Probably; all I know is that my dentist always tells me I should brush after all meals. However that is probably assuming the standard "3 meals a day" instead of the modern American "continuous meal throughout the day, with occasional breaks for breathing".
Modern advice is to brush before eating. You clean the teeth so stuff doesn't stick to them. Brushing after eating brushes when your teeth are being attacked by acid.
> Brush your teeth for at least two minutes in the morning before breakfast and last thing at night before you go to bed.
> Never brush your teeth straight after a meal as it can damage your teeth, especially if you've had fruit, fizzy drinks, wine or any other food that contains acid.
> This is because tooth enamel is softened by the acid and can be worn away by brushing. Instead, wait an hour after a meal before brushing your teeth to give your saliva chance to neutralise the acid.
Obviously, I'm not a dentist and nothing I say is meant to replace anything an actual dentist tells you.
Yep. Over-brushing can cause your gums to inflame and retreat, lowering the gum line. There is also no fix to this problem short of surgery. Wish I had known that when I was younger.
The only damage that I've ever read about re: over-brushing has been enamel damage caused by abrasives in toothpaste. The bristles of the brush should be much softer than enamel.
I had this problem for ages, in the end, the actual problem was gastrits. Any gastric problem has that same simptom, so if it persists, go check for them.
I don't doubt you, but that might also have been advice for after the filling perhaps? The stuff they fill it with is not nearly as hard as the stuff on the outside of your teeth (which is pretty damn hard). So a filling will always be a weak spot.