Figure 4From: The effect of a manual instrumentation technique on five types of premolar root canal geometry assessed by microcomputed tomography and three-dimensional reconstruction Color-coded distance images showing the changes in canal shape during instrumentation. The distance also indicates the amount of dentin removed. The images in the top and bottom row are viewed from buccolingual and mesiodistal directions, respectively. Letters indicate the same teeth as in Figure 1.Back to article page