Fossil and Artifact Forum

On a recent hunt I came across a fragment of a tooth. Normally I don't get too excited about fragments but this one has been a bit of a splinter in my mind. As you can see it has serrations and I am under the assumption that it was at one point a part of a great white (or something similar). I'm more interested in how big this tooth may have been if it were found intact. Obviously it is the edge of a tooth but I'm wondering if there is a way of telling from what part of the edge it is (upper, lower, middle, is it over half of the tooth edge, is it only 10%). I can't seem to find any telling curves or lines that could help me out. When you look at the tooth from the side, the angle starting from the edge is quite steep with no sign of tapering off which leads me to believe this was quite a sizable tooth. This may be wishful thinking (but only so much I suppose as it is only a fragment of a tooth) but does anyone have any input?