The labial surface of the lower canine has a very prominent cervical area, so angulation of the bur gets a little confusing at first. However if you know its long axis, it is very easy to get hold of the angulation easier.

Step by Step

Step 1: Placing the depth grooves

Same as we did with the upper canine, the labial surface has a biplanar reduction: gingival and incisal. To determine the angulation of the gingival 2/3 of the crown, place the bur on the labial surface, making sure that the tip DOES NOT directly point towards the gingival/cervical constriction. Place it in a way that the middle portion of the bur touches the height of contour of the labial surface and the angle parallels more so with the long axis.

Do not worry if the depth groove extends all the way to the incisal. This is normal because considering that the labial area is to bulky and you need to place a considerable depth groove here.

The incisal 1/3 angulation has a different angulation from the gingival 2/3. The tip of the bur stands slightly away from the surface. Imagine the tooth structure that needs to go away. Or you may refer the contralateral canine.

Step 2: Connecting the Depth Grooves

Now time to connect the grooves. Remember to connect two grooves at a time while maintaining the bur angulation. When connecting, do not reduce on the get go because you may cut the depth groove more deeply and we do not want that. So, thin out the middle structure first and until if you are confident enough, then you can connect both of the depth grooves.