Porcelain application methods


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Porcelain application methods

  1. 1. POCELAIN APPLICATION METHODS. INDIAN DENTAL ACADEMY Leader in continuing dental education www.indiandentalacademy.com www.indiandentalacademy.com
  2. 2. OPAQUE PORCELIAN APPLICATION. www.indiandentalacademy.com
  3. 3. GLASS ROD TECHNIQUE • First, lightly wet the oxidized metal metal substructure to be veneered with distilled water and gently vibrate the casting for thorough wetting. www.indiandentalacademy.com
  4. 4. • Use point end of glass rod to apply the opaque porcelain.begin the opaquing most convex portion of the metal. www.indiandentalacademy.com
  5. 5. • Move the opaque towards the porcelain metal junction from one inter proximal area to to other & cover the incisal area. www.indiandentalacademy.com
  6. 6. • Lightly tap the hemostat with metal instrument to condense the opaque porcelain and excess opaquing liquid will raise to the surface. www.indiandentalacademy.com
  7. 7. • Place the edge of tissue,against the an edge of the moist opaque porcelain.hold the tissue in place until the liquid is absorbed and takes on a dull appearance. www.indiandentalacademy.com
  8. 8. • Blend the opaque at the porcelain metal junction to establish a gradual transition from opaque to external surface. www.indiandentalacademy.com
  9. 9. BRUSH TECHNIQUE • Opaque can also be applied with the brush.load the brush tip with opaque porcelain and carry it to the coping. www.indiandentalacademy.com
  10. 10. • Application of the opaque twice is also recommended.initially thin layer of the opaque and complete masking is followed. www.indiandentalacademy.com
  11. 11. DENTIN APPLICATION METHOD. www.indiandentalacademy.com
  12. 12. • Carefully return the cleaned,opaqued coping to the master cast.place folded tissue or bottling paper on the lingual side of the restoration. www.indiandentalacademy.com
  13. 13. • To minimize the potential for entrapping air in the porcelain, move the tip of the pointed brush through the mixed dentin porcelain.remove the brush with dentin porcelain captured on the brush tip. www.indiandentalacademy.com
  14. 14. • Apply the porcelain to the most convex area on the restoration. www.indiandentalacademy.com
  15. 15. • Gently push the porcelain to the intrproximal,incisal areas. www.indiandentalacademy.com
  16. 16. • Move the porcelain down to the incisal edge and lightly blot the build up to condense the porcelain on the substructure. www.indiandentalacademy.com
  17. 17. • To create the mesialfacial line angle,wipe the brush to dry it slightly and reduce the pointing then lightly move from the mesial gingival area to mesial-incisal area. www.indiandentalacademy.com
  18. 18. • Point the brush and add additional dentin porcelain to lingual aspect of the incisal edge.smooth and condense the incisal edge from the lingual and facial aspects. www.indiandentalacademy.com
  19. 19. • Use a razor knife to cut back the incisal edge from between 1.0to1.5mm www.indiandentalacademy.com
  20. 20. • Remove dentin porcelain at the mesial inter proximal line angle.extend the cut to the junction of the middle and gingival 1/3rd for younger patients. www.indiandentalacademy.com
  21. 21. • At the distal intrproximal line angle,make a cut form the incisal edge towards the gingival 1/3rd as far as required for the esthetics. www.indiandentalacademy.com
  22. 22. • Examine the restoration from an incisal view for symmetry and adequacy of the cut back. www.indiandentalacademy.com
  23. 23. ENAMEL APPLIACTION METHODS. www.indiandentalacademy.com
  24. 24. • With pointed brush,apply enamel porcelain to one corner of cutback. www.indiandentalacademy.com
  25. 25. • Add more enamel porcelain and move it across the facial surface in the incisal one third. www.indiandentalacademy.com
  26. 26. • Blend the enamel porcelain at the junction of middle and gingival 1/3rd &begin to establish the incisal edge & condense the porcelain by blotting periodically. www.indiandentalacademy.com
  27. 27. • Blend the enamel porcelain into gingival 1/3rd on the facial surface.Recreate the interproximal contours and line angles. www.indiandentalacademy.com
  28. 28. • Shape the mesialincisal corner as required for each case.examine the build up form incisal view&evaluate the overall shape . www.indiandentalacademy.com
  29. 29. ALTERNATIVE BUILD UP TECHNIQUE. www.indiandentalacademy.com
  30. 30. • Apply the opaque to mask the underlying metal. www.indiandentalacademy.com
  31. 31. • Complete & smooth the dentin buildup. www.indiandentalacademy.com
  32. 32. • Create three developmental lobes with the pointed brush. www.indiandentalacademy.com
  33. 33. • Invert the cast & place translucent porcelain in the two developmental groove.apply enamel porcelain to the inter proximal areas. www.indiandentalacademy.com
  34. 34. • Continue this process until the entire crown is built to full contour. www.indiandentalacademy.com
  35. 35. • Finally, use the whipping brush to gently smooth the entire porcelain build up. www.indiandentalacademy.com
  36. 36. • Once the porcelain has been fired,you should be able to observe demonstrable mamelons in the restoration. www.indiandentalacademy.com
  37. 37. PORCELAIN APLICATION FOR FIXED PARTIAL DENTURE. www.indiandentalacademy.com
  38. 38. • Apply and condense opaque porcelain.Cover any gray areas,and fire the prosthesis. www.indiandentalacademy.com
  39. 39. • Return the opaqued FPD to the master cast with a piece of tissue paper cut to cover the entire pontic area. www.indiandentalacademy.com
  40. 40. • Add a small portion of dentin porcelain to the under side of the pontic on the FPD frame work. www.indiandentalacademy.com
  41. 41. • Return the frame work to the master cast and gently rock it back and forth until it seats completely.Remove the frame work and inspect the tissue side of the pontic.this area should cover completely with porcelain and well condensed. www.indiandentalacademy.com
  42. 42. • Place the frame work back on the master cast and apply dentin porcelain or add and condense opacous dentin to the cervical areas of the three components. www.indiandentalacademy.com
  43. 43. • Complete the dentin build up. www.indiandentalacademy.com
  44. 44. • Create the developmental lobes.Use thin razor knife to cut through inter proximal areas and individualize the teeth. www.indiandentalacademy.com
  45. 45. • Add enamel veneering material. www.indiandentalacademy.com
  46. 46. • Condense the porcelain build up. www.indiandentalacademy.com
  47. 47. • Measure the mesialdistal width of each tooth with a Boley gauge.compare that measurement with porcelain build up. www.indiandentalacademy.com
  48. 48. • Use a knife or other instrument to make any necessary adjustments in the mesial-distal width. www.indiandentalacademy.com
  49. 49. • Facial view of the build up. www.indiandentalacademy.com
  50. 50. • Lingual view of the build up. www.indiandentalacademy.com
  51. 51. • Three unit FPD after firing. www.indiandentalacademy.com
  52. 52. FIRING PROCEDURES. • The large bulk of the build up will require more time to dry and pre heat than the opaque porcelain. • Put the restoration on saggar tray place it on the muffle stand of the furnace. • Properly matured porcelain have a slightly orange peel appearance when fired correctly. • Do not under fire the porcelain.porcelain that has not matured properly has no shine to the surface & internally has cloudy appearance. www.indiandentalacademy.com
  53. 53. • Restorations that are under fired porcelain often have to be stripped form metal and rebuilt. • Over fired porcelains appears to be glazed and the surface has little or none of the pebbly appearance. • The firing temperature is usually lowered 10 degrees with each correction firing, so that initial build up dos not get effected. www.indiandentalacademy.com
  54. 54. Thank you For more details please visit www.indiandentalacademy.com www.indiandentalacademy.com