Otolaryngology Research Center, Department of Otolaryngology, Shiraz University of Medical Sciences, Shiraz, Iran
J Int Adv Otol. 2020 Aug;16(2):234-240. doi: 10.5152/iao.2020.5129.
The objective of this study was to compare hearing results of fluoroplastic (Teflon) Causse Loop Piston with platinum/titanium (Big Easy) Piston in patients who underwent stapedotomy due to otosclerosis.
In this prospective randomized clinical trial study, Causse Loop Piston prosthesis was used in 76 ears and the Big Easy Piston prosthesis in 72 ears. The main outcomes were preoperative and postoperative pure tone audiometry and air-bone gap (ABG).
Postoperative ABG closure was not significantly different between both groups. However, the Causse Loop Piston resulted in a significant improvement of the air conduction (AC) in frequencies of 250, 500, and 1,000 Hz. In addition, the improvement of speech reception threshold (SRT) was significantly higher in Causse Loop Piston group.
We achieved similar postoperative ABG closure in short-term with both prostheses. However, at low frequencies, AC gain was higher in Causse Loop Piston group. In addition, patients in this group yielded better SRT.
本研究旨在比较耳硬化症患者行镫骨切除术时使用氟塑料（特氟隆）Causse 环活塞与白金/钛（Big Easy）活塞的听力结果。
在这项前瞻性随机临床试验研究中，76 耳使用 Causse 环活塞假体，72 耳使用 Big Easy 活塞假体。主要结局是术前和术后纯音听阈和气骨导差（ABG）。
两组术后 ABG 闭合无显著差异。然而，Causse 环活塞可显著改善 250、500 和 1000 Hz 频率的气导。此外，Causse 环活塞组的言语接受阈（SRT）改善更为显著。
我们使用两种假体均获得了相似的术后 ABG 闭合。然而，在低频时，Causse 环活塞组的气导增益更高。此外，该组患者的 SRT 更好。
