固定义齿的摘除以严格保护桥基牙为主的口腔内软硬组织免受损伤为原则。传统方法主要采用震碎粘固剂及割裂固位体等手段,但易损伤牙体或牙周组织。为此,作者将常用的金属破冠钳改制为脱冠钳,经临床对34例患者的应用,效果较满意,简介如下。取市售直型匙状喙金属破冠钳,在匙状喙内焊接一长0.5cm的金属针(长车针改制),针顶部磨圆钝。该针与钳刀片顶端距离0.5cm。钳刀片背部磨成圆弧状, Removal of fixed dentures to protect the bridge abutment based oral hard and soft tissue from damage for the principle. Traditional methods mainly use shattering cement and split retainer and other means, but can easily damage the tooth or periodontal tissue. To this end, the author will transform the commonly used metal crown crown clamp for the removal of the crown, the clinical application of 34 patients, the effect is more satisfactory, is as follows. Take a commercially available straight spoon-shaped beaker metal crown-breaking pliers, welding a long 0.5cm metal needle (long needle restructuring) in the spoon beak, needle top rounded blunt. The needle and the tip of the pincer blade distance 0.5cm. Pliers blade back into a circular arc-shaped,