Do you think genes and childhood have a part to play? I have always had bad teeth and for last 40 years I've brushed my teeth at least 3 times a day, they've improved in last 10 years and I've done nothing different except start HRT. My husband didn't have a toothbrush until he was 7, never brushed his teeth regularly until we got married (37 years ago) He lived on a farm and drank gallons of milk, his Mum couldn't afford sweeties often - he has less than 5 fillings and never had a tooth removed!
Our 2 sons have 3 fillings between them but I put that down to good aural hygiene with a good school dentist. I can't remember if they had fluoride drops? Do you think those drops helped at all?