High precision anatomical facsimile models of the patients' skulls, individ
ually produced by colour stereolithography, were used in the preoperative p
lanning for seven patients with complex maxillofacial tumours, Selectively
coloured models facilitated the management of ablative surgery and reconstr
uctive procedures as well. The indicators for preoperative colour stereolit
hographic model planning concerning maxillofacial tumour surgery are discus
sed.