Fig. 3From: Ultrasonic bone removal from the ossicular chain affects cochlear structure and functionDose Response Analysis. There was no difference in SNR after opening the bulla to gain access to the middle ear, however there was a trend towards a dose-response relationship with decreasing SNR after increasing applications of 10 s of UBD to malleus, and 2 subsequent re-application of 10s UBDBack to article page