Journal review /certified fixed orthodontic courses by Indian dental academy


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The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.

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Journal review /certified fixed orthodontic courses by Indian dental academy

  1. 1. Journal - Review The ocular impression: Review of literature and presentation of an alternate technique . INDIAN DENTAL ACADEMY Leader in continuing dental education
  2. 2. Impressions in ocular prosthesis The direct impression / External Impression Impression with stock ocular tray Stock ocular tray modifications Impression with custom ocular tray Impression using stock ocular prosthesis Ocular prosthesis modification Wax scleral blank technique
  3. 3. Direct impression /external impression  Low viscosity alginate or reversible hydrocolloid injected directly in to the socket.  A rigid stock tray is used.  Stone mold is made from the impression and wax is poured in to this mold.
  4. 4. Impression with stock ocular tray     Most common technique Proposed by Allen and Webster It has a hollow stem perforated
  5. 5. Stock ocular tray modifications  Maloney modified by placing 3 channels on the superior edge  Engelmeier suggested Ticonium stock trays  Sykes, Essop, and Veres advocated the use of modeling plastic impression compound
  6. 6.  Stock ocular prosthesis
  7. 7. Impression with custom ocular tray  Suggested by Miller  Preparation of a custom ocular tray using exising prosthesis or wax shell
  8. 8. Ocular prosthesis modification    Suggested by Chalian Smith suggested relining of the stock prosthesis with korrecta wax No.4 Ow and Amrith advocated use of a tissue conditioner as a reline material
  9. 9. Wax scleral blank technique  McKinstry suggested compression impression technique- preparation of wax pattern based on the examination of the site.  Schneider suggested obtaining wax blank by duplicating the patient’s conformer.
  10. 10. PVS cope and indexed cast with existing prosthesis in place
  11. 11. Mold filled with chemical – cure polymethyl methacrylate
  12. 12. Perforated acrylic resin tray
  13. 13. Shortened 5ml syringe
  14. 14. Custom tray fitted with syringe tip
  15. 15. Tray with screwed syringe barrel
  16. 16. The resulting impression
  17. 17. Impression suspended in a cup
  18. 18. The wax scleral pattern is removed from the alginate mold
  19. 19. Discussion  Advantages- improved fit, mobility, and esthetics  Disadvantages – increased fabrication time, and cost.
  20. 20. Conclusion Numerous impression and fitting methods exist. Effectiveness and desirability often depend on the patient’s presentation, operator experience, and materials and equipment available.
  21. 21. Cross references    Maxillofacial Prosthetics multidisciplinary practice by Varoujan A.Chalian, pg 294 – 297. Custom made ocular prosthesis –Sykes LM, jpd 1996, 75;1-3 Ow RK, Amrith S; Ocular prosthetics: Use of a tissue conditioner material to modify a stock ocular prosthesis. JPD 1997, 78, 218-222.
  22. 22. Thank you For more details please visit