[A prefabricated, calibrated double-base procedure--KDMMS. For the simulation and 3-dimensional planning using an articulator in orthognathic surgery].

A tight cooperation between the orthodontist and oral surgeon is a key factor for success in orthognathic surgery. The quality of the final result is determined a great deal by the pre-operative model-surgery. The KDMMS is a planning tool which allows, even in the most complex cases, accurate and quick model-surgery. The two main components of the KDMMS are the double base plates and the model positioning system, which resemble a "fixation extérieure". The double base plates enable the operator to reproduce the original, pre-operative situation at all times. This allows multiple set-ups for one case, three dimensional measurement and positioning of models with occlusal control can be achieved by use of the positioning system. Especially, in complex surgery cases, the KDMMS is an effective aid in three dimensional planning of orthognathic surgery.