title: 3D reconstruction of dental specimens from 2D histological images and microCT-scans.
abstract: Direct comparison of experimental and theoretical results in biomechanical studies requires a careful reconstruction of specimen surfaces to achieve a satisfactory congruence for validation. In this paper a semi-automatic approach is described to reconstruct triangular boundary representations from images originating from, either histological sections or microCT-, CT- or MRI-data, respectively. In a user-guided first step, planar 2D contours were extracted for every material of interest, using image segmentation techniques. In a second step, standard 2D triangulation algorithms were used to derive high quality mesh representations of the underlying surfaces. This was accomplished by converting the 2D meshes into 3D meshes by a novel lifting procedure. The meshes can be imported as is into finite element programme packages such as Marc/Mentat or COSMOS/M. Accuracy and feasibility of the algorithm is demonstrated by reconstructing several specimens as examples and comparing simulated results with available measurements performed on the original objects.
authors.affiliation: University of Bonn, Department of Orthodontics, Welschnonnenstr.17, 53111, Bonn, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Rahimi
authors.forename: L
authors.initials: L
authors.lastname: Keilig
authors.forename: G
authors.initials: G
authors.lastname: Bendels
authors.forename: R
authors.initials: R
authors.lastname: Klein
authors.forename: T M
authors.initials: TM
authors.lastname: Buzug
authors.forename: I
authors.initials: I
authors.lastname: Abdelgader
authors.forename: M
authors.initials: M
authors.lastname: Abboud
authors.forename: C
authors.initials: C
authors.lastname: Bourauel
mesh_terms: D000465:Algorithms; D000818:Animals; D001696:Biomechanical Phenomena; D015921:Dental Implants; D020342:Finite Element Analysis; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods* / Q000706:statistics & numerical data; D008334:Mandible / Q000033:anatomy & histology / Q000000981:diagnostic imaging / Q000502:physiology; D008437:Maxilla / Q000033:anatomy & histology / Q000000981:diagnostic imaging / Q000502:physiology; D003765:Models, Dental; D008963:Molar / Q000033:anatomy & histology / Q000000981:diagnostic imaging / Q000502:physiology; D051381:Rats; D013552:Swine; D014057:Tomography, X-Ray Computed
chemical_list: D015921:Dental Implants