Join Date: Mar 2006
Location: Beautiful Pacific NW
All I know is my Tristan has broken 3-4 teeth now, chewing on things.
If your dog is a very strong chewer like he is, it can happen.
We used antlers and nylabones and he'd just go to town on them.
I don't buy nylabones now unless i can make a slight mark with my thumbnail in them.
I use Earth Ball toys (planet dog). Kongs that you stick their meals or treats in work too.