The Restorative Effects of Three Commonly Used Materials on Hearing Thresholds in Patients with Austin-Kartush Type A Ossicular Defects

Authors : Harun Gür, Kemal Koray Bal, Kemal Görür, Onur Ismi, Yusuf Vayisoğlu, Cengiz Özcan

Pages : 110-114

Doi:10.26650/Tr-ENT.2022.1210810

View : 15 | Download : 6

Publication Date : 2023-01-24

Article Type : Research

Abstract :Objective: This study aims to compare the effect on the hearing results of three different materials used in ossiculoplasty for patients with chronic otitis media (COM) and Austin-Kartush type A defect. Materials and Methods: This retrospective study includes 79 patients with the Austin-Kartush type A defect due to COM. The ossiculoplasty had been performed with a glass ionomer cement (GIC), titanium partial ossicular replacement prosthesis (PORP), or incus interposition between 2011-2021. Age, gender, operation side, hearing thresholds, computed tomography images, intraoperative findings, and middle ear risk index (MERI) were obtained from medical records. Air-conduction (AC) and bone-conduction (BC) thresholds were calculated by averaging the threshold values for 500, 1,000, 2,000 and 3,000 Hz, and air-bone gap (ABG) values were calculated by subtracting the BC thresholds from the AC thresholds, preoperatively and postoperatively. Hearing gains were obtained by subtracting ABG values in the first postoperative year from the preoperative ABG values. Results: This study included 32 male and 47 female patients. The GIC group had 28 patients, the incus interposition group had 28, and the PORP group had 23. No statistically significant difference occurred among the groups regarding MERI scores (p = 0.699). The mean preoperative ABG levels were 37.46±9.23dB in the GIC group, 38.96±11.35dB in the incus interposition group, and 37.34±10.16dB in the PORP group, while the mean postoperative ABG levels were 24.42±11.20dB in the GIC group, 23.25±10.09dB in the incus interposition group, and 22.82±13.59dB in the PORP group (p = 0.814). The ABG gains were 13.75±11.66dB in the GIC group, 15.71±11.55dB in the incus interposition group, and 14.52±9.98dB in the PORP group (p = 0.803). Conclusion: The incus long process defect or lack of the incus due to COM may be repaired with GIC, incus interposition, or titanium PORP, all with similar ABG gains.
Keywords : Chronic otitis media, ossiculoplasty, Austin-Kartush type A defect, glass ionomer cement, incus interposition, partial ossicular replacement prosthesis