Not everyone is the same. My teeth and gums are not that good and I definitely feel much better brushing them after every meal (though I'm aware I should wait after acidic food).
(time-wise, I started increasing brushing after the situation got worse. The root cause for the worsening was not seeing a dentist for two years. Don't do that, definitely see a dentist periodically. And the dentist seems happy with my brushing decision, need to do as much as I can to prevent plaque formation)
For airplanes, I buy three small bottles of water before flight (15hr flight). And I use that for drinking, rinsing and washing my toothbrush. While we cannot bring bottled water from outside the airport to the embarking area, there are usually shops in that area that sell small bottles.
If I'm taking an 8 hour flight after hours at the airport, transit, etc. and am already using the plane bathroom for physiological reasons, I don't mind a quick brush with bottled water...
(time-wise, I started increasing brushing after the situation got worse. The root cause for the worsening was not seeing a dentist for two years. Don't do that, definitely see a dentist periodically. And the dentist seems happy with my brushing decision, need to do as much as I can to prevent plaque formation)
For airplanes, I buy three small bottles of water before flight (15hr flight). And I use that for drinking, rinsing and washing my toothbrush. While we cannot bring bottled water from outside the airport to the embarking area, there are usually shops in that area that sell small bottles.