Fig. 5 The mandibular restoration was pressed in dentin only …
Fig. 6 … and then ground to the dentin core (cut back) and …
Fig. 7 … complemented with appropriate incisal material using a flask technique.
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Figs 8a to d The gingival parts were manually built up in layers using the comprehensive SR Nexco shade range.
characterized by material and processing features specifically geared to the needs of the lab technician. It offers a beautiful optical appearance and good clinical behaviour. Given its physical and optical properties, SR Nexco is ideally suited for this type of work. Compared with ceramic materials, the composite is capable of absorbing forces and is therefore especially suited for veneering applications in implant restorations. At this stage, we were able to ripe the benefits of our meticulous approach to planning and of our transparent flask method. SR Nexco dentin material of the appropriate shade was pressed onto the conditioned framework and polymerized in a curing device (Fig. 5). With this method, the prosthesis was homogeneously reproduced in dentin in a relatively short time. The reconstruction was removed from the flask and reduced to the dentin core using the silicone key as a guide, similar to the cut-back technique (Fig. 6).
Lifelike fluorescent and opalescent effects are paramount to ensure a harmonious integration of the tooth shade under varying light conditions.
Customized layering is essential to achieve a true-to-nature effect, not unlike ceramic restorations. To complement the incisal area, the corresponding incisal material was applied into the flask and pressed onto the “dentin core” using heat and then polymerized. In a few stages, we transferred the planned restoration to the final reconstruction using an esthetic dentin and incisal build-up (Fig. 7).
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Figs 9a to c Completed restorations on the model