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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.

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Presentation on theme: "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."— Presentation transcript:

1 metal ceramic crown

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

3 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

4 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

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

6 MAKING MODELS- GIROFORM SYSTEM -establishment impression

7 use of giroform putty

8 everything must be horizontally placed

9 inserting plates

10 drilling of repositioned plate

11 apparatus for drilling

12 repositioned plate with pins

13

14 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

15 vacuum mixer

16 casting the impression

17

18

19 applying drilled reposition plate with pins

20

21 finished model

22 cutup and treatment of stubs

23

24

25 remove of undercuts

26

27 application of varnish at 20 microns of thickness

28 appliction of Model Sealer for higher hardness of cervical line

29

30 built-up models in the articulator

31

32

33 making and modeling of coping

34

35 connect of wax pins

36 wax pattern investing

37

38 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)

39 investmet material-belavest SH

40 distilled water

41 begosol HE

42 mixing: 60 seconds under 1 bar

43

44 burning the wax at ° for 30 minutes

45 casting high-melting alloys

46 Bego fornaxT casting machine

47 metal alloy - wirobond 280

48 remove of investment material

49 Renfert sandblaster

50 after sandblasting at 90 microns of al u minium oxide

51 grinding

52 sandblasting

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

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

55 opaquer

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

57 application of ceramic material

58

59 burning of ceramics material

60

61 fitting on stump

62 grinding

63 second layer is for correction

64 burning of ceramics material at 900° for 1 min

65 grinding

66 glaze

67

68 FINISHED WORK


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