R_Bibb_Medical_Modelling_The_Application_of_Adv.pdf

200 Medical modelling
6.65 Checking the pattern fi t.
6.66 Final impression taking.
excellent, but it was decided that the patient’s natural eyebrows should be
visible, so the wax was reduced in that area.
Wax between the eyelids was removed to accommodate the acrylic eye
unit and then the fi tting surface was smoothed before being coated with a
thin layer of impression material. The pattern was then re-located in the
orbit to obtain the fi nal fi tting surface impression (Fig. 6.66). Finally, the
edges were contoured into the surrounding tissue using pink dental wax. A
fl ask-less, two-part plaster mould was created around the wax pattern (Fig.
6.67). The wax pattern was then boiled out.