Interesting... I thought this was just a Swedish thing. There is national healthcare coverage here in Sweden, but it doesn't cover dental once you're an adult.
I am American and went to the dentist here in Sweden. My dentist in America wanted me to go every 4 months, but I still went for my usual 6 month checkups. By the time I went to the dentist here in Sweden it was probably more like 2 years since my last cleaning. The hygienist did X-rays and a very brief cleaning. I never saw the dentist and she told me that I definitely do not need to come in more than once or twice a year. I never had a real cavity problem in the US, but I did have a lot of buildup that took a lot of time to scrape, particularly in certain areas. I don't see how they could make that part up... And my mother, her friends, and my boyfriend all went to the same dentist and were not all told to come in every 4 months, and such. Maybe that is because they knew that we know each other?
Boy, we all sound so skeptical now but I am concerned about being ripped off so they can make a buck. I grew up with my grandfather as my dentist and was only exposed to the yuppie dentists I came to know after he retired. I'll tell you what though. I left the Swedish dentist with no clean feeling at all. I love that super clean feeling you get after a good cleaning! I am still dying for a proper cleaning. Also, my boyfriend has some kind of ammonia breath that I know is his teeth. He's got a visible spot of rot, went into them to have it checked and was told that it's no problem and to go home... What the heck is that?