Thanks for pointing that out. I know a lot of small sizes are available in the US but the selection of brands is not as great in Canada. That being said, I see the Sensodyne travel toothpaste I have, bought in Raleigh, is .8 oz. I thought it was larger. Since my partner insists on checking luggage, he can carry the larger tube and I'll have the small one for in-transit and if his bag gets lost.

What all this kerfuffel has achieved is to make me rethink everything and look for even smaller/lighter alternatives. Now that liquids are allowed on board, I'm going to shift to only carry-on in order to limit what I travel with since my back doesn't do well when I have lots to handle (even pulling/pushing my suitcase hurts.)

And thanks to people sharing ideas, I even know how to refill toothpaste should I ever had the patience. (Not that I'm convinced I'd use whatever patience I have for that - I prefer to save it for dealing with the frustrations of security checkpoints!)