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Department of Prosthodontics TSMU

Department of Prosthodontics TSMU. Replacement of defects of teeth and dentition by cast and metal-ceramics prostheses. Indication. Technological characteristics and clinical use. METAL CERAMIC CROWNS. METAL-CERAMIC RESTORATION. ALSO CALLED PORCELAIN FUSED TO METAL RESTORATION

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Department of Prosthodontics TSMU

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  1. Department of ProsthodonticsTSMU Replacement of defects of teeth and dentition by cast and metal-ceramics prostheses. Indication. Technological characteristics and clinical use

  2. METAL CERAMIC CROWNS

  3. METAL-CERAMIC RESTORATION ALSO CALLED PORCELAIN FUSED TO METAL RESTORATION (PFM). CONSIST OF A CERAMIC LAYER BONDED TO A THIN CAST METAL COPING THAT FITS OVER THE TOOTH PREPARATION.

  4. METAL CERAMIC RESTORATION COMBINES THE STRENGTH AND ACCURATE FIT OF A CAST RESTORATION WITH THE COSMETIC EFFECT OF A CERAMIC CROWN.

  5. METAL-CERMIC RESTORATION WITH THE METAL UNDERSTRUCTURE, METAL-CERAMIC RESTORATIONS HAVE GREATER STRENGTH THAN RESTORATIONS MADE OF CERAMIC ALONE.

  6. METAL-CERMIC RESTORATION CAN BE USED IN A WIDE VARIETY OF SITUATIONS INCLUDING THE REPLACEMENT OF MISSING TEETH WITH FPD’S.

  7. METAL-CERMIC RESTORATION IS A COMBINATION OF METAL AND CERAMIC, THE TOOTH PREPARATION IS ALSO COMBINATION OF DEEP REDUCTION FACIALLY AND SHALLOWER REDUCTION LINGUALLY. THERE MAY BE A WING ON EACH PROXIMAL SURFACE WHERE THE DEEP REDUCTION ENDS AND THE SHALLOWER PROXIMAL REDUCTION BEGINS.

  8. METAL-CERMIC RESTORATION ADEQUATE REDUCTION IS ESSENTIAL FOR ACHIEVING A GOOD ESTHETIC RESULT.

  9. METAL-CERMIC RESTORATION Inadequate space for a sufficient thickness of ceramic material- 1. Poorly contoured restoration affecting both esthetic and health of the surrounding gingiva.

  10. METAL-CERMIC RESTORATION 2.The shade and translucency of the restoration will not match the adjacent natural teeth.

  11. ANTERIOR METAL-CERAMIC CROWNS A UNIFORM REDUCTION OF APPROXIMATELY 1.2MM IS NEEDED OVER THE ENTIRE FACIAL SURFACE.

  12. ANTERIOR METAL-CERAMIC CROWNS TO ACHIEVE ADEQUATE REDUCTION WITHOUT ENCROACHING UPON THE PULP – FACIAL SURFACE PREPARED IN TWO PLANES THAT CORRESPOND ROUGHLY TO THE TWO GEOMETRIC PLANES PRESENT ON THE FACIALSURFACE OF AN UNCUT TOOTH

  13. ANTERIOR METAL-CERAMIC CROWNS FACIAL SURFACE IS PREPARED IN A SINGLE PLANE THAT IS AN EXTENSION OF THE GINGIVAL PLANE – INCISAL EDGE WILL PROTRUDE RESULTING IN BAD SHADE MATCH OR OVERCONTOURED “BLOCK”.

  14. ANTERIOR METAL-CERAMIC CROWNS FACIAL SURFACE PREPARED IN ONE PLANE THAT HAS ADEQUATE FACIAL REDUCTION IN THE INCISAL ASPECT- FACIAL SURFACE OVERTAPERED AND TOO CLOSE TO THE PULP.

  15. ARMAMENTARIUM LAB KNIFE WITH NO:25 BLADE SILICONE PUTTY ROUND – END TAPERED DIAMOND SMALL WHEEL DAIMOND LONG NEEDLE DAIMOND RADIAL FISSURE BUR (ROUNDED SHOULDER) MODIFIED BINANGLE CHISEL

  16. ANTERIOR METAL-CERAMIC CROWNS SILICONE INDEX MADE BEFORE TOOTH PREPARATION TOOTH BADLY BROKEN DOWN, INDEX MADE ON WAXED UP DIAGNOSTIC CAST.

  17. ANTERIOR METAL-CERAMIC CROWN PREPARATION STEP NO : 1 PLACEMENT OF DEPTH ORIENTATION GROOVES - ( 1.2MM ) THE LABIAL GROOVES CUT IN TWO SETS • ONE SET PARALLEL WITH THE GINGIVAL HALF OF LABIAL SURFACE • ONE SET PARALLEL WITH THE INCISAL HALF OF LABIAL SURFACE

  18. ANTERIOR METAL-CERAMIC CROWN PREPARATION

  19. ANTERIOR METAL-CERAMIC CROWN PREPARATION

  20. ANTERIOR METAL-CERAMIC CROWN PREPARATION STEP NO : 2 INCISAL REDUCTION- (2MM) ROUND –END TAPERED DAIMOND.

  21. ANTERIOR METAL-CERAMIC CROWN PREPARATION Inadequate incisal reduction results in poor incisal translucency

  22. ANTERIOR METAL-CERAMIC CROWN PREPARATION STEP NO : 3 LABIAL REDUCTION (INCISAL HALF) ROUND- END TAPERED DAIMOND.

  23. ANTERIOR METAL-CERAMIC CROWN PREPARATION STEP NO :4 LABIAL REDUCTION (GINGIVAL HALF) ROUND-END TAPERED DAIMOND

  24. ANTERIOR METAL-CERAMIC CROWN PREPARATION STEP NO : 5 LINGUAL REDUCTION (0.7 -1MM ) SMALL WHEEL DAIMOND.

  25. ANTERIOR METAL-CERAMIC CROWN PREPARATION STEP NO :6 INITIAL PROXIMAL REDUCTION LONG NEEDLE DAIMOND

  26. ANTERIOR METAL-CERAMIC CROWN PREPARATION STEP NO : 7 LINGUAL AXIAL REDUCTION ROUND - END TAPERED DAIMOND.

  27. ANTERIOR METAL-CERAMIC CROWN PREPARATION STEP NO : 8 SMOOTHENING THE SHARP ANGLES

  28. ANTERIOR METAL-CERAMIC CROWN PREPARATION

  29. ANTERIOR METAL-CERAMIC CROWN PREPARATION FACIAL MARGIN • DEEP CHAMFER • SHOULDER WITH BEVEL • SHOULDER • RADIAL SHOULDER

  30. ANTERIOR METAL-CERAMIC CROWN PREPARATION DEEP (HEAVY ) CHAMFER PROVIDE 90-DEGREE CAVOSURFACE ANGLE WITH A LARGE –RADIUS ROUNDED INTERNAL ANGLE.

  31. ANTERIOR METAL-CERAMIC CROWN PREPARATION RADIAL SHOULDER MODIFIED FORM OF SHOULDER SMALL RADIUS INTERNAL ANGLE WITH 90-DEGREE CAVOSURFACE

  32. ANTERIOR METAL-CERAMIC CROWN PREPARATION SHOULDER WITH BEVEL THIS DESIGN CAN BE USED- GINGIVAL ESTHETICS ARE NOT CRICTICAL

  33. ANTERIOR METAL-CERAMIC CROWN PREPARATION IMPROVED ESTHETICS ALL CERAMIC LABIAL MARGIN THIS ELIMINATES THE METAL COLLAR AT THE FACIOGINGIVAL MARGIN OF THE FINISHED METAL- CERAMIC RESTORATION

  34. ANTERIOR METAL-CERAMIC CROWN PREPARATION IMPROVED ESTHETICS ALL CERAMIC LABIAL MARGIN THIS ELIMINATES THE METAL COLLAR AT THE FACIOGINGIVAL MARGIN OF THE FINISHED METAL- CERAMIC RESTORATION

  35. ANTERIOR METAL-CERAMIC CROWN PREPARATION

  36. POSTERIOR METAL-CERAMIC CROWNS

  37. POSTERIOR METAL-CERAMIC CROWNS STEP NO : 1 OCCLUSAL REDUCTION FOLLOWED BY FUNCTIONAL CUSP BEVEL

  38. POSTERIOR METAL-CERAMIC CROWNS STEP NO : 2 DEPTH ORIENTATION GROOVES

  39. POSTERIOR METAL-CERAMIC CROWNS STEP NO :3 FACIAL REDUCTION- OCCLUSAL HALF

  40. POSTERIOR METAL-CERAMIC CROWN STEP NO :4 FACIAL REDUCTION GINGIVAL HALF

  41. POSTERIOR METAL-CERAMIC CROWN STEP NO: 5 PROXIMAL AXIAL REDUCTION

  42. POSTERIOR METAL-CERAMIC CROWN STEP NO :6 LINGUAL AXIAL REDUCTION

  43. POSTERIOR METAL-CERAMIC CROWN STEP NO : 7 AXIAL FINISHING

  44. POSTERIOR METAL-CERAMIC CROWN STEP NO :8 GINGIVAL BEVEL

  45. POSTERIOR METAL-CERAMIC CROWN

  46. POSTERIOR METAL-CERAMIC CROWN

  47. POSTERIOR METAL-CERAMIC CROWN

  48. CAD/CAM system

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