목적: The purpose of this study was to evaluate functional hearing gain, speech performance with the bone-conduction implant Bonebridge. We present a series of our first 7 cases of Bonebridge implantation. 방법:From August 2014 to February 2015, a total of 7 consecutive Bonebridge patients were included. Three patients suffered from combined hearing loss, 1 from congenital atresia of the external auditory canal and three from single-sided deafness. Functional hearing gain with pure tone audiometry and speech perception in quiet outcomes were investigated. 결과:The mean age of the patients was 41.7 yaers old (range 18~72). They includes four males and three female patients. The surgical procedure with transmastoid approach was completed in all cases without complications. In all patients, functional hearing gain and speech perception score were improved postoperatively with Bonebridge implant. The overall average functional hearing gain of all patients (n=7) was 30.5 dB ( 14.3 standard deviation). Speech perception scores in quiet increased significantly from 11.2 (range 0-26%) percentage points to 65.7( 23.0 SD) percentage points. Evaluation of preoperative bone-conduction thresholds showed within 45dB in all patients. 결론:The Bonebridge presents a new bone-conduction implant, circumventing the problems of percutaneous screws, and provides satisfactory results concerning functional gain and speech perception. If computed tomography reveals that the bony anatomy is suitable, the operation technique is easy to perform and the audiological data are promising.