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metal ceramic crown

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. impression of the upper and lower jaws in the mouth making models-giroform system cutup and treatment of stubs

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metal ceramic crown

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  1. metal ceramic crown

  2. is made up of metal and ceramics • metal is only thin layer on the stump • ceramics are chemically bondedon the metal construction

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

  4. working procedure • sandblasting • application of ceramic materials • wash opaquer • opaquer • ceramic material • grinding • corrections • glaze • submission to the surgery and integration into patient's mouth

  5. IMPRESSION OF THE UPPER AND LOWER JAWS IN THE MOUTH -impressionismadeof SILICONE impressionmaterial

  6. MAKING MODELS-GIROFORM SYSTEM-establishment impression

  7. use ofgiroformputty

  8. everythingmustbehorizontallyplaced

  9. inserting plates

  10. drilling of repositioned plate

  11. apparatusfordrilling

  12. repositioned plate with pins

  13. 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

  14. vacuum mixer

  15. casting the impression

  16. applying drilled repositionplate with pins

  17. finished model

  18. cutupandtreatmentofstubs

  19. remove of undercuts

  20. applicationofvarnishat 20 micronsofthickness

  21. applictionof Model Sealerforhigherhardnessofcervical line

  22. built-up models in the articulator

  23. making and modeling of coping

  24. connect of wax pins

  25. waxpatterninvesting

  26. 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)

  27. investmetmaterial-belavest SH

  28. distilled water

  29. begosol HE

  30. mixing:60 secondsunder 1 bar

  31. burning the waxat 950-1050° for 30 minutes

  32. casting high-melting alloys

  33. BegofornaxT casting machine

  34. metal alloy - wirobond 280

  35. removeofinvestmentmaterial

  36. Renfert sandblaster

  37. after sandblasting at 90 microns of aluminium oxide

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