Do you have a recipe?
Sounds like a good thing to try first
I think Dr. Bork Bork was joking(?!) Low-salt beef jerky is a good choice - if I were to have another child, that's what I would give as a "teething" food. You can also get those mesh feeding whatsits and stuff a slice of frozen apple or pear in - those feel nice on the gums.
Sorry, I always associated arrowroot biscuits with lots of sugar... I've only used it as a thickener and I've only gone as far as primal pie crust with the baking experiments. Would it be possible to cookiefy it without using sugar?
I thought using arrowroot flour to make some form of cookies was a good idea. Perhaps I could use home made apple sauce as a binder/sweetener? Would that work?