Couple of things, no names or personal identification here please. If you can be that personal in the post, you should have been that personal to go to the tournament director and filed an appropriate complaint. Not trying to ruffle feathers just trying to prevent likely problems that could arise.

Secondly, regarding teeth marks, I have learned this lesson by observation this year. Nigel is correct, just try, hard arm pressure across the face with an open mouth, you will leave teeth marks, upper and bottom. I am not implying this about this incident because I didn't see it, but I have in the past also observed wrestlers who have bitten themselves. An official needs to see the bite or have strong evidence, such as a yell at the time of a bite before making the call. Otherwise, you might be penalizing an aggressive wrestler, much different than a "dirty" wrestler as being dirty. There are brutal components of the sport that hurt, a hard cross face, an aggressive take down, a knee to the bottom to break down a wrestler, to bury the chin or place the head in a temple to help secure a pin, and I could go on an on. All techniques that hurt like heck, but are definitely within the rules.