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用普鲁卡因肾上腺素麻醉,自冠折断面髓孔抽净根髓,扩大根管,用双氧水冲洗、拭干后予以常规根管充填,摄片观察充填良好后,将离体的牙冠自折断处形成倒凹形,保持离体残冠周缘原有的形态,以利与残根断端密合。制备一枚适宜的不锈钢桩钉,置1/2长度于髓腔或根管内,1/2留在外面的残冠内。取出不锈钢钉,用50%磷酸处理离体残冠倒凹形,以适当的比例调和TM牙釉质粘合剂,再将不锈钢钉固定在离体残冠内,直
With procaine epinephrine anesthesia, coronal hole from the coronoid fracture pumping net root, expand the root canal, rinse with hydrogen peroxide, after drying to be conventional root canal filling, radiography observation filling well, the isolated crown Since the break at the formation of inverted concave shape, to maintain the original form of pericarps around the edge, in order to facilitate the end of broken roots and close together. Prepare a suitable stainless steel post nail, set 1/2 length in the medullary cavity or root canal, 1/2 remaining in the residual crown. Remove the stainless steel nails, with 50% phosphoric acid treatment of residual crown inverted into concave shape, with a suitable ratio to reconcile TM enamel adhesive, and then stainless steel nail fixed in the isolated residual crown, straight