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Thin-plate spline (TPS) graphical analysis of the mandible on cephalometric radiographs
H P Chang1, P H Liu, H F Chang
1Department of Orthodontics, School of Dentistry and Graduate Institute of Dental Sciences, Kaohsiung Medical University, Taiwan. hopoch@cc.kmu.edu.tw
Abstract:
We describe two cases of Class III malocclusion with and without orthodontic treatment. A thin-plate spline (TPS) analysis of lateral cephalometric radiographs was used to visualize transformations of the mandible. The actual sites of mandibular skeletal change are not detectable with conventional cephalometric analysis. These case analyses indicate that specific patterns of mandibular transformation are associated with Class III malocclusion with or without orthopaedic therapy, and visualization of these deformations is feasible using TPS graphical analysis.