Sophistry, the whole thread. Most dentists will not recommend brushing more than twice a day. Some will say three times. A 3 ounce tube of toothpaste is more than adequate to meet that need, even on multi-day trips.

If your prescription toothpaste is that much of a major concern to you, then pack it in your checked luggage. You can transport 4 gallons of it there if you like, the TSO’s wont care. But don’t tell me that your 7 ounce tube of toothpaste is a medical necessity during your flight. Sophistry is the most polite response you are likely to get.