Can I just scrape off the brown spots on my front teeth with a pin as there is no other way to remove them permanently? (Photo)

I have these brown spots on the front of my teeth and even the dentist doesn't exactly know why I have them since I'm regularly brushing and flossing and whenever the dentist cleans it it comes bak after a while. I heard that getting ur teeth cleaned regularly by the dentist does not damage ur tooth enamel so can I get a pin and scrape a bit off? Like whenever I do light scraping myself with a pin i can see the spots disappear easily.