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1. Journal - Review
The ocular impression: Review of literature
and presentation of an alternate technique .
INDIAN DENTAL ACADEMY
Leader in continuing dental education
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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
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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.
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4. Impression with stock ocular tray




Most common technique
Proposed by Allen and
Webster
It has a hollow stem
perforated
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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
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6. 
Stock ocular prosthesis
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7. Impression with custom ocular tray

Suggested by Miller

Preparation of a custom ocular tray using exising
prosthesis or wax shell
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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
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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.
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10. PVS cope and indexed cast with existing
prosthesis in place
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11. Mold filled with chemical – cure polymethyl
methacrylate
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12. Perforated acrylic resin tray
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13. Shortened 5ml syringe
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14. Custom tray fitted with syringe tip
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15. Tray with screwed syringe barrel
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16. The resulting impression
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17. Impression suspended in a cup
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18. The wax scleral pattern is removed from
the alginate mold
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19. Discussion

Advantages- improved fit, mobility, and
esthetics

Disadvantages – increased fabrication time, and
cost.
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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.
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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.
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22. Thank you
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