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[Three-dimensional x-ray computed tomographic imaging of the dentition after bone subtraction].

Owing to computer programs, computed tomography allows obtaining sections of the facial structures in all spatial planes and to "pile up" all sections to reconstruct the structural unit studied. In addition, these images can be reconstructed by selecting a density threshold, for example that of dentin or of enamel, isolating those from their bony environment, and thus the patient's dental arch can be visualized as if one was manipulating a pair of dental models. The first results obtained with this technique are presented, and they seem to be highly promising.