Dog and cat teeth with pulp exposure require treatment. This post has a link to my YouTube video explaining why this is so and what the treatment options are.
Lots of dogs love to chew. Lots of owners love to give their dogs durable toys to chew. Lots of vendors love to sell these items. The problem is that these hard toys are very damaging to teeth and cause a lot of pain, suffering and expense. Observe the Knee Cap Rule