A brilliant new smile with KATANA Zirconia YML

Preliminary state of affairs

The target was once to create a brand new white and natural-looking smile, according to the preliminary medical state of affairs (Fig. 1). It was once determined to interchange the present crowns within the maxilla and to reach a much wider and brighter smile via including laminate veneers in each the maxilla and mandible.

Virtual smile design and diagnostic wax-up

Virtual smile design and a diagnostic wax-up are efficient equipment for analysing and making plans a brand new smile. Intra-oral scans and portrait images of the affected person served as the root for growing best enamel proportions and shapes. As soon as the design of the brand new restorations were finished in DentalCAD (exocad; Figs. 2–4), the wax-up fashions had been published and due to this fact used to manufacture a matrix for switch of the design to the affected person’s mouth for intra-oral analysis (Fig. 5). This try-in additionally allowed the deliberate aesthetic end result to be evaluated extra-orally (Fig. 6). At this degree, aesthetic and practical research are of number one significance.

Alveolar published fashions

Exact and practical fashions are crucial for the fabrication of correct and aesthetic restorations within the laboratory. Style builder device (SHERAeasy-model, SHERA Werkstoff-Technologie) and a 3-D printer (MAX UV, Asiga) had been used to supply grasp and alveolar fashions with complete gingival knowledge and detachable dies (Figs. 7 & 8).

Refractory die duplication and articulation

The refractory die method allows the fabrication of extraordinarily thin-walled restorations and due to this fact helps minimum enamel construction elimination. This means is especially appropriate for up to now untreated enamel with out main defects. The broadcast dies had been duplicated the usage of a refractory die subject matter earlier than the fashions had been fixed within the articulator to switch the maxillomandibular dating (Figs. 9 & 10).

Manufacturing of the restorations

To reach optimum effects, cautious number of fabrics is very important for every medical state of affairs. For the crown frameworks of the six maxillary anterior restorations, KATANA Zirconia YML in Color NW was once decided on as the most suitable choice (Figs. 11–13).

The intaglio surfaces of the frameworks had been handled with Esthetic Colorant (Kuraray Noritake Dental) in Color Opaque to stop discoloration appearing via from one of the vital ready enamel. After sintering of the frameworks in a high-temperature furnace (Nabertherm) at 1,550 °C, CERABIEN ZR porcelains had been implemented. To create pure inner results between the porcelain layers, inner staining with CERABIEN ZR inner stains was once used. This means is each predictable and environment friendly. Each and every degree of porcelain build-up and marking was once documented photographically to observe the method and file all related protocol steps (Figs. 14–24). The veneers had been manufactured from Noritake Tremendous Porcelain EX-3 at the refractory dies to revive the premolars within the maxilla and the central incisors via to the second one premolars within the mandible.

Definitive placement and ultimate end result

The veneers had been cemented the usage of an adhesive protocol with a resin composite, and the crowns had been cemented the usage of an opaque glass ionomer cement (Figs. 29 & 30). On the recall appointment roughly one month after placement, very good gingival stipulations had been noticed, along side a harmonious, wholesome and aesthetically pleasant smile (Figs. 31–33).

Definitive placement and ultimate end result

The veneers had been cemented the usage of an adhesive protocol with a resin composite, and the crowns had been cemented the usage of an opaque glass ionomer cement (Figs. 29 & 30). On the recall appointment roughly one month after placement, very good gingival stipulations had been noticed, along side a harmonious, wholesome and aesthetically pleasant smile (Figs. 31–33).