Dental wear estimation using a digital intra-oral optical scanner and an automated 3D computer vision method

Meireles, Agnes Batista; Vieira, Antonio Wilson; Corpas, Livia; Vandenberghe, Bart; Bastos, Flavia Souza; Lambrechts, Paul; Campos, Mario Montenegro; Las Casas, Estevam Barbosa

doi:10.1080/10255842.2015.1043627

Dental wear estimation using a digital intra-oral optical scanner and an automated 3D computer vision method

Author:

Meireles, Agnes Batista

Vieira, Antonio Wilson ; Corpas, Livia ; Vandenberghe, Bart ; Bastos, Flavia Souza ; Lambrechts, Paul ; Campos, Mario Montenegro ; Las Casas, Estevam Barbosa

Keywords:

Science & Technology, Technology, Computer Science, Interdisciplinary Applications, Engineering, Biomedical, Computer Science, Engineering, tooth wear, computer vision, dental models, imaging, intra-oral scanner, TOOTH WEAR, ACCURACY, Algorithms, Calibration, Humans, Image Processing, Computer-Assisted, Imaging, Three-Dimensional, Models, Theoretical, Reproducibility of Results, Tooth, Tooth Wear, 0903 Biomedical Engineering, 1105 Dentistry, Biomedical Engineering, 4003 Biomedical engineering, 4901 Applied mathematics

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.