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桩冠又称钉冠,是利用金属桩插入根管内固位的人造冠。目前多采用患牙根管换药,牙胶尖根管充填后观察两月,无症状,再去除根管内充物,制作根面,取模后,体外制作桩冠,抛光打磨,口内粘接固位。此法需时较长,复诊次数多,选牙严格,对残冠过短,唇腭面凹陷有龋坏,无平行就位道的患牙均不能常规制作桩冠。我科于1987～1991年采用即刻桩冠修复治疗50例,62颗牙,经1～2年观察,尚未发现不良反应,效果满意,总结如下。
Pile crown, also known as nail crowns, is the use of metal posts inserted into the root canal fixation of artificial crowns. The current use of root canal dressing with teeth, gum root tip after filling two months of observation, asymptomatic, and then remove the root canal filling, making the root surface, take the model, in vitro production of post crown, polished and polished, oral stick Then fixed position. This method takes a long time, the number of referrals, strict selection of teeth, the crown is too short, lip and palate face depression caries, no parallel in place of the teeth of the road can not be routinely made pile crown. Our department from 1987 to 1991 with immediate post crown treatment of 50 cases, 62 teeth, after 1 to 2 years of observation, no adverse reactions, the results are satisfactory, summarized as follows.