Prefabricated Stock Trays for Impression of Auricular Region

Abstract

The conventional methods of impression making for maxillofacial defects are cumbersome and time consuming for both patient and operator. This study focuses upon standardizing and simplifying the impression making methodology for auricular prosthesis with the help of prefabricated stock trays for auricular region. The stock trays were designed on positive replicas of anatomical structures, broadly divided into long and narrow, short and broad and long and broad ear. For each stock tray, impressions of auricle, of patients of different morphology were made with plastic funnels of different shape and size ensuring at least 6 mm of space between the anatomical part and inner surface of funnel and master cast was obtained. Subsequent adaptation of wax was done and fabrications of stock stainless steel trays were done. A standardized stock tray for making of auricular impressions was developed. From this innovative technical procedure it is possible to get an accurate impression of auricular defects now by the use of prefabricated stock trays rather than the cumbersome conventional method.

Nasal reconstruction with silicone using customised impression technique

“…The various maxillofacial impression methods used and described in literature have been based on the materials available and the dexterity of the operator, making fabrication of an extraoral facial prosthesis more art than science. [6] The conventional method of making maxillofacial impression involved the use of irreversible hydrocolloid material reinforced with Type II gypsum. [7] Alternatively, high-viscosity polyvinyl silicone impression[8] material was used with the help of a suitable carrier.…”

Prosthetic Rehabilitation of Ocular Defect resulting from Pediatric Retinoblastoma

“… 10 Various ocular impression techniques described so far have been based upon the materials available and the dexterity of the operator, making fabrication of an extraoral prosthesis more art than science. 11 But each has its own integral advantages and disadvantages. Most can be placed into one of several broad categories: direct impression/external impression, impression with a stock ocular tray or modified stock ocular tray, impression using a stock ocular prosthesis, ocular prosthesis modif-cation and the wax scleral blank technique.…”

A Review on Prosthetic Rehabilitation of Maxillofacial Region

“…Simultaneously second mix is loaded in the funnel and placed passively over the syringed material. After the setting of the material, impression is taken out with a snap movement to avoid distortion [38] (Figures 3a and 3b).…”