Digital vs. analogue workflow on ten ceramic veneers in the maxilla

Fig. 1: Initial photograph of the anterior teeth prior to orthodontic treatment.

Fig. 2a: Anterior teeth after orthodontic treatment.

Fig. 2b: Extraoral photographs after orthodontic treatment.

Fig. 3: Digital smile design indicating crown lengthening of teeth #13, 12, 11 and 21 and restorative treatment of the ten anterior teeth

Fig. 4: Wax-up on the stone model concerning the restorative treatment of the ten anterior teeth.

Fig. 5: Three-dimensionally printed model of the digital smile design planning, bearing a mock-up shell. A cervical opening was introduced for surgical access and guidance for crown lengthening.

Figs. 6a: Intraoral fi t of the surgical guide for crown lengthening.

Figs. 6b: Intraoral fi t of the surgical guide for crown lengthening.

Fig. 7: Periodontal tissue of the anterior teeth six months after crown lengthening.

Fig. 8a: Mock-up silicone index.

Fig. 8b: Intraoral photograph of the mock-up.

Fig. 9a: Preparation through the mock-up.

Fig. 9b: Check of the preparation depth, with the use of the silicone guide, palatal aspect.

Fig. 9c: Final preparation of the teeth.

Fig. 10: Analogue impression with polyvinylsiloxane.

Fig. 11: Digital impression with TRIOS.

Fig. 12a: Digital planning of the provisional restorations.

Fig. 12b: Provisional restorations intraorally (Telio CAD).

Fig. 13: Analogue workflow (refractory dies, built-up veneers, adjustments, staining/glazing).

Fig. 14: Digital workflow (3-D printed model, CAD/CAM veneers, adjustments, staining/glazing).

Fig. 15a: Feldspathic veneers with try-in paste.

Fig. 15b: CAD/CAM veneers with try-in paste.

Fig. 15c: First quadrant feldspathic veneers and second quadrant CAD/CAM veneers simultaneously with try-in paste.

Fig. 16a: Isolation fi eld and try-in of the fi t of the veneers on teeth #11 and 21.

Fig. 16b: Etching of the enamel for 30 seconds with a 32 % orthophosphoric acid.

Fig. 16c: Application of the bonding agent.

Fig. 16d: Final polymerisation of the veneers.

Fig. 16e: Veneers in situ before finishing and polishing procedures.

Fig. 16f: Final outcome immediately after removal of the rubber dam.

Fig. 17a: Final outcome one week later.

Fig. 17b: Final outcome one week later, frontal view.

Fig. 17c: Lips at rest, exposure of the incisal edges.

Fig. 17d: Wide smile.

Fig. 17e: Extraoral final photographs.

Fig. 18a: Subjective comparison criteria per step between analogue and digital workflows. PVS=polyvinylsiloxane.

Fig. 18b: Laboratory duration per step between analogue and digital workflows. PVS = polyvinylsiloxane.

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Digital vs. analogue workflow on ten ceramic veneers in the maxilla

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