reduction in cost. Two-dimensional (2D) imaging has been the standard in orthodontics but it would be beneficial to examine virtual 3D patients for diagnosis, treatment planning, and assessment of growth and treatment outcomes with no use of ionizing radiation. This study aimed to validate the Bellus Arc7 3D facial scanner and test a novel method for integrating intraoral scans with 3D facial images to create a virtual patient. Methods: Part I entailed validation of Bellus Arc7 using the conventional reference standard, the 3dMDface system. Three subjects were selected, and for each 4 images were taken on two occasions one week a…
has type: Thesis/Dissertation
date issued: 2023-05
is shown at: 10.14288/1.0427398
language: eng
degree discipline: Craniofacial Science
provider: Vancouver : University of British Columbia Library
publisher: University of British Columbia
rights: Attribution-NonCommercial-NoDerivatives 4.0 International
rights URI: http://creativecommons.org/licenses/by-nc-nd/4.0/
scholar level: Graduate
contributor: Zou, Bingshuang
type: Text
identifier URI: http://hdl.handle.net/2429/83899