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ePaper created 2018-04-10, 12:30:21 | version 1.38.0
case report | Fig. 15a Fig. 15b Fig. 15c Figs. 15a–c: Post-polymerisation occlusal grinding. Tooth set-up This appointment was focused on the evaluation of the aesthetics, phonetics, vertical dimension of occlu- sion and repeatability of centric relation. The patient ob- served and accepted the set-up with a member of his family. It was decided to create two embrasures on the anterior teeth in order to reduce incisal edge convex- ity. The posterior seal area was evaluated by probing the compression of the tissue using a ball condenser (Figs. 12a & b). Temporary complete denture construction The posterior teeth were mounted using a static laser (CANDULOR). Posterior tooth contacts were obtained according to lingualised occlusion concepts and the Ger- ber occlusal scheme (Figs. 13a & b).11 Curing and finishing the complete dentures The posterior seal area was ditched on the model us- ing the clinical information of the different levels of com- pression of the tissue. The prostheses were waxed for deposit. The polymerisation was performed using the IvoBase system (Ivoclar Vivadent), a fully automatic injec- tion system. The shrinkage of the specific PMMA resin is fully compensated for during polymerisation, thus obtain- ing the most accurate denture base adaptation (Fig. 14). After polymerisation, the prostheses were replaced into the articulator and the occlusal grinding was per- formed in order to maintain all of the occlusal con- tacts that were established before polymerisation (Figs. 15a–c). Temporary denture delivery and follow-up Upon delivery, the prostheses were placed into the oral cavity and left to adapt for 10 to 15 minutes with the pa- tient clenching two cotton rolls placed bilaterally between the arches. After that, the adaptation of the bases was checked with FIT CHECKER II. The patient was instructed to perform functional movements and to speak. The length and thickness of the borders were verified with the sili- cone-based paste and corrected when it was required. Fig. 16a Fig. 16b Fig. 17a Fig. 17b Fig. 17c Fig. 17d Figs. 16a & b: Information registration and realisation of denture copies. Figs. 17a–d: Definitive impression registration. 1 2018 29