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近年来,电子显微镜广泛应用于牙体修复的基础研究。本文用电子显微镜观察窝洞制备或根管扩大时,在牙本质面上附着的牙本质削片层,并探讨其临床意义。一、削片层(Smeared layer)产生的方式 1.窝洞制备的削片层:在使用气涡轮机和电机进行切削制备窝洞时,尽管切削工具种类不同,但在切削的牙本质面上都形成削片层。尤其是在切削断面上,可见削片呈栓状塞入牙本质小管口内,称为牙本质削片栓
In recent years, electron microscopy is widely used in the basic research of dental restoration. In this paper, we observed the clinical significance of dentin slices attached to the dentin surface by electron microscopy when making cavities or expanding root canal. First, the slice layer (Smeared layer) generated by 1. Cave prepared slice layer: In the use of gas turbines and motors for cutting the preparation of cavities, despite the different types of cutting tools, but in the cutting dentin surface Form a chip layer. Especially in the cutting cross-section, we can see that the chip is plug-shaped plug into the dentinal orifice, called dentin shaving plug