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作者报告用牙科显微镜进行根尖手术,放大倍数为7 X,显微镜装有显微电视摄像机,学生可以在监测仪上观看手术操作活动。局麻后打开全厚层粘骨膜瓣暴露骨质,在接近感染牙齿的根尖部很容易探到一个穿孔,充分扩创后对含有囊肿的根尖部进行彻底清创,然后用直裂钻将根尖作一斜面,接着在这一斜面上用331/2号倒椎钻制成盒形洞用汞合金严密充填。最后冲洗,清除汞合金碎屑,组织复位缝合。牙科显微镜使术者扩大视野,有利于根尖部预备和封闭。接入的显微电视系统可以
The author reported apical surgery with a dental microscope with a magnification of 7 X and a microscope equipped with a microdisplay camera to allow students to view surgical procedures on the monitor. After local anesthesia, the full thick mucoperiosteal flap is opened to expose the bone. A perforation is easily found near the root tip of the infected tooth. After complete expansion, the apical portion containing the cyst is thoroughly debrided, The apical as a bevel, and then on this slope with 331/2 inverted vertebral drilling holes made of amalgam filled with amalgam. Finally rinse, remove the amalgam debris, tissue suture closure. Dental microscopes enable the surgeon to broaden their horizons and facilitate apical preparation and closure. Access to the micro-television system can be