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Try-in and cementation
In the second clinical phase, the veneers were tried-in and cemented in place. Firstly, the temporary restorations were removed and the prepared teeth were cleaned. Each veneer was tried-in individually to ensure correct fit. Next, the proximal fit was checked by positioning one veneer correctly and then placing the adjacent veneer. The position of the fi rst veneer was examined very closely after the adjacent veneer had been placed in order to establish any changes.
Any small additional adjustments to the veneers can be made with suitable ceramic polishers.
The veneers were placed with Variolink fi Veneer. In the fi rst step, the shade of the adhesive was selected. Variolink Try-In pastes were used for this purpose, since they help simulate the final shade of the restoration (Fig. 12). The adhesive cementation procedure was divided into three stages: pretreatment of the veneers, conditioning of the prepared teeth and placement and fi nishing of the veneers. A rubber dam was placed with a retentive clasp for each individual preparation. The veneers were tried-in with the Variolink Try-In pastes. Subsequently, they were rinsed with a water jet and dried with oil-free air. For optimal cleaning results, Ivoclean was applied for 20 seconds and then removed with a water jet.
The ceramic surface, which had to be kept free from contamination from now [...]
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