Results of Hearing Outcome According to the Alloplastic Ossicular Prosthesis Materials.

The aim of this study is to compare the functional results and extrusion rates according to the type of ossciular alloplastic prosthesis. In this study, a retrospective analysis was performed. Sixty-one patients were involved in partial ossicular replacement (POR) cases and 70 patients were involved in total osscicular replacement (TOR) cases. In POR cases, Plastipore was used in 21 cases, hydroxyapatite in 20 cases, and titanium in 20 cases. In TOR cases, Plastipore was used in 20 cases, hydroxyapatite (HA) in 25 cases and titanium in 25 cases. We reviewed postoperative ABG (less than 20 dB or more than 20 dB) and the extrusion rate for more than 1 year follow-up period. In POR cases, ABG less than 20 dB were 71.4, 80.0, 85.0 % in plastipore, HA, and titanium prosthesis and in TOR cases, ABG less than 20 dB were 25.0, 28.0, 32.0 % in plastipore, HA, and titanium prostheses, respectively. In POR cases, extrusion rates (ER) were 9.5, 5.0, 5.0 % in plastipore, HA, and titanium prosthesis, respectively. In TOR cases, ER were 15.0, 8.0, 4.0 % in plastipore, HA, and titanium prosthesis, respectively. There were no significant differences in hearing gain results among plastipore, HA, and titanium in both POR and TOR cases, but the ER was significantly low in titanium. Clinically relatively better hearing gain and low-rate of extrusion were found in titanium prosthesis and thus this material is recommended in cases of ossicular alloplastic replacement surgery.