PMC3860020_01
(a) Pre-hearing aid fitting PTA. (b) Post removal of impression material PTA.
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His pure tone audiometry (PTA) at this stage revealed air conduction thresholds of 55-95 decibels Hearing Level (dB HL) with an air-bone gap of 20-45 dB HL in the right ear (Fig. 1a). The patient's pain had completely resolved but PTA did reveal a worsening of his hearing on the right (Fig. 1b).
Photograph of impression material passing through the tympanic membrane into the middle ear cleft.
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The pink impression material was visible passing through this perforation into the middle ear cleft (Fig. 2).
Photograph of the right tympanic membrane perforation post impression material removal.
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The material was gently removed using a curved needle and micro-forceps and the edges of the perforation were freshened (Figs. 3 and 4).
Photograph of the impression material after removal.
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The material was gently removed using a curved needle and micro-forceps and the edges of the perforation were freshened (Figs. 3 and 4).