Brask T
Odense University Hospital, Denmark.
Laryngoscope. 1999 Apr;109(4):573-6. doi: 10.1097/00005537-199904000-00010.
The aim of this study is to describe a method to repair small defects (1 to 2 mm) of the ossicular chain by means of glass ionomer cement (GIC) alone. Larger defects can be repaired with a combination of GIC and a platinum wire prosthesis. GIC is a two-component hybrid material consisting of inorganic glass particles surrounded by an insoluble hydrogel matrix. GIC has been used by dentists for many years, but only a few reports describe the use of GIC in human middle ear surgery. Many investigators have proved that most GICs are biocompatible, biostable, and well tolerated by bone and soft tissue.
From 1994 to 1996 GIC was used in 97 middle ear operations. In 44 cases small defects of the ossicular chain were reconstructed with GIC alone. The observation period ranged from 1 to 4 years.
Nearly all operations were performed with the patient under local analgesia.
The postoperative air-bone gap was less than 20 dB in 83.3%. Compared with results from comparable operations, the GIC results are significantly better. One patient had reoperation because the cement had loosened from the bone as a result of faulty GIC operation technique.
Repair of defects of the ossicular chain with GIC is an easy, efficient, quick, and inexpensive method, which ought to be kept in mind for future middle ear surgery. No complications in the middle ear were related to GIC.
本研究旨在描述一种仅使用玻璃离子水门汀（GIC）修复听骨链小缺损（1至2毫米）的方法。较大的缺损可用GIC与铂丝假体联合修复。GIC是一种双组分混合材料，由无机玻璃颗粒被不溶性水凝胶基质包围组成。GIC已被牙医使用多年，但仅有少数报告描述了GIC在人类中耳手术中的应用。许多研究人员已证明，大多数GIC具有生物相容性、生物稳定性，并且能被骨和软组织良好耐受。
1994年至1996年期间，97例中耳手术使用了GIC。其中44例仅用GIC重建了听骨链小缺损。观察期为1至4年。
几乎所有手术均在患者局部麻醉下进行。
术后气骨导差小于20分贝的占83.3%。与类似手术结果相比，GIC的结果明显更好。1例患者因GIC操作技术有误导致水门汀从骨上松动而进行了再次手术。
用GIC修复听骨链缺损是一种简便、有效、快速且经济的方法，在未来中耳手术中应予以考虑。中耳未出现与GIC相关的并发症。
