The initial situation:
Crowns connected from 14 to 24.

Fabrication of the copings with deep-drawing foil 1mm and spacer foil 0.1 mm.

Wax up of the cervical area.

The wax-up of the crowns with collars in anatomically reduced shape.

The spruing:

• 3 mm sprues
• 4 mm runner bar
• 3.5 mm feeder sprues

Positioning the casting object inside the ring.

Investing:

At first the crowns are filled with a concentration of 95%.

When the investment material inside the crowns begins to set, the ring is poured out with a concentration of 75%.

If both investment concentrations are processed too wetly, they can be mixed.

After casting, the crowns are trimmed inside.

The single fit is checked by means of a marking spray.

Then the total fit is controlled.

The finished bridge work with an excellent fit is prepared for ceramic veneering.