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Jinks早在1962年曾提出,对乳磨牙可以从(牙合)面向远中面制备隧道行充填的方法。近年来,由于牙科材料不断改进及引进一些新型材料,又激起了隧道型备洞的兴趣。经过临床实践,认为ketac-Silver(玻璃离子银合金陶瓷粘固粉)是隧道洞形的理想充填材。隧道制备可保留牙的边缘嵴,能最小限度地损伤健康牙体组织,比传统的Ⅱ类洞修复法更节省时间。洞形制备及充填方法主要为1.根据(牙合)翼X线片估计病损范围,按病损范围选择大小合适的圆钻并确定切割角度2.先用水冷却高速钻制备(牙合)面进口3.邻面插入成形片保护邻牙4.从(牙合)面贯穿轴面制备隧道并去除和质、牙本质龋坏5.清洗制备好的牙面和隧道中的沾
As early as 1962, Jinks proposed that the method of filling the tunnel with the premolars should be done from the occlusal surface to the distal surface. In recent years, due to the continuous improvement of dental materials and the introduction of some new materials, they have also aroused the interest of tunnel-type holes. After clinical practice, that ketac-Silver (glass ion-silver alloy ceramic cement powder) tunnel tunnel ideal filler. The tunnel preparation preserves the ridge of the tooth and minimizes damage to healthy tooth tissue, saving time compared to traditional Class II cave repair. Hole preparation and filling methods are mainly 1. According to (occlusal) wing X-ray film to estimate the lesion range, select the appropriate size of the round diamond and determine the cutting angle by the lesion 2. The first water-cooled high-speed drilling preparation (occlusal) Surface import 3. Adjacent surface insert into the shape of the protection of the adjacent teeth 4. From the (occlusal) surface through the axial preparation of the tunnel and remove the quality and dentine caries 5. Clean the prepared tooth surface and the tunnel dip