I was told by my dentist...

At your risk. This is not a medical advice. It is my humble interpretation of what my dentist told me, described in my own words.

I was told by my dentist, that after eating a honey sesame bar, that I should wait a little for my mouth to clean up by fresh water, before brushing teeth. A similar process  is used after drinking water with lemon.

Sugar is converted to acid so it is not wise to brush teeth while sugar remains are on the teeth as the process becomes like brushing with an acid which would deteriorate the outer surface of the teeth.

So what I do is waiting a little bit until I feel that teeth feel clean with my tongue and then I brush. I use sea water but this is something I decided myself , not discussing it with my dentist, see previous posts. 

Something else I discussed today with my dentist is how clean teeth feel after eating an apple.