These objects were hand sculpted and painted for a dragon bust I made some time back. They are not super highly detailed, but it works great for characters. There are 27 teeth/spikes in total.
The objects share 3 2k textures between them, color, normal and specular. 15 of the teeth are UV-unwrapped to be more detailed than the rest. These 15 also has one extra subdivision level of multiresolution. If you for some reason want the original 8k textures for these teeth (they don't add much detail, and are pretty overkill), you can download them here
Made for rendering in cycles, but should easily work in internal with a bit of modifying.