Key of ASTRA - PowerPoint PPT Presentation

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Key of ASTRA

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  1. Key of ASTRA • Long term esthetic & function!! • The health of the peri-implant bone & soft tissue Unique key features • TiOblast surface • MicroThread implant neck • Conical Seal design between implant & abutment

  2. TiOblast surface • Blasting with titanium dioxide particle • Rough surface • Increase the interface shear strength • Strong mechanical coupling

  3. Microthread • Margial cortical bone • Most critical part of implant-bone interfaced • Peak stress arise • Smooth neck • High stress peak • Low bone mechanical stimulation • ASTRA neck portion • Not smooth • microthread • Microthread • Lower stress value

  4. Conical seal design • Strong,stable,tight connection • Seal off from surrounding tissue • Increased mechanical strength to the implant-abutment interface • Reduced peak stress occurred further down in the bone

  5. All-in-one kit • Snap on impression • Color coding • Abutment with carrier • Selection of height and width • Laser identification

  6. Restorative margin

  7. Restorative dimension Ultra,4,5 and 6 mm

  8. Easy to use Process Kit

  9. DIRECT abutment standard protocolNon modified procedure • Tissue depth gauge • Measure the thickness of soft tissue

  10. Select the ideal size of Direct abutment

  11. component

  12. Attach the carrier

  13. Delivery • 15 Ncm DA 5,6

  14. Snap-on • Flat surface of abutment-raised dot • Color coding • DA4-white • DA5-grey • DA6-blue • Block of hex with wax

  15. Use closed tray

  16. Seat the DA replica

  17. Snap the healing cap

  18. Temporary restoration-use healing cap

  19. Direct abutment-customizing protocol Iocclusal reduction procedure • Reduce the abutment to just below the laser band(1mm) • Maintaining the friction grip of carrier

  20. Take impression

  21. Reduce the replica to the laser-etched band

  22. Use the extra healing cap as the base for the wax-up • Remove the snap on ring inside the healing cap • Fabricate the prosthesis

  23. Direct abutment-customizing protocol IImodified abutment procedure • Customize the Direct abutment

  24. Grind to eliminate the snap on groove(to prevent stone model fracture)

  25. Delivery and tighten

  26. Standard Cr&Br impression • Pouring • Fabricate

  27. Recommended tightening torque

  28. Angled abutment • 20°angulated • Angled abutment screw

  29. Select the abutment • Break the glass ampule and drop into a titanium bowl filled with saline

  30. Place the abutment • 25NCm

  31. Abutment level impression • Angled abutment pick-up

  32. Pick-up impression

  33. Healing cap,angled • 10NCm

  34. Place the replica

  35. Model fabrication

  36. Semi-burnout cylinder • Cast-to technique

  37. Adjust the cylinder and fabricate the framework

  38. Framework try-in • Porcelain build up

  39. Superstructure is secured with bridge screw, slot or hex • 15NCm

  40. Titanium cylinder • Laser-welding tech

  41. Profile bar system • Fabricate working model with UniAbutment replica • Semi-burn out cylinder • Bar connection • Paralleing mandrel

  42. Casting & finishing • Press the green plastic spacer & place the bar restoration on the Uniabutment replica

  43. Block out the undercut & duplicate the master model • Place the housing & resin process

  44. Profile bar insert • Yellow:normal • White:reduced • Red:increased

  45. Ball attachment • Choose the ball attachment using the depth gauge • Attachment is installed • 15~20NCm

  46. Ball attachment pick-up: friction retention • Impression

  47. Place the replica • Master model • Fabricate a denture