Keypoints
●The hearing improved significantly postoperatively in AC and ABG test,
mainly at low and mid frequencies.
●The hearing improvement in the tragus cartilage group was better from
250 to 1000 Hz, but the temporalis fascia group was significantly better
from 2000 to 4000 Hz.
●The TORP group had the best hearing improvement.
●The canal wall-down tympanoplasty group had poorer postoperative BC
outcomes compared to the tympanoplasty group at 4000 Hz.
●The influence of ossicular chain mechanics on BC is expressed at most
as the improvement for the frequency of 2000 Hz.