Group ITD(83 ears) Group ITL(91 ears) p
external auditory canal mycosis 3 0 0.029*
tympanic membrane atrophy thinning 5 0 0.018*
transient dizziness and vertigo 7 9 0.153
Pain 17 21 0.368
bleeding 7 10 0.289
tongue numbness 8 10 0.227
tinnitus 7 3 0.072
perforation 2 0 0.035*