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我科自1985年以来,以减少拔牙,争取保存和修复残冠、纵裂牙等为基点,对磨牙龋蚀范围较大、磨牙牙冠纵裂或者隐裂等病牙,临床上难以用自身回位或加钉固应,我们利用金属带环给予固位,嵌补汞合金修复,恢复原自体牙基本形态和咀嚼功能,获得了满意效果。一、适应症 1.上颌或下颌磨牙牙冠龋蚀范围较大,颊尖或舌腭侧尖缺损较严重者,用自身固化修复困难之患牙;2.磨牙牙冠各种方向的斜裂;3.磨牙牙冠近远中向的双端全纵裂或单端纵裂、隐裂,4.磨牙牙冠颊舌向或颊腭向横裂者,5.牙根较
Our department since 1985, to reduce the extraction of teeth, for the preservation and repair of the crown, the longitudinal crack teeth as the basis, the larger scope of molar caries, molars crowned or split cracked teeth and other teeth, clinically difficult to use their own Reposition or nailing should be fixed, we use the metal strip ring to give retention, amalgam fill amalgam restoration, restoration of the original self-tooth basic form and chewing function, obtained satisfactory results. First, the indications 1. The maxillary or mandibular molar coronal cavities larger scope, cheek tip or tongue palatal tip more serious defects, with their own curing difficult to repair the teeth; 2. Molar crown in all directions of the oblique crack ; 3. Molar crowns near and far in the double-ended full-length or single-ended longitudinal split, cracked, 4. Molar crown or cheek to palate transverse rupture, 5. Root more