I'm 52 and have never had a dental problem or filling - dentist says my teeth are in excellent condition.
Here was my diet as a child.;
Weekdays:
Breakfast, cereal with spoonfuls of sugar added on top,which formed a sweet slush in the milk that I ate once all the cereal was gone.
Chocolate covered biscuit at break time ( and packet of crisps)
school dinner, with sugary pudding.
After school - Biscuits from our ' help yourself biscuit barrel' at home.
Pudding after dinner
Supper of yet more cereal with sugar.
Weekends meant a cake from the cake shop after mum did the shopping, pudding after lunch and tea time was cakes followed by bags of pick n mix sweet whilst we watched the tele.
Drinks were full sugar squash.
Also had pocket money which went on sweets and additional sweets and treats at special occasions obviously, like holidays or Birthdays, easter etc.
Still got excellent teeth. Dad was very strict about teeth brushing too including those tablets that made you teeth go purple .