PMC5949170_01
Profile and frontal photographs of patient missing ear.
CRIOT2018-2689098.001.jpg
PMC5949170_01_CRIOT2018-2689098.001.jpg
fig1
Examination and history revealed that the patient had suffered from electric burns with scar formation, but some rudimentary ear was present in the tragus region of missing right ear (Figure 1).
Impression of donor ear using irreversible hydrocolloid.
CRIOT2018-2689098.002.jpg
PMC5949170_01_CRIOT2018-2689098.002.jpg
fig2
While making an impression, the external auditory canal was blocked with a cotton plug and the impression was made by irreversible hydrocolloid and with the gauge in between, and backing is done by quick-setting plaster to provide support for the impression (Figure 2).
Impression of missing ear using polyvinylsiloxane.
CRIOT2018-2689098.003.jpg
PMC5949170_01_CRIOT2018-2689098.003.jpg
fig3
The impression of the donor ear was made with light body additional silicone, and the impression was poured with the dental stone to get the master cast of the defect site and the cast of the normal ear (Figure 3).
Fabrication using three piece mould system.
CRIOT2018-2689098.004.jpg
PMC5949170_01_CRIOT2018-2689098.004.jpg
fig4
For this patient, the donor technique was used and the impression was made and filled with modelling wax and later retrieved from the impression (Figure 4(a)). To get the three piece mould, top portion of the dental flask was used as the base, the master cast along with the wax ear pattern was placed on this top portion of the flask, and dental plaster was poured to flush with the surface of the cast leaving no undercuts (Figure 4).
Colour matching using intrinsic factor II stain.
CRIOT2018-2689098.005.jpg
PMC5949170_01_CRIOT2018-2689098.005.jpg
fig5
Care was taken while adding colour, as colour loading will lead to opacity and lifeless appearance (Figure 5).
Packing using dark and light shades of RTV silicones.
CRIOT2018-2689098.006.jpg
PMC5949170_01_CRIOT2018-2689098.006.jpg
fig6
Cured prosthesis was retrieved from the mould, cleaned thoroughly with soap, and the excess silicone flesh was trimmed from the margins (Figure 6).
Frontal and profile photographs after insertion of ear prosthesis.
CRIOT2018-2689098.007.jpg
PMC5949170_01_CRIOT2018-2689098.007.jpg
fig7
The prosthesis was tried on the patient and margins were trimmed as per requirement, and then the prosthesis was attached to the spectacle frame and placed in position (Figure 7).