[Functional analysis and reproducible technic for the radiography of the temporomandibular joint].

An improved x-ray machine is presented with which it is possible, for the first time, to take and exactly reproduce roentgenograms of the temporo-mandibular joint focussed bilaterally on to the transverse hinge-axis. This technique permits the accurate radiological comparisons required for diagnosis and therapy, in the asymmetric skull.