title: Dental wear estimation using a digital intra-oral optical scanner and an automated 3D computer vision method.
abstract: The objective of this work was to propose an automated and direct process to grade tooth wear intra-orally. Eight extracted teeth were etched with acid for different times to produce wear and scanned with an intra-oral optical scanner. Computer vision algorithms were used for alignment and comparison among models. Wear volume was estimated and visual scoring was achieved to determine reliability. Results demonstrated that it is possible to directly detect submillimeter differences in teeth surfaces with an automated method with results similar to those obtained by direct visual inspection. The investigated method proved to be reliable for comparison of measurements over time.
authors.affiliation: a School of Engineering, Universidade Federal de Minas Gerais , Belo Horizonte , Brazil.
authors.forename: Agnes Batista
authors.initials: AB
authors.lastname: Meireles
authors.affiliation: b Department of Mathematics , Universidade Estadual de Montes Claros , Montes Claros , Brazil.
authors.forename: Antonio Wilson
authors.initials: AW
authors.lastname: Vieira
authors.affiliation: c BIOMAT, Department of Oral Health Sciences , Katholieke Universiteit Leuven , Leuven , Belgium.
authors.forename: Livia
authors.initials: L
authors.lastname: Corpas
authors.affiliation: c BIOMAT, Department of Oral Health Sciences , Katholieke Universiteit Leuven , Leuven , Belgium.
authors.forename: Bart
authors.initials: B
authors.lastname: Vandenberghe
authors.affiliation: d Department of Computational and Applied Mechanics , Universidade Federal de Juiz de Fora , Juiz de Fora , Brazil.
authors.forename: Flavia Souza
authors.initials: FS
authors.lastname: Bastos
authors.affiliation: c BIOMAT, Department of Oral Health Sciences , Katholieke Universiteit Leuven , Leuven , Belgium.
authors.forename: Paul
authors.initials: P
authors.lastname: Lambrechts
authors.affiliation: e Computer Science Department , Universidade Federal de Minas Gerais , Belo Horizonte , Brazil.
authors.forename: Mario Montenegro
authors.initials: MM
authors.lastname: Campos
authors.affiliation: f School of Engineering, Universidade Federal de Minas Gerais , Belo Horizonte , Brazil.
authors.forename: Estevam Barbosa de
authors.initials: EB
authors.lastname: Las Casas
mesh_terms: D000465:Algorithms; D002138:Calibration; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008962:Models, Theoretical; D015203:Reproducibility of Results; D014070:Tooth; D057085:Tooth Wear
keywords: computer vision; dental models; imaging; intra-oral scanner; tooth wear