Gross skeletal and soft-tissue malformations, topographical relations and the degree of asymmetry of severe maxillofacial deformities can be evaluated in more detail. Access to a readily available low-cost computer system for 3D-evaluation of the head will enable a larger number of clinicians to use 3D-methods in diagnosis and treatment planning. The off-line computing system permits a higher of flexibility independent of any computing centre.
During orthodontic and surgical treatment planning of severe dentofacial deformities, 3D-reconstruction imaging from axial CT-scans could previously only be handled by high-capacity computers in radiological centers. The improved performance of personal computers enables CT-scan data be transferred to a standardized MS-DOS computer. The presented software displays a 3D-reconstruction and secondary reformed vertical slices within seconds on the monitor. The symmetry of the 3D-objects can be evaluated with a freely definable grid. The distance between two different landmarks in the 3D-image can also be measured. Various tools for data manipulation permit surgical treatment simulation. The advantage of 3D-imaging with a personal computer is the user-specified orientation of the software. The off-line computing system permits a high degree of flexibility independent of any computing center.
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