If you visit a dentist for the first time, think about how the experience was after your appointment is over. It is never to late too switch if you were not comfortable. Factors like how nice the staff was to you and how clean the office was should all be considered.
Sticky foods are terrible for teeth, but that isn't just sugary gums or candies. In fact, bananas carry a ton of sugar and will stick to your teeth, leading to problems. French fries carry the same hazard, plus they come with unhealthy fats and tons of sodium. Try to avoid both if you can't brush right after eating.