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我科自1984年来,对75例因外伤而致前牙唇侧折断线在龈缘之上,舌侧折断线在牙槽嵴以上的牙冠斜折,采用自体接冠术,取得了较为满意的效果,现介绍如下: 操作步骤 1.用2％洗必泰清洗、刮除牙石,局麻下去髓,断冠浸泡在生理盐水中备用。然后按桩冠要求作根管和根面预备。 2.选择合适成品桩冠钉或用17号不锈钢丝弯制成柱形桩或锯形桩冠钉,使适中,制洞时应将舌面窝穿通,与冠钉试接直至两断面完全吻合。 3.干燥根管后调拌较稀的磷酸锌粘固剂,用探针少量多次填入,直至根尖。冠钉根内段亦需放少许,去除多余粘固剂,然后就位吹干。 4.调制相同色泽复合树脂置于两断面及断冠髓室洞内,对接后用手加压固定,同时去除多余树脂。
Our department since 1984, 75 cases of trauma caused by anterior lip fracture line in the gingival margin, lingual fracture line in the alveolar crest oblique bevel, the use of autologous coronary surgery, and achieved more satisfaction The results are as follows: Steps 1. Wash with 2% chlorhexidine, curettage, local anesthesia to the pulp, the crown soaked in saline standby. Then press the crown required for root canal and root preparation. 2. Select the appropriate finished pile crown or stainless steel wire with 17 made of cylindrical pile or saw-shaped pile of nail, so that the hole should be made Tongue socket, and crown nail test until the two sections exactly match . 3. After drying the root canal mix dilute zinc phosphate cement, a small amount of probe filled a few times, until the root tip. Coronal nail root section also need to put a little, remove excess cement, and then dry in place. 4. Modulation of the same color composite resin placed in two cross-section and broken coronal cavities, butt pressure by hand after the fixed, while removing excess resin.