Da Inglese a Italiano Medico/Sanitario Medico: Odontoiatria

Figure 4 demonstrates the sequential steps required to
translate the initial diagnostic arrangement into a
diagnostic direct mock-up over the existing preparations.
This technique is almost identical to the one defined
earlier in this article except that the fabrication of an
acrylic resin template was directly fabricated on the
prepared teeth. The teeth and the soft tissues were
insulated with petroleum jelly to prevent damage caused
by heat generated during the exothermic reaction of
acrylic resin. The silicone index (XXX) which was made on the cast (Figure 3) was filled with acrylic resin (YYY) and adapted to maxillary anterior tooth preparations with finger pressure until the material was fully polymerized (Fig. 4a). Irrigation was used to cool the acrylic resin during the exothermic stage. ** Square wax ropes ** were
adapted to the palatal aspect of the maxillary anterior
teeth to block palatal, interdental undercuts to control the
flow of unpolymerized acrylic resin (Fig. 4b). Excess
polymerized acrylic resin “flash” was removed with a blade.
Figure 4c shows intraoral anterior view of the mock-up
immediately after removal of the silicone index. A thin
layer of acrylic resin “flash” is visible on gingival tissues
and is removed with a blade (Fig. 4d).