Work

Superposition tridimensionnelle (3-D) sur la base du crâne pour l'évaluation longitudinale des effets de la croissance et du traitement

Year: 2009

Type: article

Abstract: To evaluate growth or treatment change, superimposition of serial radiographs on a stable reference structure is necessary. In 2-D cephalometrics, the cranial base is often used for this purpose because it shows minimal changes after neural growth is completed, but the cranial base landmarks in lateral or P-A cephalograms are unreliable when other orientations are evaluated. In this paper we present a novel method for 3-D superimposition based on fully-automated voxel-wise registration of the surface cranial base. The software packages allow quantitative assessment of changes between two time points via calculation of the Euclidean distances between the surfaces of the 3-D models, and visual assessment of the location and magnitude of changes in the jaws over time via graphical overlays in which changes are shown in color maps. This enables a detailed examination of the adaptation patterns for patients who experience clinically significant skeletal changes with growth and/or treatment.

Source: L Orthodontie Française

DOI: 10.1051/orthodfr/2009021

Authors: Lucia H.S. Cevidanes, Martin Styner, William R. Proffit

Institution: University of North Carolina at Chapel Hill

Language: French

Topic: Orthodontics and Dentofacial Orthopedics

Subfield: Orthodontics

Field: Dentistry

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: green

Funder: National Institute of Dental and Craniofacial Research