固定——活动联合修复是指用附着体或双重冠技术来修复牙列缺损的方法。附着体由于其种类较多，适应证广泛，制做上相对双重冠简单，并具有固位力好，咀嚼效率高，戴用舒适美观等优点，因此逐渐受到临床医师的欢迎。关于ＯＰＡ型附着体的临床应用，八年前我院孙默予等曾进... Fixed-active joint repair refers to the attachment or double crown technique to repair dentition defect. Attachment because of its more types, a wide range of indications, the system is relatively simple double Crown, and has good retention, chewing high efficiency, wearing comfortable and beautiful, and so on, it gradually welcomed by clinicians. On the clinical application of OPA attachment, eight years ago, our hospital Sunmo to wait ...