Short "appearing" canine teeth (or any teeth for that matter) can be becasue of a few reasons. First, the tooth crown itself is too short. If this is the case then the only way to make it "bigger" is to have a veneer or crown placed on it. If the tooth appears short becasue of excess gum tissue, then the gum tissue can be removed with a laser or in my practice an Ellman Surgitron Radiowave device. The Ellman is much more precise than laser and causes less surrounding tissue damage. A Soft tissue laser can be used in most instances though. The Ellman is a much more expensive machine and most practitioners will not have it, it is more versitile for many different surgical procedures. The last reason your canine teeth may appear short is becasue of excess bone and gum tissue. If this is the case then bone will need to be removed carefully around the crown in addition to soft tissue. This can't be done with laser or radiofrquency alone. Have a consultation with a board certified oral and maxillofaical surgeon to find out your individual needs