metal ceramic crown

 is made up of metal and ceramics  metal is only thin layer on the stump  ceramics are chemically bonded on the metal construction

working procedure 1. impression of the upper and lower jaws in the mouth 2. making models-giroform system 3. cutup and treatment of stubs 4. built-up models in the articulator 5. waxing 6. wax pattern investing 7. casting high-melting alloys 8. cutting off casting pins 9. grinding of metal

working procedure 10. sandblasting 11. application of ceramic materials 12. wash opaquer 13. opaquer 14. ceramic material 15. grinding 16. corrections 17. glaze 18. submission to the surgery and integration into patient's mouth

IMPRESSION OF THE UPPER AND LOWER JAWS IN THE MOUTH -impression is made of SILICONE impression material

MAKING MODELS- GIROFORM SYSTEM -establishment impression

use of giroform putty

everything must be horizontally placed

inserting plates

drilling of repositioned plate

apparatus for drilling

repositioned plate with pins

Mixing ratio  75 grams of plaster glass stone  17 ml of water  Mixing 30 seconds manually and 30 seconds in vacuum mixer under 1 bar

vacuum mixer

casting the impression

applying drilled reposition plate with pins

finished model

cutup and treatment of stubs

remove of undercuts

application of varnish at 20 microns of thickness

appliction of Model Sealer for higher hardness of cervical line

built-up models in the articulator

making and modeling of coping

connect of wax pins

wax pattern investing

mixing ratio  investment material belavest  -100 grams of belavest sh  -10 ml of distilled water  -15 ml of begosol  (change in summer-20 ml of distilled water and 25 begosol)

investmet material-belavest SH

distilled water

begosol HE

mixing: 60 seconds under 1 bar

burning the wax at ° for 30 minutes

casting high-melting alloys

Bego fornaxT casting machine

metal alloy - wirobond 280

remove of investment material

Renfert sandblaster

after sandblasting at 90 microns of al u minium oxide

grinding

sandblasting

Thickness on aproximal-0,3 mm on occlusal 0,5 mm

wash opaquer-15 min, ivoclar Programat P500/G2 furnace at 930°

opaquer

the individual layer of ceramics  wash opaquer  opaquer  dentin  enamel  transparent  glaze

application of ceramic material

burning of ceramics material

fitting on stump

grinding

second layer is for correction

burning of ceramics material at 900° for 1 min

grinding

glaze

FINISHED WORK