Obtaining the individualized characteristics constraint set

Scanning is used to obtain the edentulous maxillary and mandibular model and the three- dimensional digital model of the wax occlusal rim, as shown in Fig 2(A) and 2(B). The patient’s edentulous maxilla and mandible and the premade wax occlusal rim include the patient’s individualized anatomical features; these are obtained one by one by defining the curves and surfaces and are stored structurally using XML files, as shown in Fig 2(C). The defined individualized characteristics constitute the constraint information set {C_i}, as shown in Table 1.

(a) Edentulous digital model; (b) premade occlusal rim digital model; (c) extracted individualized characteristics constraint set.